Hi,
I'm desperately missing lens tests measuring MTF10!
All tests as far as I know (Photozone, slrgear, lenstip, dpreview ... please, if you know better, drop me a line) - measure MTF50, which means: resolution.
But for the quality of a lens also the contrast - e.g. MTF10 - is crucial.
In THIS regard Leica lenses shine! Even the old ones.
Photozone/Klaus: Is it possible with your equipment/software to measure MTF10?
(The MTF data-sheets of Zeiss and some old magazine-tests do include both: resolution and contrast.)
Regards
Lars
I was interested in MTF 10 too.
I have found the ISO12233 crops at digital-picture.com very usefull. They talk the full story about contrast and resolution.
E.g. look at http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=757&Camera=453&Sample=0&FLI=4&API=1&LensComp=358&CameraComp=453&SampleComp=0&FLIComp=4&APIComp=0\
[url="http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=757&Camera=453&Sample=0&FLI=4&API=1&LensComp=358&CameraComp=453&SampleComp=0&FLIComp=4&APIComp=0"]ISO12233[/url]
It is clear to see the contrast advantage of Tamron 70-300 VC against Canon 70-300 IS.
However they both have similar resolution.
Greetings,
Miro
Good idea,
I would be interested as well. Especially Leica and Pentax lenses would benefit quite a bit I guess. I think for IQ appearance 10 MTF is as important as 50 MTF.
Regards
genotypewriter
Unregistered
[quote name='Lars' timestamp='1298280700' post='6253']
But for quality of a lens also the contrast - e.g. MTF10 - is crucial.
In THIS regard Leica lenses shine! Even the old ones.
[/quote]
I've usually heard people claiming the opposite... That Japanese lenses are about high contrast and leica/german ones are about all other things aesthetic (e.g. Colours, bokeh, the glow, a warm fuzzy feeling, etc.). I've heard similar in relation to large format lenses too (e.g. The reason for nikkor LF lenses not being all that saught after but 100 year old brass European lenses going at very high prices).
GTW
Thanks Miro,
very useful link.
Usually I check sample images, e.g. on flickr, pbase, lenstip, imaging-resource, ...
Regards
Lars
[quote name='miro' timestamp='1298284699' post='6254']
I was interested in MTF 10 too.
I have found the ISO12233 crops at digital-picture.com very usefull. They talk the full story about contrast and resolution.
E.g. look at http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=757&Camera=453&Sample=0&FLI=4&API=1&LensComp=358&CameraComp=453&SampleComp=0&FLIComp=4&APIComp=0\
[url="http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=757&Camera=453&Sample=0&FLI=4&API=1&LensComp=358&CameraComp=453&SampleComp=0&FLIComp=4&APIComp=0"]ISO12233[/url]
It is clear to see the contrast advantage of Tamron 70-300 VC against Canon 70-300 IS.
However they both have similar resolution.
Greetings,
Miro
[/quote]
