JimBuchanan wrote: BastianK wrote:
Bokeh issues are also resolved with this filter.
Could you elaborate on this comment? From Haruhiko's 2 meter and 4 meter photos, I don't see much difference in field curvature (exists with/without PCX) as the focus sharpens going towards the edges and corners.
Please have a look at these shots from my upcoming 35mm comparison: https://www.flickr.com/photos/140854680@N04/sets/72157680901728016/with/33104186551/
These shots were taken at the most critical conditions regarding the influence of field curvature on bokeh: focus near border, focusing distance ~6 m.
You can choose either pair, FLE, VM or ZM, outcome is always the same, you might see the Loxia 35mm 2.0 as reference, as it only has very minor field curvature.
I will now quote myself from this post:
"It [the front end filter] will help and it is actually the main reason I was initially interested in these front end filter solution.
BUT you may not get the results in the end that you are hoping for.
Most fast rangefinder lenses have severe vignetting (especially compared to the DSLR counterparts)
which will also effect sharpness (more) and blur (less) towards the borders.
Furthermode with the subject (and focus) near the borders (where the field curvature has significant influence)
you may indeed end up with a little more blur towards the borders but in fact less blur in the center of the frame when having mounted such a filter."
Corners/borders would me more out of focus with a 5m PCX filter, but keep in mind the limitations described above, they won't be as blurred as the center, technically impossible.
