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Canon EF 28-135 mm f/3.5-5.6 IS USM

22 September 2007
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Arkadiusz Olech

4. Image resolution

The Canon’s verifocal lens, whose focal length changes at a 4.8x factor, performs very well in this category. Its performance at the 28 to 50 mm is simply great! Even with an open aperture the results are very high and a slight stopping down of the lens gives a result of almost 40lpmm. Slightly weaker results can be observed at the 85-135 mm range, but the results are still satisfactory. In summary, the Canon’s operation is smooth and beautiful throughout the whole focal length range.

Canon EF 28-135 mm f/3.5-5.6 IS USM - Image resolution


At the edge of the frame, the Canon takes advantage of its full frame optical design. Although, honestly speaking, the results from this perspective are not extraordinary. The commonly regarded good level, 30lpmm, is exceeded here in many focal length/diaphragms combinations. This is good news for those who want to use this lens with the APS-C detector. However, in the case of APS-H and FF the results are weaker.


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Canon EF 28-135 mm f/3.5-5.6 IS USM - Image resolution


The test table clipping below shows us the highest performance of the lens at its maximum presentation when working with JPG files.

Canon EF 28-135 mm f/3.5-5.6 IS USM - Image resolution



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