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    Crops at 24mm — Upper Left Corner

Top left corner

Corner results are always suspect in the sense that field curvature can make any lens look bad. With real-world 3D shots, the field curvature can help or hinder. Yet sometimes the corners are just weak in general; it can be difficult to be sure without extensive field shooting, or good quality MTF charts to provide hints (not available in this case).

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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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