Junior kendo + strange aperture failure

tpatana

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Tero Patana
Today some 7200 action pics and few hundred posing.

Had strange failure though when using 28-70 for posing. Occasionally the image came really bright. I finally figured it out, it didn't close the aperture blades correctly so those faulty images were shot at F2.0. I did couple test shoots when it was failing, F2 and F8 back to back (same SS and ISO) and pics were identical. EXIF says F8 for the other one though. I wonder if it's the lens or body. Now home trying to repro so then I'll try another lens to see if it repros too. But hasn't failed yet.

One of the pics today

HX9A0018.jpg
  • Canon EOS R5
  • RF70-200mm F2.8 L IS USM
  • 95.0 mm
  • ƒ/2.8
  • 1/500 sec
  • ISO 3200
 

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