Re: Infinity test: CV 50/3.5 vs CV 40/1.2 vs FE 50/1.4 ZA
As there was some sunshine on weekend and I could not resist take few quick test shots at my backyard. Unfortunately my backyard has absolute nothing interesting to shoot.
First I tested flare. I was quite surprised that this lens was flaring while sun was quite far away from frame, and sun did shine in angle to front lens element. Flare was not the typical Sony sensor caused reflection, but smooth and yellowish. It did not seem to matter did I shoot wide open or f/16, flare remained about the same, below comparison shots f/5.6. I assumed very good flare resistance as this lens a) really simple, with very few glass/air surfaces b) supposed to have modern coatings. Old designs typically are quite flare resistance as lens coatings used to be much worse than modern coatings. In practice this will never bother me as this lens is 100% tripod lens due to poor user interface, and I can always use hand or hat to shade the lens. Hood was used but it's so ineffective that it makes absolute no difference.
Sun above the frame, shining to whole front lens element
Same framing and processing, this time using hand to shade the front of the lens from the sun
Unfortunately at my backyard there was nothing to shoot closer than 5m/15feet distance. So I shot this backlit scene with focus on single tree 5m/15feet away, and background trees 10-30m/30-90feet away. I shoot the same scene also with Sigma Art 50mm f/1.4. On focus plane both were identical in sharpness (=both exceeding no-AA-filter 24Mpix sensor resolution) and contrast was as good in both. I hoped for smaller contrast in boke, but to my disappointment boke contrast was identical between these two lenses. Voightländer boke was slightly smoother than Sigma's, mostly due to Voightländer boke highlights having softer edges than Sigma's boke highlights. In addition to calm and smooth boke I was happy to see that boke is not ruined by LoCA caused magenta/green contrast edges. Also good to see that with Kolari v2 camera there seems to be no field curvature issue causing edges/corners to focus more far away than center of image
Will be interesting to learn more about this lens when the spring comes. Specially interesting to see how this lens performs on more interesting 2-3m/6-9feet range, where performance still should be OK even this lens is unit focusing.
Samuli
Mar 04, 2019 at 02:49 PM
Previous versions of Samuli Vahonen's message #14778290 « Infinity test: CV 50/3.5 vs CV 40/1.2 vs FE 50/1.4 ZA »
