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Re: FM Review: Voigtlander 50mm f/2 APO-Lanthar


DaveFP wrote:
DaveFP wrote:
Anyone know offhand where diffraction starts on the A7R4 ?


realVivek wrote:
You should do well at f/2.8. No need to stop down further.



Petegh wrote:
DaveFP wrote:
Anyone know offhand where diffraction starts on the A7R4 ?


It starts at f4 for the blue spectrum, f5.6 for the green, and all three by f8.


Thanks; so fairly typical. When possible I try to stay on the wide side of 5.6 for landscape.







Hi Dave,

I would say that there will probably not be that much loss at f5.6 or f8. It comes down to focal length, how much DOF that you need/want, corner sharpness, and how much you are willing to lose by stopping down more. For myself, and I only have 35MP and 42MP Sony bodies is use what you need for DOF and accept any loss of sharpness and if you need smaller apertures for DOF and for corner sharpness, shoot away and don't worry. I normally try to stay away from stopping down to the minimum aperture or 1 more stop down for shooting my landscape images.

Rich




Sep 23, 2021 at 07:16 AM





  Previous versions of naturephoto1's message #15716210 « Voigtlander 50mm f/2 APO-Lanthar Review »

 




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