Does anyone know why this purple scratch is all of a sudden in all of my photos? I’ve cleaned the sensor and mirrors and nothing is changing. ive cleaned the sensor and mirrors and haven't noticed anything...…..
As Ray says, the easiest option is to try another lens first and see if this removes the issue. It looks like a fibre/contamination to me, rather than a scratch. If this doesn't cure the issue, unfortunately, one cleaning doesn't always remove all contamination and you may need to try again, or even have it cleaned professionally if you cannot shift it yourself. My knowledge lies with projector engines and optics rather than cameras though, so don't take my opinion as gospel.
Any dirt, hairs or threads on the mirror or focus screen are just an annoyance as they won't show up in an image. Any dust, hairs or threads on the sensor will show up as black or dirty marks on the image as they are preventing light from reaching the sensor. They will not show up as a colour. So, what you are seeing is something in the optical path and most likely on the rear element of your lens. Maybe on the front of the lens but I think that is less likely as it is so well defined. You have two lenses. Try using the other one.
Apologies, I stand corrected. On the projectors I work on, lens contamination would never be in focus. I (wrongly) assumed that the camera sensor would be the equivalent of the projector dmd's. Contamination on the dmd is usually the best defined. Here ends my contribution to any further technical threads.
I wasn't correcting you, Paul. I was just providing more information for the OP but it seems like he is not interested.
[QUOTE="I wasn't correcting you, Paul. I was just providing more information for the OP but it seems like he is not interested.[/QUOTE] at least the info didn't go to waste, i found it interesting
No worries Ray, just another case of posting without thinking on my part. I suppose in principal cameras and projectors work in total reverse to each other, so it stands to reason that the contamination would show up at the opposite end of the lens. Obvious if you take more than a second to think it through.
