Is it possible that at the moment of the shot, some part of the tree, that had been blocking the direct sun, just moved slightly but enough to let the direct sun's rays land on the edge of the lens - a breeze moved the tree branch , for instance?
The grid pattern reminds me of some demosaicing issues I read about with some poorer converter versions. If you process with a different raw converter are the grids as pronounced??
AJSJones wrote:
Is it possible that at the moment of the shot, some part of the tree, that had been blocking the direct sun, just moved slightly but enough to let the direct sun's rays land on the edge of the lens - a breeze moved the tree branch , for instance?
Not likely...
The grid pattern reminds me of some demosaicing issues I read about with some poorer converter versions. If you process with a different raw converter are the grids as pronounced??
The grid pattern shows up in both LR and DPP.
Other than that, how big was the joint?
Why is it that us Dutch folks are always associated with joints
We also got cheese, dykes, polders, lots of water, wooden shoes, Heineken and blond girls you know
I don't think you can choose the algorithm with ACR/LR . But you can try to use "dcraw" as an experiment. I think there are several GUIs available, including "Rawtherapee" if you use Windows or Linux:
I don't think you can choose the algorithm with ACR/LR . But you can try to use "dcraw" as an experiment. I think there are several GUIs available, including "Rawtherapee" if you use Windows or Linux:
We had the answer early on but ignored it. Were you thinking a sudden flash of light was something supernatural? A freak arc inside your camera that somehow did no damage? Let's all get off our keesters and take some pics outside!
corndog wrote:
We had the answer early on but ignored it. Were you thinking a sudden flash of light was something supernatural? A freak arc inside your camera that somehow did no damage? Let's all get off our keesters and take some pics outside!
Sky didn't move. Flare wasn't visible in the VF... only when releasing the shutter. Which can happen I guess... But this wasn't the main issue... The main issue was the grid like pattern which I thought was caused by the flare. But it seems to have been caused by the reaction of the RAW converter (demosaicing algorythms) to the flare. But all of this would have been obvious by now if you would have actually read the thread
I did read the thread, all I saw was a bunch of people over analyzing flare. Is this repeatable? Are you concerned about an anomaly? And I did what you asked your first post, I offered my thoughts. Every camera I've owned(which is at least a dozen between Canon and Nikon), has done something weird at one time or another. If it's repeatable or frequent, then start investigating, otherwise make a mental note and keep shooting. I suspect you'll never really know what this is unless you can have one of the Canon engineers look at it.
It could be exactly what the OP is experiencing. We'll find out if he can try using one of the other algorithms to see if the processed image (de-Bayer'd) looks better or different.
- slrl0ver
corndog wrote:
I did read the thread, all I saw was a bunch of people over analyzing flare. Is this repeatable? Are you concerned about an anomaly? And I did what you asked your first post, I offered my thoughts. Every camera I've owned(which is at least a dozen between Canon and Nikon), has done something weird at one time or another. If it's repeatable or frequent, then start investigating, otherwise make a mental note and keep shooting. I suspect you'll never really know what this is unless you can have one of the Canon engineers look at it.
I read it...it looks like over analyzing flare. Did you look at the photo they're trying to fix in that link? Yeah, let's work on the strange artifacts, because then the photo will be amazing.
I don't think anyone is forcing you to read or post if you don't want to. Some of us want answers to our questions and I'm curious to see if we can resolve the OP's problem.
Looks to me like when the mirror started up it caught an image of the sun, previously outside of the frame but included in the lens' projected circular image, and reflected it into the viewfinder (hence the flash) and the reflection of the sun off the bottom of the pentaprism then traced the arc-shaped flare onto the sensor through the 50% transmissive mirror. Just a guess, but it's the best explanation I can come up with. All the angles would have to be just right (wrong?) for this to happen, so my guess is that you'll likely never see it again.
