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Joseph Kurkjian | profile | all galleries >> Various Tests >> Autofocus Testing tree view | thumbnails | slideshow

Autofocus Testing

Please note, for the ruler tests, the plane of focus corresponds to 18 inches on the ruler.

For information/suggestions regarding how to perform static AF testing please click on the thumbnail entitled "AF Test Target, Mechanical"; I hope the discussion there clears up any questions in your mind.

IMPORTANT, please note ... whenever you visit a Pbase gallery for the first time, or if you have clicked on a size smaller than "original size" while visiting this or any other Pbase gallery, please be sure to click on "original" size, otherwise you will be presented with a low quality JPEG as versus the high quality JPEG (the size doesn't change, only the quality level of the JPEG compression); you only have to do this once, on the very first picture you look at.

Alternatively, on the very first picture you can add "/original" to the URL in the address bar and hit "refresh" or "go" as the case may be; again, you only have to do this once (on the very first picture). This "/original to the URL" approach is the sure-fire/no-mistake/best way to ensure you will see the highest quality JPEG presentation.
28-135 @ 135mm @ f/5.6
28-135 @ 135mm @ f/5.6
50mm f/1.4, @ f/1.4
50mm f/1.4, @ f/1.4
70-200  f/4L IS @ 100mm @ f/4
70-200 f/4L IS @ 100mm @ f/4
70-200  f/4L IS @ 200mm @ f/4
70-200 f/4L IS @ 200mm @ f/4
100-400L IS @ 400mm, f/5.6
100-400L IS @ 400mm, f/5.6
The Viewfinder View.
The "Viewfinder" View.
AF Test Target, Mechanical
AF Test Target, Mechanical
ai_servo_testing
:: ai_servo_testing ::
100-400L IS vs 70-200 f/4L IS vs 28-135 IS @ f/5.6 (large object distance)
100-400L IS vs 70-200 f/4L IS vs 28-135 IS @ f/5.6 (large object distance)
100-400L IS vs 70-200 f/4L IS vs 28-135 (Big Picture)
100-400L IS vs 70-200 f/4L IS vs 28-135 (Big Picture)
New AF Target (Random Detail)
New AF Target (Random Detail)