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p.6 #8 · p.6 #8 · FM Review: Voigtlander 110mm f/2.5 Macro APO-Lanthar | |
Luvwine wrote:
No, not diagonally. I just posted my centering crops. Again, this was quickly done, but perhaps this will help. I just uploaded 9 crops. Each are labeled. The first one is the upper left corner and I focused on the distant building top with the building top in the corner. Then, without changing focus, I moved the tripod to put the building top in each corner in succession (Lower left, upper right, and lower right). I do this to see if there is any variation in the image in each corner. If not, I figure it is well centered. I repeated this test twice. Then, I did a second test where I focused on the same building top. I focused on center. Then, without changing focus, I put the building top in each corner so five shots total. I just put up 100% crops, 90 quality jpegs with no processing SOOC. Here is the link for your edification if they are useful to you:
http://www.pbase.com/luvwine/cv_110_lens_testing
I also did a cityscape scene from F2.5 to F8 focusing on center first and then on midfield. I also shot the same cityscape with the other lenses to compare. Happy to post more crops if you want or can send you raw files via dropbox. I only did these quickly and once each so I am not willing to disagree with your comment about field curvature as I have had very little time with the lens and I got to my shooting location after work just at sunset.
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Your lens seems to be well centered but to really see the CV 110/2.5's field curvature you must turn your camera diagonally so entire image field is tested. Again, it's not a big deal but for the sake of this review, I'm reporting it.
Many landscape photographers including myself carry the 100-400GM to some locations. It's a superb lens and competes very well against the 110/2.5 and Batis 135. This is not surprising since the zoom has 22 elements and it's very well corrected.
In the crops below you will see the inwards field curvature since I focused both lenses at center. If I had focused the CV 110 on mid-field, the mid and extreme corner crops would be very similar compared to the zoom.
See below, both lenses at f/5.6: (Not much difference at f/4.5 where the zoom is wide open)
PS: Sorry, it was a big hazy today. 

Center @f/5.6

Mid-zone @f/5.6. The zoom does slightly better because it's more flat field than the prime. If I'd focused the CV 110 at mid-field, they would look very similar

Extreme corner @f/5.6: If I'd focused the CV 110 at mid-field, it would do slightly better here
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