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Samuli Vahonen wrote:
Main issue in article is that this test was done with lenses, which are mainly designed for film, but you used standard Sony sensor (there was no other mention of camera than it's A7 I, most likely referring to A7 mkI). Standard Sony A7 has thick glass in front of the sensor, much thicker than for example Canon DSLRs. Based on my experience at least these lenses (I don't have as wide collection of 50mm lenses as you have), do suffer from sensor cover glass and are usable for me only at f/8-16 on standard camera:
Carl Zeiss Contax-G Planar 2/45
Carl Zeiss Planar 1.4/50 (AEJ)
Carl Zeiss Planar 1.4/50 ZE
Leica Summicron-R 2/50
Nikon Nikkor AI 1.2/50
Rodenstock Rodagon 2.8/50 (there are variant, my lens says APO-Rodagon-N, I don't know are you referring to same lens).
So I would mention in article that test is showing performance of lens + standard A7, with thick sensor cover glass, which is not part of the optical design of legacy lenses. By doing the Kolari UT (Ultra Thin) modification we can get close to real performance of the lenses.
From article usability point of view, it would be nice if images would link to correspond Flickr image, as now they are scaled to your page width, and there really is no easy way to get to corresponding fullsize image. Now crop images embedded to article are downscaled various amount (faster lenses have more crops, they are scaled down more than slow lenses).
Samuli...Show more →
Samuli,
thank you for your input regarding my articles. You may be right, that the lenses' optimum performance cannot be found by using them on a Sony A7 mkI (yes, that one). On the other hand, I would think that the greatest part of full frame Altglass-users have a Sony A7xxx. At least for them my findings have some relevance. Also I think lenses that do well on the A7 probably do so also on another full frame camera and, since the corners are not that relevant anymore on any crop format.
As far as usability of my articles goes, I agree with you. The problem is, that I don't have many choices being a free user of the services at wordpress (also I am new to writing there and probably don't really know all the options). This much I know: Either I choose "Mosaic" for showing the images. This results in them not being in the right order and without title, but makes it possible to view them at their original size. Or I can put them in order in the middle of the text like I did. Sadly then there is no link to the original images.
So I did the workaround with the images on flickr. I don't thinks it's any hassle, though, because you can view everything that interests you in only four images that you need to download at full size. Your view does get me thinking though, I might still try to change it.
About the Rodagon: It's a plain Rodagon, no N, no APO. You can see all lenses as the header image in my introduction article.
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