Quote Originally Posted by HDNitehawk
Which one of those do I need though? The $358 one or the $1027 one. I need help....maybe not the kind of help I can find here.

Help, indeed. [:P]


I have the -3 ($600) version. Bryan seems to use the -4 version of this same chart for his ISO 12233 crops, and the smaller ones for the long focal length lenses (at 500mm, you need to be ~30' from the -3 chart to fill the frame). The -3 chart can just barely fill the frame of the 16-35mm at 16mm and minimum focal distance (a bit less than the spec of 11"). Any wider and the -4 chart would be required. They come from Applied Image as a rolled-up printout, I had mine flat-mounted at an art framing place.