Gustav Kiburg has done an extensive test between these two lenses, posted in a Dyxum.com forum thread:
http://www.dyxum.com/dforum/comparision-test-sony-70-400-vsminolta-400mm-f4_topic46212.html
It’s well worth checking out.
– DK
Tag: lens
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Sony 70-400mm vs Minolta 400mm f/4.5
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Sony and Zeiss renew co-operation agreement
OBERKOCHEN/Germany, 15.04.2009.
Carl Zeiss today announced that its Camera Lens Division will extend their successful collaboration with Sony Corporation for a further 5 years. Taking full advantages of their competence both companies agreed to cooperate even closer in developing and commercializing new imaging devices in the future.
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Tamron's new 60mm f/2 1:1 macro
Tamron Co., Ltd (Mr. Morio Ono, President), a comprehensive manufacturer of optical products with its head office in Saitama City, has announced the development of the SP AF60mm F/2.0 Di II LD (IF) MACRO 1:1 (Model G005), a life-size macro lens designed exclusively for digital SLR cameras with APS-C size image sensors* that offers a fast maximum aperture of F/2.0. (Text here is directly from their press announcement).
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Tamron 10-24mm f/3.5-4.5
Tamron’s new ultra wide angle zoom for APS-C/DX is getting a bit of a blasting from reviewers. Now, when I see this happen, I get curious. Lens testing is often badly designed for such zooms, involving test chart targets at distances which are extremely close and result in very bad figures caused mainly by a strong curvature of field (dished, ‘cap’ shape relative to the camera) when gets worse in effect the closer you focus.

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Canon launch full-frame 17mm tilt-shift
Canon today announced the launch of two new tilt and shift lenses, the Ultra-Wide angle
TS-E 17mm f/4L and the TS-E 24mm f/3.5L II, an upgrade to the popular TS-E 24mm f/3.5L.
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Nikon buck price trend with £199 35mm f/1.8
Nikon fans may be surprised that a 35mm f/1.8 has been launched at just £199, when prices are spiralling upwards in the UK. What a perfect lens for the D3, D700 or D3X! But wait – read the small print! Or, read the press release very carefully indeed.
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Japan issues forecast for next 3 years' sales
The Japanese camera and photo product manufacturing association CIPA has issued a press release PDF, containing a table of predicted figures, relating to 2009-2011 projections. Here we reproduce the text and the table (as a JPEG).
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Tamron 10-24mm ƒ3.5-4.5 announced
TAMRON has announced that its new 10-24mm lens will be an ƒ3.5-4.5 design – not an ƒ2.8 as some rumours had it – and will hit the shops in Nikon and Canon mounts first, on September 20th.
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Photokina – a look back, and forward
At the end of September 2006, I set off for a quick visit to photokina in Cologne, having parted company with Icon’s am-pro magazine ƒ2 and not really needing to report on the whole show in detail. Here’s the report I wrote then, with photos, and some thoughts for the 2008 show. (more…)
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Which Sony Alpha kit lens?
This article was originally published in Photoworld magazine April 2008. It discusses the reasons for choosing between the 18-70mm, 16-105mm, 16-80mm, 18-200mm and 18-250mm kit lens choices for the Sony Alpha DSLR system and has been updated as necessary from the original text.
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