wilfredo Posted December 29, 2015 Share #1 Posted December 29, 2015 Advertisement (gone after registration) I noticed what appear to be shades of vertical lines in this photograph with plenty of sky. I exaggerated the effect here to make it more visible. In the normal photo it’s not so apparent but it’s still there. This was shot with the Monochrom CCD version. Any thoughts as to what’s going on here? This is a first for me and I’ve been shooting with a digital M since the dawn of the M8. 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/254934-any-thoughts/?do=findComment&comment=2957946'>More sharing options...
Advertisement Posted December 29, 2015 Posted December 29, 2015 Hi wilfredo, Take a look here Any Thoughts?. I'm sure you'll find what you were looking for!
wilfredo Posted December 29, 2015 Author Share #2 Posted December 29, 2015 Here's my original version. I didn't notice the lines at first. 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/254934-any-thoughts/?do=findComment&comment=2957950'>More sharing options...
Tailwagger Posted December 29, 2015 Share #3 Posted December 29, 2015 Brand new to Leicas but I've already seen similar banding with my 240 when shooting in low light at higher iso and then trying to push the exposure a little further in post. Link to post Share on other sites More sharing options...
pop Posted December 29, 2015 Share #4 Posted December 29, 2015 It might be a grid consisting of vertical and horizontal lines, even if the vertical lines are more obvious in this case. I've seen that effect quite often in pictures which have been rescaled (shrunk). Did you rescale the JPEG version of the picture? Link to post Share on other sites More sharing options...
johnwolf Posted December 29, 2015 Share #5 Posted December 29, 2015 Dumb question: You're not shooting through a car window, are you? And is this a night shot that's severely pushed? I ask because of the lights. Link to post Share on other sites More sharing options...
adan Posted December 29, 2015 Share #6 Posted December 29, 2015 M240 high ISO banding runs parallel to the LONG side of the frame. There are lines in the picture that do this (bottom), but they are just "real-world" grooves in the pavement to prevent hydroplaning, not an imaging artifact. M240 noise bands are also associated with the red color channel - and a Monochrom by definition has no red channel. The vertical fuzzy bands wilfredo is asking about run the wrong way to be noise bands. As johnwolf implies, car windshields/windscreens have a plastic laminate layer to prevent the glass shattering into knife-like shards if broken - this can cause visual artifacts in pictures (car window glass ain't optical glass) - especially using a polarizer. But given the angle of view (with no car hood visible) I suspect this picture was made "on foot." If these bands really are singular to this specific picture, I suspect they just have to do with the patchy cloud pattern ("mackerel sky") and the way skylight is leaking through it. If it also shows up in less textured situations, then it might be a sensor-read problem. Keep an eye peeled, and if it shows up in pictures with no patterning to the subject matter, you might send Leica a copy and see what they say. Link to post Share on other sites More sharing options...
wilfredo Posted December 29, 2015 Author Share #7 Posted December 29, 2015 Advertisement (gone after registration) Thank you all, and no, I was not shooting through a car window. I went back to the DNG and started over again from scratch. I think I just got too carried away with the PP. Here's another version. I need to be careful not to get carried away. This particular shot has sentimental value since this historic bridge is scheduled to be taken down. The following day the bridge was closed to pedestrian traffic. 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/254934-any-thoughts/?do=findComment&comment=2958156'>More sharing options...
Ecar Posted January 1, 2016 Share #8 Posted January 1, 2016 Glad you managed to get the result you wanted. FWIW, I noticed a while ago that aggressive post-processing in LR combined with an alteration (even a slight one) in the geometry of a picture - e.g., correcting perspective - creates noticeable artifacts in the MM files, particularly in the shadows. I haven't been bothered to try another processing software to understand whether this is due to LR or to the MM files, but I have tried to be more disciplined in framing and exposing, which I guess is a good thing. Link to post Share on other sites More sharing options...
BerndReini Posted January 3, 2016 Share #9 Posted January 3, 2016 I have seen this kind of pattern created by car windows before. Link to post Share on other sites More sharing options...
otto.f Posted January 3, 2016 Share #10 Posted January 3, 2016 Brand new to Leicas but I've already seen similar banding with my 240 when shooting in low light at higher iso and then trying to push the exposure a little further in post. Exactly the same experience here but with MM9, ISO6400 or more and then in PP still pushing up. The idea is that it is better to stay low in ISO and then push more, this does not give the banding. Which does not mean that this the cause here Wilfredo, could be Link to post Share on other sites More sharing options...
NickR Posted January 7, 2016 Share #11 Posted January 7, 2016 Exactly the same experience here but with MM9, ISO6400 or more and then in PP still pushing up. The idea is that it is better to stay low in ISO and then push more, this does not give the banding. Which does not mean that this the cause here Wilfredo, could be I wonder then if under such extreme conditions you are actually seeing natural variations of slit speed as it passes in front of the sensor. Link to post Share on other sites More sharing options...
jaapv Posted January 8, 2016 Share #12 Posted January 8, 2016 The shutter runs vertically.. In that case the banding would be horizontal. Link to post Share on other sites More sharing options...
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