Tag: ACR

Using the 10-18mm OSS zoom on full frame

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The Sony E-mount (not FE) 10-18mm f/5 OSS lens can be used effectively on full frame for creative work and within limits for technically more demanding shots. Below, an uncropped A7R shot of the concourse at Abu Dhabi Airport, taken at 13mm setting, f/6.3 with my lens profile as provided below. Check the straight lines in the floor tiling, if you doubt that this lens would be of any use for architecture.

However, you don’t get this without a lens profile, and without due care to limit the focal length to a range of 13 to 16mm – not the full 10 to 18mm. Below, you could get this if you try 12mm straight out of camera…

uncorrected12mm

This is a pretty awful case of vignetting and distortion – as you would expect. It’s from an APS-C format wide angle zoom, the 10-18mm f/4 SEL OSS lens for NEX, used on the Alpha 7R full frame mirrorless body. Early in the launch period of this camera, various far more attractive images appeared on-line using subjects like roads, rail lines, beaches and even shop counters where the lines look straight – rather like that drainpipe – because of where they fall in the shot. As you can see, anything with a horizon near the long edge of the framewould have given a very different impression.

However, Adobe offers a free utility which enables you to make lens profiles to correct vignetting and distortion.

I created a lens profile for ACR/LR using full frame and the 10-18mm on the A7R. The vignetting is such that the profile creator really can’t handle it, and overcorrects the extreme corners as a result. I’ve done f/4, f/8, f/16 at 12, 14, 16 and 18mm focal lengths using an A2 chart; for a lens like this, a much greater working distance and an A0 chart would really be desirable. The link below is to a zip file of the Adobe Lens Profiles I produced – for A7 and A7R, with .lcpp files for final use, and .lcp files for different settings of the 10 18mm I found useful.

10-18AdobeLensProfiles

corrected-customprofile12mm

At 12mm you can probably see the vignetting artefacts in the corners, the magenta corner shift and incomplete correction of the horizon line. You’ll also be quick to spot that the 12mm coverage has been reduced to something much less, lens profiles always reduce the field of view (they can not do otherwise).

The profiler simply can’t handle the degree of sudden fall-off in illumination given by the 10-18mm used on full frame. Manual distortion corrections can actually do a better job. At other focal lengths, the profile I’ve made works well enough, and if the frame is cropped slightly (still exceeding the APS-C area the lens is designed for) it’s possible to get good results and wider angles.

I have sold my Sigma 12-24mm HSM II which was used with the A99, and also sold a Voigltander 15mm f/4.5 I bought to test (zero cost fortunately, as it made a small profit between Gumtree source and eBay destination). The Sigma was not only very difficult to focus using CD, its HSM motor won’t play with Sony CD.

My .lcp full-frame file can be downloaded from:

//www.photoclubalpha.com/AdobeCameraProfiles/ILCE-7R FF (E 10-18mm F4 OSS) – RAW.lcp.zip

Just for good measure, here is an uncropped A7R 13mm focal length shot of the church of Maila Dumpara in Kerala taken to use dramatic converging verticals – which fail terribly unless the lines are properly corrected, the last thing you want in a strong upward angle is lens distortion. It’s very stiff test of any lens to do this. I have left the vignetting uncorrected. I rather like it. Click either this or the Abu Dhabi photo and you’ll get a larger image, about 1000 x 1500 pixels.

Samples produced for a dPreview forum question

There’s been a lot of discussion on dPreview forums of which lenses work on full frame E-mount, as Sony saw fit to put a Disable APS-C crop option in the menus of the A7 and A7R (almost as if they wanted owners to experiment). They have made other welcome changes of a similar kind which I’ll cover in a full review of the camera – which I can not do yet as I have no FE mount lenses for it, and with the current choice and prices, I can see I may never use FE mount lenses on this camera.

So, to answer some questions on dPreview’s E-mount forum, I posted these images and comments.

Here is a ‘native’ uncorrected shot of a local building taken on the 10-14mm on A7R at 11mm, f/10, ISO 100:

View: original size

Here is the result of using the profile, doing a crop and some straighten of slight rotated tilt, and pulling the scale down (with the profile applied, the roof apex is clipped off at the top as the lens has so much distortion its 11mm probably becomes more like 15mm when corrected):

View: original size

I’ve used some clarity and local burn adjustments on the sky to treat the image more or less as I would (except that I wouldn’t actually photograph this building at this time of day, with blinds drawn, etc).

For me, the 10-18mm on A7R with our without the profile correction offers the same options as using assorted lenses on 5 x 4 sheet film. It never mattered whether a 47mm didn’t cover the entire film, you got an image circle and could use whatever part of it you want. At 10mm the image, with the profile used, has strong corner cut-off but the overall circle of usable image greatly exceeds APS-C provided you stop down (f7.1 seems just OK, f/10 is maybe optimum, I’d certainly try f/16 despite fears of detail loss).

View: original size

The red crop mark is square – my ‘Hasselblad SWC killer’, as the classic SWC had just a 38mm wide angle lens. You needed to get an Arcbody with 35mm Rodenstock to go any wider on 56 x 56mm film (6 x 6). With the A7R and 10-18mm at 10mm, you get the equivalent of a 24mm lens. Not a 24mm fisheye on 6 x 4.5 like the widest ever offered by Mamiya… a 24mm rectilinear on 6 x 6.

The yellow crop mark represents a significantly larger area than APS-C (which is actually just a little under the 24 x 24mm square in width). It is shifted vertically, as if the lens was being used as a shift lens. If only the APS-C area is considered, its approximately 16 x 24mm area can be positioned right to the top of the frame, equalling a 4mm rise, or the equivalent of using a 6mm rise on a full-frame PC lens (most actually go to 11 or 12mm rise). There is only one lens made which can compete with this, and that’s the Canon 17mm f/4 TS. Admittedly this is a superb lens and when stopped down to f/11 and used on the 6D (Canon’s most shift-friendly sensor) will blow this result away for clean rendering of detail toward the frame edges.

And then, you can still use the 10-18mm in APS-C crop mode as a snapshot wide angle with pretty much perfect correction (Adobe’s own Sony profile for APS-C), for videos too.

– David Kilpatrick

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DK's ramblings, Lenses - E mount, NEX System, Photo Techniques, Sony Digital Cameras, Sony Digital Csmeras, Uncategorized

New Lightroom and ACR release candidates

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Beta (release candidate) versions of new Lightroom and Adobe Camera Raw can be downloaded free now from Adobe Labs. You won’t get these updates using the normal search for updates in Adobe apps, as they are not the final release and can not be found on Adobe.com Downloads yet.

Links:

http://labs.adobe.com/technologies/cameraraw7-4/

http://labs.adobe.com/downloads/lightroom4-4.html

These updates will work until April 30th by which time there will be a full release version. For Sony users, the updates provide better lens correction for the RX-1, support for the Hasselbad Lunar (NEX-7 based luxury camera), and lens profiles for the new type Sigma 18-250mm HSM Macro and 180mm prime macro lenses. There are also some improvements to the conversion and controls.

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News, Software Reviews

Using Adobe Bridge/ACR for ‘film looks’ controlled by your Alpha

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It’s now easy enough to find camera profiles – image looks created by independent photographers, as Adobe and Sony do not provide any – which make a big difference to raw processing using Adobe Camera Raw or Lightroom. There are also many fine adjustments you can make within these programs, able to customise the image output so that it either looks just like an in-camera JPEG of a chosen picture style, or like nothing you can produce in-camera.

Many users wonder, sometimes, why their raw pictures viewed in Adobe Bridge look different from in-camera JPEGs. Sometimes they look identical but then after working for a while and fine-tuning your preferences, you see big differences between the two if you shoot RAW+JPEG. This is in addition to differences which can happen if you set the camera to shoot in sRGB (useful for the JPEG) but your computer to save as AdobeRGB (superior in many ways for raw conversions intended to be printed).

In ACR/Bridge, you can choose as a Preference whether to build fast thumbnails or high quality, and whether to build full screen previews or accept whatever is embedded in the file. If you do not set the preference to build high quality previews and thumbs, what you see in the thumbnails is normally an embedded JPEG which is part of the raw file and an exact match to an in-camera JPEG even if you don’t save one of these. What you see in the larger preview pane will depend on your screen size, the camera, and the type of raw but for nearly all modern DSLRs on laptops the basic quality option will show the embedded JPEG and you will even be able to zoom it without interpreting the raw data.

If, on the other hand, you set your Bridge prefs to large size and high quality previews using a large screen such as an iMac 27″, and you have ACR/PS/CS5/Elements installed, Bridge will access the ACR engine behind the scenes and will render your raw files. It creates a ‘cache’ of full screen size JPEG files (which will eventually use a lot of disk space) which exactly reflect the settings for any given camera/ISO default. You have the choice, in Preferences, between having a single Default for each camera or a different Default for every single ISO increment on each camera. If you set the ISO specific Default, the conversion used to build the preview/thumb will be exactly the settings you have saved for that ISO. See below where I repeat this all again for emphasis.

The 100% and full screen fast forward keystrokes

Bridge/ACR will render the full sized 100% view of the raw using saved default settings if you used the Loupe (a small section only) or the very useful sequence of: press space bar = show the full screen preview; mouse-click with the cursor at any point on this to zoom in to 100%; scroll round using controls/mouse; magnify 200%, 400%, or 800% using scroll-wheel or Apple Magic Mouse finger-touch; return to Bridge browsing using space bar. Be warned that even with a fast machine, Bridge builds the sharpness of your enlarged view (normally 100%) in stages.

What you first see may look a bit soft, wait two seconds and it will get sharper, another two seconds and it will be transformed to pixel-perfect rendering. Never judge a Bridge/ACR 100% or loupe view the instant you access it. Bridge/ACR is clever enough for you to be able to go to the magnified view with one shot, and using your arrow keys move to exactly the same position in your other shots at the same view. You can, by this means, compare sharpness in a set of shots. Once each has rendered for that point in the shot, the cache makes sure you can go back and forth between images faster, they do not need to render again.

But it’s Bridge Camera Raw Preferences which hides the great feature I’m telling you about here – a tip which can enable to you use the lower, manual-only set ISO values of some Alpha cameras like the new 77 to ‘load’ different ‘raw’ films just by changing the ISO setting. Or indeed, other camera makes which have similar ISO control.

Different raw conversions can be made specific to exact ISO settings, so that if you select a given setting, its unique conversion will automatically be used and its effect will be shown in the preview and thumbnail created.

This would be a disaster for Auto ISO – but the Alpha 77 has six different ISO settings between 50 and 160 which are NEVER used by Auto ISO, and can safely be used for my tip here. Also, there’s really not a great deal of difference between the noise, sharpness, and dynamic range of ISO setting with this low range. They are all very good.

ISO-specific default magic

So, I have an Alpha 77 with ISO settings 50, 64, 80, 100, 125, 160 all of which are very low noise and good quality. In Bridge/ACR, I can decide that ISO 50 will be used the Vivid camera profile, strong contrast curve, a certain degree of capture sharpening, a certain black point and so on. I can adjust all this until I think that ISO 50 looks just like Velvia film. Then I save the new default.

Taking a frame set to ISO 64, I can make a default which I think looks like Kodachrome 64 perhaps using the Landscape profile. For 80, I might decide to make a fake infra-red process default with added grain, monochrome conversion and contrast effects. For ISO 100, a default which is standard and looks like a good neutral colour slide. For 125, maybe an FP4 in acutance developer printed on G4 paper mono; for 160, a Portrait profile combined with no sharpening, to imitate Vericolor Type S or Fujicolor 160N.

The examples below do not use different ISOs, I have used one raw file to show the differences, of course!

‘Standard’ – this is the colour, contrast and profile used when Adobe Standard is set as ‘Camera Raw Default’ in Bridge on the Alpha 77. This default includes WB As Shot, Exposure as shot (0), no Recovery, no Fill, Black point 5, Brightness 50, Contrast 25, Clarity/Saturation/Vibrance all at 0, Medium tone curve.

This is the same overall conversion, using a profile called ‘Neutral’ designed to be similar to the camera’s Neutral JPEG setting.

This is a profile called ‘Vivid’, again with no other adjustments.

This is an interesting custom profile called ‘Positive Film’ which clearly has some major adjustments.

This is ‘Standard’ (not the Adobe Standard) but with multiple adjustments saved in the Default – Brightness to 75, Clarity to 25, Saturation and Vibrance both to 20, Strong contrast curve. This Default is a custom one which I prefer for many shots where good saturation and midtone brightness is needed. In fact, many Alpha 77 users advise changing the ACR default Brightness from 50 to 75 permanently as the 50 figure used by Adobe appears to make the images flat and dark.

This custom high contrast ‘red filtered’ mono conversion includes strong lens vignetting added (by moving correction sliders to zero) and a greyscale rendering controlled using the Hue/Saturation/Luminance control tab for colour balance. Blue, Aqua and Purple values have been lowered and Red and Orange values raised to imitate a camera filter on panchromatic film.

If you have not found and installed any third-party profiles, you can instead make detailed adjustments including contrast and saturation for much the same effects.

I am fully aware of the ‘well I can do all this in Photoshop‘ response, the point is that all these and other far more complex processes (including any of the raw conversion Presets found in popular styling packages by Marcus Bell, onOne and others) can be effectively assigned to one chosen ISO setting in the ‘protected from Auto’ range 50-160 on the Alpha 77.

Now, when I open my folder of raw of images in Bridge set to create High Quality thumbs and large previews, they can all get exactly my customised process treatment for the thumbnails depending on the ISO I have set. One image might appear with the b/w process above and the next with colour. I will be able to preselect a different Bridge preview and a different startpoint ACR process just by selecting a different ISO on the camera. I can leave ACR’s default settings in place from 200 and up, so I will never get Auto ISO producing strange differences from one frame to the next due to Bridge/ACR presets. Yes, I did once set some different conversions for specific ISOs in the Auto range and it really messed up by image selection – I found I had increased brightness for 320 but not for 400 (etc) so my exposures seemed to go all over the place when Auto ISO chanced to pick small changes from one shot to the next.

You can apply more NR and sharpening control to ISO 200 to 12800 as needed – and again, this will automatically be applied according to the ISO, to the preview and thumb as well as the opened raw for conversion. But it won’t look odd as the exposure, colour and contrast will remain constant.

Pros and cons

If you want to revert to a standard single process for all ISO settings, you’ll lose the customisation of Bridge/ACR but you can save each setting as a Camera Raw Default process (named) and restore the settings at any time. Or, you can just reserve one careful combo for a single ISO setting such as 80 and only set this when the specific result is wanted, leaving every other setting at factory default.

It only applies to one camera body at a time, you would need to set up the same defaults for every different similar body you use – and not all Alpha bodies offer the useful 1/3rd step ISO increments and low ISO range which make the idea practical. But, this is also an advantage, because if you process files from another camera of the same exact model it will be unaffected unless you set it up. Camera Raw Defaults can be set as specific to each serial numbered body, and each different ISO, so there is never any need for someone else’s raw files to be accidentally altered by your own personal setup.

Profiles

I use a set of Alpha profiles I have assembled from as many sources as possible, but mainly from Maurizio Piraccini’s development for every KM/Sony Alpha camera:

http://www.piraccini.net/2011/02/profili-colore-sony-a900-per-adobe-lr.html

These are also linked to via a Photoclubalpha Forum thread:

http://www.photoclubalpha.com/forum/viewtopic.php?f=6&p=66090#p66090

To read a Forum thread about ‘Deep’ profiles (which is mainly about noise levels, not about the image looks themselves, but includes instructions on how to install all similar profiles) go to:

http://www.photoclubalpha.com/forum/viewtopic.php?f=32&t=5786&p=60905

These threads contain links to profiles provided or sourced by Agorabasta as a forum contributor including some for most makes.

If you have any sources for other sets of created profiles, for any Alpha models, please add a Comment at the end of this post, and provide the link (crediting the source or the author if you have that information).

You read it here first – and you’ll never forget how this can be used. Lightroom offers the same functions and preferences. Other programs may follow suit. Now you can use your manual ISO settings for raw files just the same way you can apply picture styles to in-camera JPEGs, and get the results in ACR/Lightroom – no need to be restricted to Sony Image Data Converter to read tags.

– David Kilpatrick

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Cameras (DSLR), DK's ramblings, Photo Techniques

Free download PDF guide to Adobe Camera Raw

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You can open or download an excellent (slightly dated, unrevised since ACR 6.1 but finally translated into English from the original Italian by Francesco Marzoli) guide to all the deeper functions and tricks of efficient workflow using Adobe Bridge, Camera Raw, Lightroom and Photoshop from X-Rite:

http://www.xritephoto.com/Documents/Literature/EN/GuidaCameraRaw_en.pdf

This PDF instruction book obviously mentions the use of X-Rite’s ColorChecker Passport for calibrating cameras, that’s why they have sponsored the guide. But it goes far beyond this to explain with clarity all the controls of ACR, and many tips are given on how to use them best.

As an example, we didn’t know that Bridge could be forced to use Camera Raw without taking over Photoshop – meaning it can be run separately, allowing you to do other work in Photoshop while ACR does file conversion and saving from within Bridge alone.

You can load this guide into your iPad or other reading device. Just SAVE the target file, and ADD to your iTunes Bookstore Library, it will then be readable. For other devices simply save the PDF and transfer.

0
Photo Techniques, Software Reviews

Adobe releases 6.3 and 3.3 raw with 560-580 support

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Raw conversion for the Sony Alpha 560 and 580 models is now available from Adobe. Adobe has released the final ‘cut’ of Lightroom 3.3 and Camera Raw 6.3, along with other improvements on December 7th and a Bridge update which was released a week ago:

Photoshop CS5 12.0.2 update

December 7, 2010
Windows | Macintosh

TWAIN Plug-in update

December 7, 2010

Camera Raw 6.3 update

December 7, 2010
Windows | Macintosh

DNG Converter 6.3 update

December 7, 2010
Windows | Macintosh

Lightroom 3.3 update

December 7, 2010
Windows | Macintosh

Adobe Bridge CS5 4.0.4 Update

November 30, 2010
Windows | Macintosh

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News, Software Reviews

Adobe ACR6.2/LR3.2 Lens Profile – Nikkor AF-S 85mm f/1.4G

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I have been using the new Nikkor AF-s 85mm f/1.4G lens, arrived yesterday. I have produced both raw and JPEG profiles for the lens on the D3X – these can also be used on the D3, D3S and D700 (profiles tend to be fairly portable between bodies, if done on the highest resolution option).

Download link:

http://www.dphotoexpert.com/Resources/NikkorAFS85mmprofiles.zip

Submitted to Adobe. This profile was made at 4m distance, and maps the lens at f/1.4, f/2.8, f/5.6 and f/11.

Very little correction is applied as the lens is already very good, but there is a small adjustment to distortion and vignetting, and some cleaning up of visible CA. It is still a good idea to enable de-fringe as well.

– DK

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software, Uncategorized

ACR 6.2 2010 Process – huge improvement

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Before the launch of the NEX models, the last camera we reviewed here was the Alpha 550. The final review pages dealt with the high ISO performance.
Following the release of Adobe Camera Raw 6.1 and 6.2, the new ’2010 Process’ has replaced the ’2003 Process’ in conversions (you can select either option). The 2010 Process used with manual adjustment of the Noise Reduction controls can produce really exceptional ISO 6400 results.
This changes any previous conclusions about the usefulness of Alpha 550 high ISO settings, and indeed brings them into line with the results we have seen from NEX – which of course defaults to the 2010 process, and can not be processed using earlier Adobe Camera Raw versions.
Here is the old process, top, seen at a reduced scale of a 100% view at ISO 6400:

Click the Process 2003 image above to open the original 100% size screen shot.
Below is the new 2010 process, which is more than just a minor tweak – it’s an entirely different way of getting the data out of the raw file.

Click this image to see the Adobe Process 2010 result full size. All the settings were identical for these two conversions. The improvement is on such a level that ANY test reports on the Alpha 550 produced in 2009 using CS4 and Adobe Camera Raw 5.x are invalid.
The NR can be moderated to produce more detail on the 2010 process midtones at the expense of more visible grain (but it’s nothing like the 2003 pattern – it remains mainly a fine luminance pattern). I have used a setting which produced a clear comparison. Entirely different NR settings are actually better, with the two processes, but no matter how you adjust the ‘2003’ version it never looks anything like as fine as the 2010 one.
Should dPreview and others update their RAW sample images because the old process was so badly matched to the .ARW format? Nothing like the same difference is made for example to Nikon raw files, 2010 is better, but 2003 didn’t mess up the higher ISOs in the way it always did for Minolta/Sony raws.
Please note that if you don’t want to get CS5, you can still get the benefit of this new conversion with Adobe Photoshop Elements 8.
– David Kilpatrick

6
Cameras (DSLR), DK's ramblings, Software Reviews

ACR/LR Profile for A900+MinRS 24-85mm

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Although it’s far from a perfect lens, this small 1999 Minolta RS optic is my favourite for general travel and everyday use on the Alpha 900. It is a convenient size and weight, performs well when stopped down a little, and has exactly the range and minimum focus I need.

Mouseover image to see effect of this profile used on a shot taken at 70mm focal length.
The profile created for ACR6/LR3 is at four focal lengths – 24, 35, 55, 85 – and two apertures, wide open and f/9. The chart distance ranges from about 120cm to about 4m.
To download:
http://www.photoclubalpha.com/DSLR-A900 (24-85mm F3.5-4.5) – RAW.lcp
Right click and save. Correction of CA and distortion is pretty good, and this profile identifies itself correctly as a Minolta lens. It should be placed in the Sony directory of Adobe Application Support>Camera Raw>Lens Profiles.
– David Kilpatrick


2
Lenses - Alpha Mount, Software Reviews

Adobe Camera 5.7/Lightroom 2.7 released

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Adobe today announced the Lightroom 2.7, Photoshop Camera Raw 5.7 and DNG Converter 5.7 Release Candidates, available for immediate download on Adobe Labs. The updates add raw file support for: Canon EOS 550D (Digital Rebel T2i/ EOS Kiss X4 Digital), Kodak Z981, Leaf Aptus-II 8, Leaf Aptus-II 10R, Mamiya DM40, Olympus E-PL1, Panasonic G2, Panasonic G10, Sony A450.
Adobe encourages photographers to try out the newly added raw file support in this update and provide the product team with feedback on the Adobe User to User forum (http://forums.adobe.com).
In addition, photographers can also participate in the Lightroom 3 beta program and try out the new features in Lightroom 3 beta 2 for free. To learn more and download Lightroom 3 beta 2 visit: http://labs.adobe.com/technologies/lightroom3/.

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Cameras (DSLR), News, Software Reviews

Lightroom 3 Beta 2 – the high ISO wunderkind

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I’m not going to bore you with countless 100% clips. Just open this one file. It is a 100% screen shot of a tiled view of the same raw file from a Canon EOS 550D (aka Rebel T2i), taken at ISO 6400.

On the left, you see what Adobe Camera Raw 5.6 does with this file using no sharpening, 25 Luminance NR, 50 colour NR. On the right, you see what LR 3 Beta 2 does using the same settings (LR noise reduction has some further options – these are not adjusted).

When exporting the LR image to Photoshop, a dialog box appears saying you may need to install Adobe Camera Raw version 5.7! At the time of writing, version 5.7 is not yet available. But LR3 Beta 2 knows it exists… I used LR Rendering for this sample.

Click the image, open the full size screen shot. Or view it at
http://www.pbase.com/davidkilpatrick/image/123036282

The 12,800 shot is by no means bad either. You could compare it with ISO 1600 shots from the first 10 megapixel CCDs.

Trust me, the LR 3 Beta2 result is superior both to the Canon in-camera JPEG and the Canon DPP processed result. Had I the time I’d post examples of every ISO from 100 to 12,800 and you would see something very special – the increase in size of ‘grain’ with each speed step, but nothing more. NOTHING more than a proprotional increase in grain size, just like film  used to be.

No oatmeal. No porridge. No hot pixels, no smeary watercolours. No colour blurring and luminance smoothing. Just neat, tight, virginal grain. Hmm. I should not have said that. Even so…

And another things – it works on everything. It works on old files, new files. RAW files from before the Ark got stuck on Ararat. Night shots taken when night shots could only make 7 x 5 inch prints. Nikon, Canon, Sony, old Minolta, Pentax, Olympus – download this beta, and you just discovered great pictures in the stuff you thought was rubbish because you accidentally used ISO 800 when that meant shaking the pepperpot over your soup!

Go download! http://labs.adobe.com/technologies/lightroom3/

Tip: to use Lightroom use a front end, just set Photoshop as your editor, and after adjusting the pic hit Command-E – same as hitting the Open button in Adobe Camera Raw. Go straight to Photoshop, Do Not Pass Go, and do not (yet!) spend £200!

– DK

6
software, Tests / Reviews, Uncategorized
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