F11 Vertical Banding - Image Quality Issue
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probably much bigger than that.. the dimensions will be in feets not just inches.. (or metres for those in SI)cse1000 said:
kegler: I agree with you.. I do urge those who have the 'banding problem' to get it 'fixed' at fuji. but first of all.. you have to reproduce the fault to show the engineer... which isn't quite easy. Those that have successfuly replace/repaired your F11 please do tell us what the service centre said.
yanyewkay said:
Not really true. Depending on the amount of banding, sometimes it is visible even on-screen, especially if you do post-processing to the image - sharpening, or gamma correction, digital zoom or cropping. From my experience, it is most visible in black/brown hair or eyes of portrait shots.
The banding makes the camera unusable for people who do image stacking / averaging - a technique used commonly for night sky / long exposure photography to remove noise. Normally, CCD noise is random. So if you take many photos of the same object, then you "add" the photos on top of each other and average them out, the random noise will cancel itself out. However, the banding is NOT random, and stacking the images will make the banding more and more obvious until the picture is unusable.
Image stacking: http://ccdastrophotography.com/article.php?id=5
yanyewkay said:
I have sent my set to Fuji. Had no problems reproducing the problem - just bring along your laptop and show them a sample of the photo, zoom to 100%. The engineers also never questioned the existance of the banding.
At first, they seem to suggest that this is "normal", and asked me to send them evidence of any F11s that do not have the banding. Surprisingly, it was quite difficult to find "good" F11 photos... look at this thread:
http://forums.clubsnap.org/showthread.php?p=1928063
In the end, I found some good samples from a Japanese review site, and the Fuji engineer has just escalated my case to his technical superior. Now awaiting for good news...
Good news (tentative).
Fuji engineers replaced the "lens unit assembly", and took some photos, sending them to me via email to check if they are acceptable. From what I saw, the banding is basically non-existant after the change. I told them I was okay with the results.
Unfortunately, I'm overseas now so I cant collect the camera to see it for myself.
After I collect the camera and play around with it for a while, I'll let you guys know.
Fuji engineers replaced the "lens unit assembly", and took some photos, sending them to me via email to check if they are acceptable. From what I saw, the banding is basically non-existant after the change. I told them I was okay with the results.
Unfortunately, I'm overseas now so I cant collect the camera to see it for myself.
After I collect the camera and play around with it for a while, I'll let you guys know.
wormz777
Senior Member
Falcon said:Hello Wormz777, long time no see..
I got the same problem too for the set I just bought.
Yo! Yeah man... haven seen you post in a long time!
Sianz... are you planning to have it repaired? I haven done a thorough check, but ithe problem seems to be random... You got similar experience?
megascriler
New Member
Maybe you could post the picture here.
wind30 said:but the noise looks quite bad huh at ISO1600. Is there a NR setting on the F11? No right? But I guess it is better than other P&S. I see purple fringing too
Yours looks okay bro. The noise is normal, of course at 100% zoom its very visible in the shadows, but generally it is very usable at ISO1600.
Purple fringing is because you have high contrast and your aperture is wide open. (very common scenario if you are trying to take photos in low light with no tripod) If you zoom a bit or close the aperture more, you should be able to minimize purple fringing.
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