naf Posted November 19, 2015 Share #1 Posted November 19, 2015 Advertisement (gone after registration) Hey, this is my first post here, regarding my first Leica, the Leica Q. After 1 week I feel more natural with this camera that I felt with the Sony A7 series after 2 years. That's coming from a Canon DSLR shooter. Anyway, I was preparing a couple images for printing today when I noticed something that concerns me, and I wanted to know if anyone else can chime in on this issue. Viewing at 100%, there's unusual and obvious pixelation, mostly around diagonal lines on a flat background. This isn't just pixels on my monitor, as it shows up the same on screens of varying pixel density. It also shows up when printing at native resolution, which is totally not okay (printed file was .dng converted to .tiff). It's dramatic enough that you don't have to be a pixel peeper to notice it. The pixelation on the same image out-of-camera JPEG looks a little different but is more disastrous. What's especially weird is that it doesn't seem to be an issue across the whole frame, but that may just be because the colors elsewhere in the frame are different. This is also not the only file with this problem, so I have a hard time believing it's corrupted (Hoodman SD card, FYI). I haven't seen this kind of pixelation from either my Canon or Sony, and it freaks me out a little bit. I attached a .jpg 100% crop. This is in between the center of the frame and the bottom left corner. It was shot at f8, 1/250, ISO 100. I couldn't find this issue reported anywhere online. If you guys have heard of it, I'd greatly appreciate being pointed in the right direction. Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/253315-pixelated-images/?do=findComment&comment=2932269'>More sharing options...
Advertisement Posted November 19, 2015 Posted November 19, 2015 Hi naf, Take a look here Pixelated images. I'm sure you'll find what you were looking for!
@McLeica Posted November 20, 2015 Share #2 Posted November 20, 2015 Does it show up on the RAW file? Link to post Share on other sites More sharing options...
naf Posted November 20, 2015 Author Share #3 Posted November 20, 2015 Does it show up on the RAW file? Yes, shows up on .dng. Still shows up when converted to .psd, .tiff, .jpg. Link to post Share on other sites More sharing options...
tgm Posted November 21, 2015 Share #4 Posted November 21, 2015 Yes, shows up on .dng. Still shows up when converted to .psd, .tiff, .jpg. May be I miss the point, I would say the image looks o.k. it is a digital sensor. If you view in photoshop at 400 % you see how edges of diagonal lines break appart into pixels. Link to post Share on other sites More sharing options...
lanetomlane Posted November 21, 2015 Share #5 Posted November 21, 2015 Sorry, but the image looks fine to me. Regards, Tom Link to post Share on other sites More sharing options...
Manoleica Posted November 21, 2015 Share #6 Posted November 21, 2015 I believe the Q has the ability to electronicly re adjust/crop to other than the 28mm.. Have you checked All your settings.. Have you maybe cropped the original 28mm when PP? Link to post Share on other sites More sharing options...
Keith (M) Posted November 21, 2015 Share #7 Posted November 21, 2015 Advertisement (gone after registration) Are you referring to areas where the yellow horizontal rails have the intense blue sky as background? If so, perhaps using the Defringe function in LR would help. Link to post Share on other sites More sharing options...
pop Posted November 21, 2015 Share #8 Posted November 21, 2015 I can see some "jaggies" along some thin twigs. That's perfectly normal for a lens projecting a very sharp image on a digital sensor. Other cameras have a blurring filter in front of the sensor in order to reduce this and other effects. So you get to choose: a camera which deliberately blurs every image or a camera where you can do so yourself if and when the need arises. Link to post Share on other sites More sharing options...
naf Posted November 21, 2015 Author Share #9 Posted November 21, 2015 Are you referring to areas where the yellow horizontal rails have the intense blue sky as background? If so, perhaps using the Defringe function in LR would help. Yes, that's what I'm referring to. It's most obvious where the yellow rails are at an angle against the blue sky. The 3rd rail down is the worst offender, it's a stair-step, not a smooth a line. It's not present at all where the yellow rails are over the wood, just the blue sky. Thanks for the suggestion, I'll poke around and see if there's a setting that straightens it out. This is a 100% crop, not 400%, and it shows up on a print. It's also not my only camera with a sharp lens that omits an AA filter, but it is the only one showing this effect. Link to post Share on other sites More sharing options...
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