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Mosaic Aperture Series

This series shows the quality from f/2.8 through f/11.

The quality problem with this sample at f/2.8 is pronounced . Please see the Skew page; this sample apparently has built-in tilt and swing! For a $5800 lens, this is very disappointing.

Sometimes the lens makes a sharp image at f/2.8. But every controlled trial I performed, it could not! It didn’t matter whether I used VR or not, or Live View to focus, or autofocus. The strong skew throws all bets off, yield peculiar results, apparently also confusing the autofocus system, and me too, when I used Live View, where is was difficult to focus.

When I used the Nikon 2X teleconverter on this sample, the results were truly abysmal— garbage.

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Since 2006, Diglloyd Advanced Photography is the authoritative review and reference for DSLRs and their lenses: Canon and Nikon primarily, but also Pentax and some medium format. Reviews of key DSLRs are included, but the primary focus is on lens performance. Also included is a wealth of technique and workflow approaches.

DAP includes thousands of pages of exclusive coverage and high resolution Retina-grade examples detailing Canon and Nikon DSLR bodies and their lenses, with in-depth analysis of sharpness and contrast, color, bokeh, vignetting, distortion, MTF, and flare, behavioral and practical usage.

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