Looking for test pattern to check focus on 20D

[tony_craig]

Is there a preferred pattern that I might use to see if my camera needs any

adjustments? A colleague suggested a soft focus check.

[bobatkins]

You can try this one -

http://www.bobatkins.com/photography/technical/focus_testing.html

 

Whatever test you use, be aware that the AF zones aren't always completey aligned with the viewfinder markings and may extend slightly outside the indicated area, so make sure that there's nothing around the focus point that the camera could be confused by and that there's only one point or line within the focus area and that line runs across the frame so all parts of it are at the same distance from the camera.

 

You can also try this test - http://www.bobatkins.com/photography/technical/lens_sharpness.html and compare your image sharpness with the examples shown.

[tony_craig]

Precisely what I was looking for. Thanks very much!

[rick_tyrseck]

I've had good luck with this file...print page 18 and use at a 45 degree angle.

[tony_craig]

Thank you. I'll try it too.