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RF100-500 Purple Dot Dead Center

Started 3 months ago | Discussions thread
Abbott Schindler Veteran Member • Posts: 3,099
Re: RF100-500 Purple Dot Dead Center
3

I know I'm late to this party; just had a chance to look at the images and...

I've seen the same thing with my 100-500 on 2 R5's, both with firmware v1.6 and v1.7. So it's probably not the R5's or firmware; could be the lens. I've shot in the same conditions with other lenses and the 100-500 is the only one that does this. There's a visible diffuse purplish circle exactly in the center of the image, and it's always in the same place.

I don't have any filters installed on the lens, but I am shooting through windows; I'm in a darkened room and the subjects are either in shade or nice natural light. The artifact doesn't always show—it happens often when the subjects are near the window AND the natural light is diffuse/cloudy, and it seems to happen only at around 500mm. My orientation to the window (angle, distance) doesn't have an effect, and it's visible for both stills and video. It's also visible in the EVF while I'm shooting. Here are a couple of recent examples:

Notice that the spot is almost the same as OP's: size, location, and color.

I don't see it when shooting exactly the same subject in better light, or when shooting distant subjects through the same windows at the same FL . Here are 2 examples:

Interesting that apparently many people aren't seeing this, and also that it's not a one-off issue.

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