Technical Discussions
I started this series to simply demonstrate a well-known fact; that contrast detection autofocus in Live View was more accurate than standard Phase Detection autofocus for still subjects. It ended up being a bit more than I’d bargained for just with the Canon cameras. After that series was done, I promised several people that I […]
Lenses and Optics
I while back I put out a notice that the Sigma 150mm and 180mm OS Macros had an issue if you shot JPGs on a Canon 5D Mk III and left peripheral illumination correction on. The camera auto-corrected for vignetting that wasn’t there, leaving an interesting pattern with a dark center and lightened edges and […]
How To's
One thing we preach here a lot is that just because a dropped lens looks fine on the outside doesn’t mean it is fine. The other thing we preach a lot is that a tiny difference in the centering, tilt or placement of a single element can have a dramatic effect on image quality. Aaron made […]
Technical Discussions
Some days it’s good to be a geeky gear-head. This is one of them because a) I finished testing autofocus on all of the Canon camera bodies we had, b) I actually found out some interesting stuff, and c) I got worked up about camera marketers while doing it, so I have my next post […]
Technical Discussions
Sometimes I get to write cool, new stuff. Sometimes there’s just grunt work to be done, usually of my own making. This is one of those times. To bring you up to date if you’ve landed here first, this is how I got here. Autofocus Reality Part 1 showed that on center-point, single-shot autofocus, […]
