G Dan Mitchell Photography

Miles Hecker has posted interesting test results in his Canon EOS big guns image quality shootout: As some of you know, I am a landscape photographer. I migrated to full frame digital SLR’s from medium format film. I used to shoot 6×4.5, 6×7 and 6×9 film with the end product being prints of 20″x30″ and larger. [...]

From Night Photography blog by Andy Frazer: More 5D Long Exposure Tests: Seattle-based night photographer Brian Chapman has posted another set of 5D MkII long exposure tests, this time all taken at night. Although this set was taken at ISO 400, underexposed, and then pushed during RAW conversion, the results are very interesting. Brian Chapman’s experiments [...]

Although I’m not an expert on the subjects of sports photography or bird photography (or “BIF,” as aficionados write) using really long lenses, I have had some opportunities to pick up some skills in these areas recently. Since one of my photography contacts recently wrote and asked for some advice about using a longer lens [...]

I have updated my Sharpness and Aperture Selection of Full-Frame DSLRs post to include the corner crops from the same photos used for the center crops that were already there. Here’s the image I added – see the link for full information.

Since the question of how the Canon EF 17-40 f/4 L performs across the frame for landscape photography comes up periodically, I have posted an older test photo I made last year (2007) – updated here to include a comparison corner and center sharpness. Technical data: Canon 5D. Canon EF 17-40mm f/4 L lens. Focal [...]