ISO 12233 resolution chart

[paul.deitch]

I was thinking of printing out one to test my lenses just for the hell of it. Too expensive to purchase.
How big do you have to print them out and how far away from it should the camera be?

[ExPat2B]

Oh my specialist subject has arrived !

I do a lot of work with long lenses, teleconverters and wildlife, and it is key that I know what aperture, shutter speed and iso I can get away with before sharpness degrades, so I always test any new kit handheld and on a tripod to find out where the limits are. I also use it to fine tune focus using dot tune, and to check any secondhand equipment for decentering.

I have actually just designed in inkscape my own ISO test chart based on the standard chart, but upgraded to be more useful for human reading, better suited to high resolution sensors and lenses, and with a better centre focus target. its a draft document for now, but the basics are there.

https://www.dropbox.com/s/e7mc0u98ykcflly/ISO_1223...

It is designed to be printed across 9 pages of A4 on a standard laser printer, which will allow the centre of the chart to be one sheet of paper, and for the finest graduations to be visible. Use Adobe reader and select the "tile" print option.

Lens Rentals has an article on setting up a test station :

https://www.lensrentals.com/blog/2014/02/setting-u...