Carl Zeiss Distagon T* 28 mm f/2.0 ZF/ZK/ZE
4. Image resolution
I can honestly say that it would be nice to see such results in every test. The lens’s performance in the center of the frame is extraordinary indeed. Even with the maximum aperture, MTF values reach 37lpmm, which is a very good result. When we stop down the lens, the results are astonishing and with f/4.0 and f/5.6 they reach 47lpmm, which within the error margin, is a record result.
We often see a situation when a wide angle lens performs really well in the center of the frame but shows some weakness at the edge. We can recall our tests of the Canon EF 2.8/28 or Nikkor AF 2.8/24. Fortunately, the Zeiss shows a very good performance at the edge too. Even at the maximum aperture the results are above 30lpmm, which means we receive pictures of very reasonable quality. In the f/2.8 to f/8.0 range, the results oscillate at a high level of 36-38lpmm, so in this category we can say only good things about the Distagon.
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In conclusion, we would like to present the picture clippings of our test chart center received from JPEG files (registered together with RAW files).
