jdudley Posted February 28, 2008 Share Posted February 28, 2008 Look at the attached pics. I'm experiencing a serious moire problem (I assume this pattern is considered moire) with the D70. I can't say that I've ever seen this before, but it's showing up in lots of pictures from my most recent shoot. Why, exactly? I can see it when viewing at 100%, even 50% in some shots.<div></div> Link to comment Share on other sites More sharing options...
jdudley Posted February 28, 2008 Author Share Posted February 28, 2008 2nd picture<div></div> Link to comment Share on other sites More sharing options...
beauh44 Posted February 28, 2008 Share Posted February 28, 2008 I'm not sure if that's technically moire'. One definition I found: "Geometric pattern caused when two screened images are superimposed at certain angles." Anyway, I could be wrong, but that just doesn't seem to be what's happening here. If you shot in RAW have you perhaps tried a different RAW converter? Obviously if it's not moire and not a software problem, then that would leave something weird happening in the camera. I wish I could be more help - it's very strange - almost like a tiny maze was superimposed over much of the image! Good luck! Link to comment Share on other sites More sharing options...
jdudley Posted February 28, 2008 Author Share Posted February 28, 2008 Well, I'm using CS2, with its raw converter. I don't have the Nikon software installed. I'm trying to see why it's showing up in some pictures, but not in others. Looking at the metadata to see if it's a low-light thing, high-speed-shutter thing, etc. All shots were taken on the same day, at the same location, with the same camera & lens. Weird, to say the least. And not terribly convenient. I'll post more info in a minute. Link to comment Share on other sites More sharing options...
jdudley Posted February 28, 2008 Author Share Posted February 28, 2008 That image was with the ISO set at 200, no in-camera sharpening (or post sharpening), F4.5, 70mm. 1/1000 sec, all in manual. I've got other shots across the 18-70mm range of the lens (this is the decent kit lens that I got with the camera, the 18-70mm f3.5-4.5). I can't figure it out. Why would it be in one shot, but not in another? Makes no sense. I was using a couple of Alien Bees for lights, using a remote/wireless transmitter to trigger them. Link to comment Share on other sites More sharing options...
thomas_rutter Posted February 28, 2008 Share Posted February 28, 2008 For more troubleshooting you might want to determine if it happens when you shoot JPEG, or if it happens when you use the Nikon-supplied RAW converter. Looking at the image and knowing a little big about Bayer interpolation, I would suspect the RAW converter. However, I could be wrong. Link to comment Share on other sites More sharing options...
jdudley Posted February 29, 2008 Author Share Posted February 29, 2008 Hmmm.....found a few posts with similar issues: http://www.adobeforums.com/webx/.3c059101 One guy suggests it's the combination of external flash and shutter speed, since the D70 doesn't sync above 1/500 second. Could that be the problem? Obviously, the flashes fired and are captured. This problem seems particularly bad with this dog--some others aren't nearly as noticeable, or it's not there at all. Similar settings overall (most pics were either 1/800 or 1/1000 second). I guess I didn't realize the sync speed was only 1/500. What SHOULD happen to the picture if I use an external flash (with a hot shoe-based wireless transmitter) at 1/800 or 1/1000 shutter speed? Link to comment Share on other sites More sharing options...
gary_meader Posted February 29, 2008 Share Posted February 29, 2008 I just read something earlier tonight about ACR not working too well with RAW files from Nikon. I can't place the post just now, but try installing your Nikon software and see if that does it. Good Luck Link to comment Share on other sites More sharing options...
jdudley Posted February 29, 2008 Author Share Posted February 29, 2008 HMMM...looking back to last year's images (these are featured in my portfolio, so feel free to look at them....they're the "SPCA FACES" folder), I had the exact same setup. Same equipment (same lights, same wireless transmitter, same camera/lens, same room, even). Many of those shots were also shot at 1/800s or 1/1000s, though many were also at 1/640s. None show this level of this weird pattern, though in a few of the far underexposed shots, mainly at 1/1000 and above, it shows up a tiny bit. But it's not there in the others. So why would it be more pronounced this year than last? Is my camera going south? Link to comment Share on other sites More sharing options...
jdudley Posted February 29, 2008 Author Share Posted February 29, 2008 Gary, I'll try that if i can. You never know. Link to comment Share on other sites More sharing options...
davidlong Posted February 29, 2008 Share Posted February 29, 2008 Those patterns are generally called maze artifacts. It's a RAW converter issue. Link to comment Share on other sites More sharing options...
wogears Posted February 29, 2008 Share Posted February 29, 2008 I would DL the trial version of Capture NX and see what happens with it. I prefer ACR for my conversions, but NX is pretty spiffy too, and the trial will let you know where the issue lies. Link to comment Share on other sites More sharing options...
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