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Yesterday I was taking photos using Live View engaged and noticed a few shots with an aperture of less than F5.6 vignetting on one side. So today I did some testing using various lens and various apertures, findings were somewhat interesting.
When taking a photo with a Canon EF lens ( 180mm Macro, 135 SF, 85 L and 50 1.0L) this glitch did not appear whether live view engaged or not. Photos were fine both ways.
But with an Alternate lens (Angenieux 180mm, Nikon 135 DC, and Leica 180mm) on and aperture set to less than 5.6 and live view engaged vignetting appeared badly on one side. But if I disengaged live view before taking the shot, the picture turned out fine. If aperture was F5.6 or higher no vignetting..
See samples below right shot is with Live View engaged. No post processing done on the shots except resizing.
Nikon
http://www.robert-chisholm.com/fred_miranda/live_nik.jpg
Angeniex
http://www.robert-chisholm.com/fred_miranda/live_ang.jpg
I had 3 different 5D MKII's I tried this on and they all produced the same results. Live View on the 5D's was set to stills only. Curious if others have tried shooting with Live view engaged and alternate lens attached or have tried video with an alternate and aperture less than F5.6.
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