Hoaxville Posted January 19, 2010 Share #1 Posted January 19, 2010 Advertisement (gone after registration) Hi Guys, Would anyone be able to fill me in on whats going on in these images? I have taken around 2000 shots with my M8 since getting it about two months ago and these are the only two times something odd like this has happened. Luckily as you can see the shots are not 'keepers'. Thanks for any input / advice. g -- http://www.glendynivin.com Link to post Share on other sites More sharing options...
Advertisement Posted January 19, 2010 Posted January 19, 2010 Hi Hoaxville, Take a look here Speaking of strange artefacts? Whats this!?. I'm sure you'll find what you were looking for!
jaapv Posted January 19, 2010 Share #2 Posted January 19, 2010 This is well known - and avoidable. It is caused by a strong highlight just on the edge of the sensor - all M8s will do that. Link to post Share on other sites More sharing options...
Hoaxville Posted January 19, 2010 Author Share #3 Posted January 19, 2010 This is well known - and avoidable. It is caused by a strong highlight just on the edge of the sensor - all M8s will do that. ThanksJaap. So you mean if you have a REALLY strong light source like the sun bouncing off the water (in the yak shot) or a film light (like in the Ferrari shot) just on the edge of the frame, like at a very particular point, you will always get that effect? Interesting, and really good to know! g -- GlendynIvin.com Link to post Share on other sites More sharing options...
jaapv Posted January 19, 2010 Share #4 Posted January 19, 2010 Yes -it is caused by stray light activating the reference pixels on the edge. Link to post Share on other sites More sharing options...
okram Posted January 19, 2010 Share #5 Posted January 19, 2010 Anybody tested M9 for this? Link to post Share on other sites More sharing options...
Rick Posted January 19, 2010 Share #6 Posted January 19, 2010 Glenn... I found that on the first day I got my M8. It was a dark and rainy October night when my M8 arrived at work. The first picture I took was out the back door across the street. The light from a street light struck the edge of the sensor and my first or second shot did this. I don't think I've had a repeat more than once or twice since then. Link to post Share on other sites More sharing options...
jaapv Posted January 19, 2010 Share #7 Posted January 19, 2010 Advertisement (gone after registration) Anybody tested M9 for this?No reports yet in any case. Link to post Share on other sites More sharing options...
ho_co Posted January 19, 2010 Share #8 Posted January 19, 2010 Anybody tested M9 for this? The "dreaded green line" was noticed early with the M8 and is listed in the M8 FAQ. 1) It would be one of the first things to avoid with a new sensor. 2) It isn't listed in the M9 FAQ. 3) As Jaap said, no one has reported it with the M9. So I think you can safely say that it doesn't occur on the M9. Link to post Share on other sites More sharing options...
hoppyman Posted January 19, 2010 Share #9 Posted January 19, 2010 Anybody tested M9 for this? Is this a bright enough edge light for you? M9 Elmar 24 ASPH. uncropped. [ATTACH]183950[/ATTACH] Link to post Share on other sites More sharing options...
simonpg Posted January 20, 2010 Share #10 Posted January 20, 2010 The green banding is certaily an horrible artifact! But, I was of the impression that there was a "fix" issued. While it was not a firmware update or filter issue, I understood it was caused by the circuitry under the sensor, which (I think rightly or wrongly) I understood was corrected - their first 1500 or so cameras had new circuitry fitted and subsequent cameras were updated. Being a new M8 owner with a "so called" M8u (for update) my EXIF data shows it has the second version of that circuitry (sorry I can't recall its specific name). When I received the camera (used) I ran about 200 images at various ISO levels in a variety of light and angles that any experienced shooter knows will show up weaknesses. Definitely the light shown in some of the images here can play all sorts of horrible tricks on lenses and capture devices. So, it is a further reminder to watch for how the light is being captured. Since I have a Canon f1.2 lens and its 1960s coatings etc make it liable when wide open to flare when shooting at oblique angles to harsh light, I'll do some tests with it to see if it induces such behaviour. So, I ask if I have got the wrong idea about this issue having been limited to earlier cameras and subsequently fixed?? Cheers. Link to post Share on other sites More sharing options...
jaapv Posted January 20, 2010 Share #11 Posted January 20, 2010 Yes, you are wrong. This is a thing all M8 and M8.2 cameras exhibit. You are confusing it with highlights inside the frame causing banding at high ISO, which indeed was corrected on a camera recall in 2006, together with rainbow banding. And it has nothing whatever to do with lens flare. It only occurs if a very strong specular highlight hits the edge of the sensor. Link to post Share on other sites More sharing options...
simonpg Posted January 27, 2010 Share #12 Posted January 27, 2010 Many thanks for clearing that up Jaap. Now I understand. I must say that last weekend I did my first serious scenic shoot around a city dockland residential area - it was so good to have an M camera in my hands again. And the quick look I'v had of the images (even just the JPEG files) continues to reaffirm in my mind how good the sensor quality is and how well matched to the Leica lenses it is. Despite many attempts I have still not been able to force bad behaviour from the sensor. But I suppose that like many things, it will happen when you least expect it! Link to post Share on other sites More sharing options...
Bananafishbone Posted January 27, 2010 Share #13 Posted January 27, 2010 I have my M8 about half a year now and had that kind of artefacts only on two pictures i shot the same day under similar conditions (bright sunlight from the left side). Never seen it again. Luckily it seems to be a rare phenomenom, unfortunately on two of the best pictures i ever shot Link to post Share on other sites More sharing options...
cbretteville Posted January 27, 2010 Share #14 Posted January 27, 2010 Is this a bright enough edge light for you? M9 Elmar 24 ASPH. uncropped.] Geoff, the light source has to be mostly out of frame or just out of frame. Carl Link to post Share on other sites More sharing options...
hoppyman Posted January 27, 2010 Share #15 Posted January 27, 2010 Carl, I understand. however I thought I had enough thermonuclear energy overlapping the edge of the frame to try to trigger any problem. By the way I was also pleased with the flare performance (lens not solar). Link to post Share on other sites More sharing options...
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