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Lens review

2011-09-12
 

Samyang 7.5 mm f/3.5 UMC Fish-eye MFT

4. Image resolution

Most of our Micro 4/3 optics tests have been based on RAW files from the Olympus E-PL1. We chose that body due to the lack of differences between vertical and horizontal MTF50 values and no interference into RAW files. In order to be consistent, in the case of this test we decided to use the E-PL1 as well. It’s worth reminding here that the decency level is placed around 42-45 lpmm. So far the highest result among all brand name optical devices on this sensor was scored by the Leica DG MACRO-ELMARIT 45 mm f/2.8 ASPH. MEGA O.I.S. which, by f/4.0 reached as high as 80 lpmm. The results of Panasonic “pancakes” were a bit worse - the 1.7/20 model brushed against 75 lpmm and the wide angle LUMIX G 14 mm f/2.5 ASPH exceeded slightly 70 lpmm.

Now let’s see how the Samyang 7.5 mm f/3.5 UMC Fish-eye MFT lens compares.

Samyang 7.5 mm f/3.5 UMC Fish-eye MFT - Image resolution


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It’s obvious you don’t have to get verbose here. Already at the maximum relative aperture the lens exceeds the level of 75 lpmm and by f/4.0 it approaches 80 lpmm. What’s more, the edge of the frame looks equally great. At the maximum relative aperture we get the result of over 60 lpmm. I do not hesitate to write that, in the resolution category, it is the best fisheye lens I have tested so far.

The crop below was taken from a photo of our testing chart saved in JPEG format and taken by f/4.0.

Samyang 7.5 mm f/3.5 UMC Fish-eye MFT - Image resolution

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