Omar Mohammad wrote:
John, if you check the last video I’ve posted, at 1:12 you’ll notice the flare at the same spot more or less as in the photos in the very first post.
This looks like a regular lens flare to me. Actually I think it’s the sun itself that is in shot, it’s just that image circle you’re recording doens't include the sun, but if we imagine the sensor was a little bigger, you’d maybe see the sun in this shot. You’re certainly seeing internal reflections of it on the lens. That’s why it’s a dot and not like a regular flare. I’m also guessing you’re shouting at quite a deep stop of 11 or F16?
I notice too that it moves relative to the little bit of camera wiggle you have in your camera tracking system. That also tells me it’s a flare. If it was a sensor issue it wouldn’t move with a camera bump in the tracking.
I haven’t picked up what lens this actually is, but I presume it’s on the quite wide side of things, and you aren’t using a mattebox or lens hood? This is a hot source (in this case the sun) near but just outside the frame boundary. What focal length is this? Looks like 12-15mm?
This is my guess.
Try shading the lens next time. You can do this with a mattebox or a flag on a stand off-camera. It can be hard on a moving shot though and when it’s wide you tend to see the flag as well, and the shadow it might cast on the ground.
Omar Mohammad wrote:
IR-cut filters are recommended OLPF sensors? Anyway, I don’t think I could fit one for the lens I use.
The IR OLPF recipe in the new 6K is a totally new filter and it’s a little more aggressive than with previous BMD cameras Is this what you’re asking?
JB