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tmr4 | profile | all galleries >> Various Tests >> Canon EF50 f/1.2 tests >> Canon EF50mm f/1.2 Backfocus Test >> Focus Tests at Different Distances tree view | thumbnails | slideshow

Focus Tests at Different Distances

Here are a couple of test examining the backfocus shift issue of the 50L. This issue is most pronounced close in, under four feet, and at apertures around f/2 to f/2.8. In my tests the issue appears less apparent with manual focus, though it still exists (see manual focus gallery).
Auto Focus at two, four and six feet - Composite Crops
:: Auto Focus at two, four and six feet - Composite Crops ::
Auto Focus Tests at Three Feet
:: Auto Focus Tests at Three Feet ::
Manual Focus at Three Feet
:: Manual Focus at Three Feet ::