Luvwine Offline Upload & Sell: On
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For me, using a lens with a PCX filter is not worth the hassle. I recently sold my Zeiss ZM 35/1.4 for this reason. I like to have the option of using ND and polarizing filters and the use of PCX filters makes this more challenging. With the loss of the SR app for the A7riii, the use of ND filters is even more important for my shooting. Therefore, for my purposes, I prefer using native mount solutions. Obviously, TAP use is a consideration and may make the inconvenience of using a front filter worth it in many circumstances. All this is to say that I am quite happy with the native mount CV 40/1.2 and would not trade it for a non-native 35/1.7 or 1.4 at this point even though there might be some very slight optical gains (maybe more than slight at MFD). I did like using the ZM 35/1.4 on TAP, by the way, but also found the CV 40/1.2 slightly sharper across the frame at infinity (which surprised me) and that was with the front filter on the ZM.
Another side note, Fred mentioned that the best place for focusing the CV at infinity once stopped down to F4 is at the hard stop. My lens behaves very slightly differently in that at F4 the best infinity focus is still a gnat's hair short of the hard stop. However, at F5.6 and smaller, the hard stop it is.
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