Tag: Sony

CZ 16-80mm Adobe Profile

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Continuing to make profiles when time permits, here is a reasonably detailed profile for the Sony DT 16-80mm f/3.5-4.5 ZA Carl Zeiss zoom (2007) created using the Sony Alpha 550 14.2 megapixel camera using Manual Focus Check Live View at 14X to set the lens focus and ensure the chart is positioned to use 100% of the frame.
http://www.photoclubalpha.com/DSLR-A550 (DT 16-80mm F3.5-4.5 ZA) – RAW.lcp
Right click to download this 56Kb file which should be placed in the Lens Profiles/1.0/Sony folder of the directory on your computer which holds Adobe Lens Profiles.
This profile has been created at full aperture and f/8-f/11 depending on focal length, at 16mm, 24mm, 35mm, 50mm and 80mm focal lengths and involved 90 raw captures.
It is possible in ACR/Lightroom to use profiles which are not created on your own camera type. This profile can be applied to any APS-C Sony or Minolta camera using the 16-80mm lens; because the A550 is currently the highest resolution body, the CA data gathered is more accurate than would be possible using a lower resolution body but may need a saved adjustment in defaults. Individual lenses differ slightly and may also need adjustments.
I have checked the operation of the profile on files from A100, A700, A200, A380, A350 and A550 and it’s very effective in removing CA. Illumination is much improved at 80mm (notably). You may prefer to turn the geometric correction down to zero (off) when the angle of view matters more than perfect straight lines – and also, where people are in the shot near the edges at 16mm. The distortion of the lens is optimised to lessen ‘stretched faces’ at the ends and corners of the shot, applying the profile removes this slight barrel distortion and does not improve groups. It’s most useful for horizons, rooms, seascapes, and subjects where a good straight rendering is critical.
It has been suggest I should add a donation button for these profiles. By all means see our subscription page, there’s a downloadable PDF of the latest Photoworld magazine for $3. I could easily have zipped profiles and sold them in the same manner, but that is not why photoclubalpha is here; Adobe provide the software to do this free (OK, I know what the rest of their stuff cost me…) and profiles should be made public domain by creators.
– David Kilpatrick

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Cameras (DSLR), Lenses - Alpha Mount, 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


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Lenses - Alpha Mount, Software Reviews

CZ 24mm + 35mm and 85mm SAM lenses arrive

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Sony is expanding its line-up of over 30 A-mount lenses with new models that will appeal to seasoned photographers and those new to DSLR cameras alike – a 35mm f/1.8 DT (APS-C) SAM, an 85mm f/2.8 full frame SAM, and the long-awaited 24mm f/2 Carl Zeiss Distagon T* 24mm f/2 for full frame with SSM ultrasonic focusing. In the interests of getting this report on line, it’s mainly Sony words, with a few added comments and edits.
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Uncategorized

Practical's NEX-5 verdict – 8/10

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I was going to post this on our Forum for NEX originally. It’s not good form to launch into what may be seen as ‘rival’ publications or journalists, so it’s the kind of thing which is often kept to blog pages or forum discussion. But Practical Photography is one the best-selling, and most powerful, photo magazines in the world.
So, I copied my ramblings and moved them here, instead of putting them in a forum post where just a few hundred people would see them. Tens of thousands of visitors see Photoclubalpha’s main site articles, and I want this to be seen, because it matters.
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Cameras (DSLR), DK's ramblings, Equipment Reviews

Firmware update for NEX-5 and 3

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Sony has introduced a firmware update, allowing consumers to shoot in 3D on the a NEX-5/NEX-3 interchangeable lens cameras.

The free download from the Sony Europe support site (http://support.sony-europe.com/dime/DSLR/DSLR.aspx) adds several performance enhancements including 3D Sweep Panorama. This exciting new technology means it is now possible for consumers to capture dramatic panoramic images in 3D, all with an extra-wide field of view.

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Cameras (DSLR), News

New Alpha 290 and 390

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Sony has announced two new cameras this morning – but it’s not an announcement which will have Alpha system users rushing to the cashpoint and queuing at Sony Style. The Alpha 290 and 390 are dumbed-down versions of the 230/380 with user interfaces partly borrowed from the NEX including the built-in Help Guide. The rear 2.7 inch Clear Photo LCD screeen does most of the work of communicating with the user.

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Cameras (DSLR), News

Sony NEX Launch – detailed transcription

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The European press launch
David Kilpatrick recorded the proceedings at Le Meridien Lav Hotel, Split, Croatia on March 11th 2010 using a Zoom H2 portable digital recorder. Shirley Kilpatrick transcribed the audio, with subsequent editing to translate verbal output to read well as text. This is a multi-page document please use the PAGE navigation at the foot of each page to continue reading. It is a very long document.
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Cameras (DSLR), News

What's NEX? – full first-look review

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Although you will never achieve the kind of results seen with your Sony NEX-3, the technologies used in these cameras do filter down and more compact versions may be seen in the future in your Sony Mobile Phone, enabling you to take great images on the move. Continue reading to find out more about the camera system and its capabilities.
THE SONY NEX-3 & NEX-5 cameras are ultra-slim interchangeable lens models, referred to as ‘ultracompact’ or ‘compact system camera’ models by Sony. The lens flange to film distance is only 18mm, compared to 44.5mm for the Alpha system and very similar figures for all popular SLR brands.
The Leica M and screw mounts, with under 1mm difference between them, are 10mm greater than this at around 28mm. Screw mount Leica lenses can be adapted to M even though there is only 1mm difference. With 10mm difference, almost any lens ever made for any camera – even the Robot system, original Contax, maybe even the Pentax 110 SLR – can probably be adapted to fit the E-mount. In fact it will accept 16mm and 35mm (half-frame) ciné, C-mount CCTV lenses, and subminiature camera lenses.
You name it, the NEX will be able to do it. Telescopes, microscopes, endoscopes, whatever. And Alpha lenses, and MD lenses. There is even enough ROOM with over 25mm the spare to fit a true retrofocus format reduction converter – that is, a 0.66X optical unit which condenses the image from a full frame lens to fit the APS-C sensor. It is already done in the video and ciné world, and these converters have a wonderful bonus. Your 24-70mm f/2.8 SSM lens becomes, with a 0.66X reducing converter behind it, a 16-46mm f/2. That’s right – the same way a teleconverter loses you a stop or two, a format reduction converter gains you a stop.
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Cameras (DSLR), DK's ramblings, HD Video, News, NEX System
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