Canoe50d wrote:
Background... 70d, 7dm2, 5dm3 and now 5dm4. I have several Sigma Art lenses. Sigma 35mm 1.4 art has been used on 70d, 7dm2, and 5dm3 with no issue. Last night using it on the 5dm4 for the first time I snap a photo and get massive Vingnetting. I switch to live view and I see three grey circles (like s target) . I can see through them but.... only one single vingnett shows on the photo. I will add sample photos later when I can. Yes I tried taking off the glare collar, no help. I tried my 50mm and it's fine. Any ideas ???
Background... 70d, 7dm2, 5dm3 and now 5dm4. I have... (
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Do you have any filters on it? If so, try removing the filters.