Understanding Lens Charts

[phylet]

*CLICK!* (http://www.sigmaphoto.com/_lenses!/popup_mtf.asp?name1=106_big.gif&name2=107_big.gif)

Here we have the lens chart for the sigma 70-200 F2.8

ive got little-to-no idea whats going on, could someone please either explain this to me or provide a link that explains.

thanks.

[Dan Roeder]

Try this:

http://luminous-landscape.com/tutorials/understanding-series/understanding-mtf.shtml

[phylet]

cheers, dan. thats exactly what im looking for.

[Steve Parr]

If I take a photo with a particular lens, and it yields pleasing results, I'll use the lens again. If I take a photo with a lens, and it yields crappy results, I'll not use it again, regardless of who "good" the charts insist it should be...