Help evaluate my oly 12mm f2

Started 11 months ago | Discussions thread
Paul De Bra
Forum ProPosts: 11,466Gear list
Not ideal evaluation shots.
In reply to markymark101, 11 months ago

Take a flat surface, like a brick wall or office building, head on so the distance to all four corners is the same. Take a picture at f/2, turn the camera upside down and take another picture at f/2. (You may wish to repeat this with smaller aperture, but f/2 is most important here.)

Compare both pictures on the computer (after rotating the second). They should be equally sharp or soft in all corresponding areas of the image. If they are then your lens is fine. If they are not then your lens has a decentering issue and the two images are evidence to supply to Olympus to get the lens repaired.

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Slowly learning to use the Olympus OM-D E-M5.
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Fujifilm FinePix F200EXR Olympus OM-D E-M5 Olympus M.Zuiko Digital ED 9-18mm 1:4.0-5.6 Panasonic Lumix G 20mm F1.7 ASPH Olympus M.Zuiko Digital 45mm 1:1.8 +4 more
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