sebboh wrote: Makten wrote:
Why bother with MF on an AF lens?
cause AF sucks!
Do we really know that already? I don\'t mind AF if it works, but i prefer MF. Though, I\'d never choose an AF lens to do MF.
didn\'t you sell your rx1 because you were getting inconsistent results with AF?
Partly, yes. I think the strange performance of the lens affected AF negatively, but I\'m not sure.
uscmatt99 wrote:
Martin,
If I recall you\'ve used the CV40/2 as well, not sure on what bodies. How would you compare the handling and overall rendering compared to the little Leica/Rokkor 40/2? I\'d planned on the C-Biogon 35/2.8 being my small alternative to the CV 35/1.2, but I\'m guessing I\'ll have to deal with color shift on the Biogon. Maybe this 40/2 could be used as a small alternative. With an adapter, the CV40/2 is chunky enough that it\'s almost worth just using the 35/1.2.
The CV Ultron with adapter is very much larger than the Summicron-C, and the rendering is totally different. While the C is \"classic\" with a lot of spherical aberration and low contrast wide open, and high resolving stopped down, the Ultron is a high contrast lens. It\'s very sharp wide open at moderate distance, but doesn\'t really shine stopped down. Bokeh is \"better\" than with the C, but quite harsh towards the corners. Both are smooth and nice at f/2.8
The Ultron is more or less the same size as the Nokton once you put them on adapters, but of course the Ultron is lighter. But I suppose the Ultron will be less iffy for an all purpose lens.
I\'ve only tried the Biogon-C on M8, where it was simply stellar. Can\'t remember that I ever saw any color shift, but that was long before I was aware of such things. Compared to the FE 35/2.8, I think the Biogon-C has a much nicer rendering from what I\'ve seen.
Toothwalker wrote: naturephoto1 wrote:
I don\'t think that is smearing in the lower corners.
Do you mean that the lower corners are not blurred, or how does the meaning of the term smearing differ from blur or unsharpness?
The \"smearing\" we are refering to here is introduced by the sensor, and it should be linearily worse towards the corners. But that\'s not the case with the Summicron-C, as you can see. Instead there is a rapid drop in resolution an contrast in the very corners of the frame. Something very common and that can be seen in MFT charts, such as this from the ZM 50/2 Planar:
Nov 05, 2013 at 02:23 PM
Previous versions of Makten's message #11913403 « A7/A7r - performance with WA RF lenses »
Do we really know that already? I don\'t mind AF if it works, but i prefer MF. Though, I\'d never choose an AF lens to do MF.
Compared to the FE 35/2.8, I think the Biogon-C has a much nicer rendering from what I\'ve seen. 