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Front-End Filter Improves Corner Smearing
  
 
thrice
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p.77 #1 · p.77 #1 · Front-End Filter Improves Corner Smearing


Yeah. I'm not sure if they will try to further correct the field curvature with the native FE version of this lens but i somehow doubt it.

https://www.lensrentals.com/blog/2014/08/some-m-mount-field-curvatures/

raydeng wrote:
Oh gotcha. So SOME of the field curvature will go away but a lot of it will remain, as it is inherent to the lens?




Apr 27, 2017 at 09:01 AM
HaruhikoT
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p.77 #2 · p.77 #2 · Front-End Filter Improves Corner Smearing


raydeng wrote:
Oh gotcha. So SOME of the field curvature will go away but a lot of it will remain, as it is inherent to the lens?


Yes, that field curvature exaggerated by sensor stack would be fixed by the PCX.
But as @thrice mentioned, even on film the CV35 shows relatively strong inherent field curvature, that will not be corrected by this solution.



Apr 27, 2017 at 02:45 PM
MIRANDA1
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p.77 #3 · p.77 #3 · Front-End Filter Improves Corner Smearing


Finally recieved my PCX 5000PM I thought the Distagon 35ZM was a fine lens even without the filter but with the PCX solution it really brings it to a whole new level especially into the far corners.

Fred, thanks for the guidance on the setup in order to use the OEM hood, I went that route however one thing I did was to cut a couple of notches on the last 55mm filter so I can use a lens spanner to tighen and remove the setup should I need to.



Apr 27, 2017 at 07:20 PM
DavidBM
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p.77 #4 · p.77 #4 · Front-End Filter Improves Corner Smearing


thrice wrote:
Yeah. I'm not sure if they will try to further correct the field curvature with the native FE version of this lens but i somehow doubt it.

https://www.lensrentals.com/blog/2014/08/some-m-mount-field-curvatures/



Do you mean correct it better than the native field curvature?
I doubt that too: the impression given by the CV people who talked about the lens to people visiting the show seemed to be that the FE mount version would correct the stack-induced issues, giving you performance like it would have had on film or a thinner stack..



Apr 28, 2017 at 12:19 PM
raydeng
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p.77 #5 · p.77 #5 · Front-End Filter Improves Corner Smearing


@haruhikoT bought all the parts. Outside of rubber bands, I shouldn't need anything else, right?

I also am interested in trying this on my Canon 50mm f1.4 LTM. If it helped on the Voigylander 50mm f1.5, perhaps it may help on this lens? I guess that means I should get a 48-55 step up too.



Apr 28, 2017 at 08:39 PM
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