Vincentango Posted April 16 Share #1 Posted April 16 Advertisement (gone after registration) Hi, everyone. I use my lovely M9 (CCD 15) and 8 element, tried to capture some backlight and I found this...Is my M9 sensor problem? or my 8 element? kinda frustrated 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/420531-about-image-quality-of-m9/?do=findComment&comment=5787431'>More sharing options...
Advertisement Posted April 16 Posted April 16 Hi Vincentango, Take a look here About image quality of M9. I'm sure you'll find what you were looking for!
mujk Posted April 16 Share #2 Posted April 16 I assume you mean the white streak to the left of the sun? I don't think there is any other problem than a massive overexposure of part of the sensor by a way too bright light source within the image frame. In such cases all sorts of weird things can happen, particularly with a CCD sensor. 1 Link to post Share on other sites More sharing options...
jaapv Posted April 16 Share #3 Posted April 16 Sensor blooming on a CCD sensor, well known and documented on our FAQ 3 Link to post Share on other sites More sharing options...
Topsy Posted April 16 Share #4 Posted April 16 I think that shot would be a problem for any sensor/film. 3 Link to post Share on other sites More sharing options...
jaapv Posted April 16 Share #5 Posted April 16 I doubt it; this was a known effect on CCD sensors but I don’t recall seeing it on a CMOS sensor. Link to post Share on other sites More sharing options...
Vincentango Posted April 17 Author Share #6 Posted April 17 So it is unfixable, right? All I need to do is just turn EV down right? Thanks everybody:) Link to post Share on other sites More sharing options...
mujk Posted April 17 Share #7 Posted April 17 Advertisement (gone after registration) 41 minutes ago, Vincentango said: So it is unfixable, right? All I need to do is just turn EV down right? Thanks everybody:) I think there are several ways to fix this. One is to turn down exposure significantly as you suggest. This of course makes the whole image darker, so there would be almost no shadow detail. Another is to place the sun behind something, like a building or tree trunk, or outside the frame. Of course you can also edit out the artefact in post processing. Link to post Share on other sites More sharing options...
3D-Kraft.com Posted April 17 Share #8 Posted April 17 (edited) What irritates me is the direction of that streak. Usually, that kind of blooming happens vertically on most CCD sensors. Did you rotate the image? I also would recommend post processing. Otherwise you would have to turn down the exposure too significantly. Edited April 17 by 3D-Kraft.com Link to post Share on other sites More sharing options...
costa43 Posted April 17 Share #9 Posted April 17 (edited) This happens now and again on the CCD sensors in extremely bright scenes. Totally normal for the technology and nothing you have to be concerned about. I experienced it a number of times when I had an m9. Nowadays with the AI tools at your disposal, it’s probably easier to keep exposure correct with that sensor and edit it out. Edited April 17 by costa43 Link to post Share on other sites More sharing options...
Vincentango Posted April 17 Author Share #10 Posted April 17 53 minutes ago, 3D-Kraft.com said: What irritates me is the direction of that streak. Usually, that kind of blooming happens vertically on most CCD sensors. Did you rotate the image? I also would recommend post processing. Otherwise you would have to turn down the exposure too significantly. No, I didn’t rotate the image. This photo is taken vertically, not horizontally. But I use another M9 (CCD16) to shoot backlight(not the exact same image and maybe the light is not strong enough?), it didn’t have the blooming:( it’s rather frustrating Link to post Share on other sites More sharing options...
costa43 Posted April 17 Share #11 Posted April 17 It has nothing to do with the sensor ID. This is a sensor issue and all the M9 sensors are the same, irrespective of whether they have the original cover glass or a replaced one. It’s not something you can always replicate either, it just happens now and again. I wouldn’t give it a second thought personally and continue enjoying your photography and the benefits of this sensor. It’s an easy fix in post. 1 Link to post Share on other sites More sharing options...
pgk Posted April 17 Share #12 Posted April 17 9 minutes ago, costa43 said: It has nothing to do with the sensor ID. This is a sensor issue and all the M9 sensors are the same, irrespective of whether they have the original cover glass or a replaced one. It’s not something you can always replicate either, it just happens now and again. I wouldn’t give it a second thought personally and continue enjoying your photography and the benefits of this sensor. It’s an easy fix in post. I can't actually remember having this problem and I have used and still use, my M9s as my primary camera of choice and have done since they came out. The OP shot is pretty extreme in terms of exposure and contrast though. Link to post Share on other sites More sharing options...
costa43 Posted April 17 Share #13 Posted April 17 (edited) Just now, pgk said: I can't actually remember having this problem and I have used and still use, my M9s as my primary camera of choice and have done since they came out. The OP shot is pretty extreme in terms of exposure and contrast though. It's really quite rare but I have experienced it a few times with my M9 when shooting into a very bright light source, generally the sun. I've just had a look through my archive and found a similar example from one of my shots. 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! Edited April 17 by costa43 1 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/420531-about-image-quality-of-m9/?do=findComment&comment=5787785'>More sharing options...
Casey Jefferson Posted April 17 Share #14 Posted April 17 1 hour ago, Vincentango said: No, I didn’t rotate the image. This photo is taken vertically, not horizontally. But I use another M9 (CCD16) to shoot backlight(not the exact same image and maybe the light is not strong enough?), it didn’t have the blooming:( it’s rather frustrating This is more in line with my experiences, had 3 M9s and only one exhibit this very phenomenon, and happens pretty rarely. It's annoying when it happens especially when you thought you got the shot but ruined by this. Link to post Share on other sites More sharing options...
costa43 Posted April 17 Share #15 Posted April 17 On a positive note, I wanted to thank the OP for this post, when looking for an example, I ended up going through so many old photos taken with my M9-P. it reminded me how wonderful this camera is. 3 Link to post Share on other sites More sharing options...
Archiver Posted April 24 Share #16 Posted April 24 This happened to one of my M9 photos in a similar situation, shooting directly into the sun in a moderately low position. Until now, I thought of it as freak lens flare, and regarded it as a lovely feature of the image. 🤭 Link to post Share on other sites More sharing options...
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