Jeffrey’s Autofocus Test Chart

If you suspect that your modern SLR or SLR lens has autofocus problems, you can use a chart like the one offered on this page to perform some tests....Check it out Here

Nikon D70 test chart...Check those focus issues

Although this test was originally devised in response to the back focus issue that manifest in some Nikon D70 cameras, it can be used to check any camera...Full HowTo Here