cbretteville Posted August 28, 2007 Share #21 Posted August 28, 2007 Advertisement (gone after registration) I don't have access to my test shots here at the office. I'll look for the one I'm thinking of tonight. Anyway, it should be easy enough to reproduce - unless it actually has been fixed in one of the FW releases. I know positively I tested for and found it one of the first days I had mine (early March). It then had v1.09 which it cam with from the factory or v1.092 which was released just after I got the camera. Can't remember if I've done regression testing on newer releases for this issue. - C Link to post Share on other sites More sharing options...
Advertisement Posted August 28, 2007 Posted August 28, 2007 Hi cbretteville, Take a look here is this normal M8 banding?. I'm sure you'll find what you were looking for!
cbretteville Posted August 28, 2007 Share #22 Posted August 28, 2007 Didn't find the test shot from March, but I did a series of new ones. The green streaking is very much there with FW v1.07 and at all ISOs. The thickness of the streak is proportional to the size of the bright light on the edge of the frame. The ones below were shot fairly close to a halogen lamp at ISO160, f6.4 with a 28 'cron. The distance doesn't matter that much, all it takes if a bright source of light at the edge of the frame. Let me add that it is easy to avoid, you have to place it right for the streak to appear. These are just in-camera jpgs resized no other processing what so ever. 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! To illustrate how hit and miss this is here are two more shots of the same light but a little further away. Notice the difference in size of the light. With a streak: Without: - Carl Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! To illustrate how hit and miss this is here are two more shots of the same light but a little further away. Notice the difference in size of the light. With a streak: Without: - Carl ' data-webShareUrl='https://www.l-camera-forum.com/topic/32027-is-this-normal-m8-banding/?do=findComment&comment=340712'>More sharing options...
bayerische Posted August 28, 2007 Share #23 Posted August 28, 2007 it gets worse -- recheck my link and check the second picture witht he candle: M8 sensor problem This is a major hardware fault. Camera will be in NJ anyday now. Eric Wow, I have seen the second picture problem here before and I got it in my new 3197XXX with latest firmware! I'll make a smaller pic and post it soon. Link to post Share on other sites More sharing options...
bayerische Posted August 28, 2007 Share #24 Posted August 28, 2007 Here's my image taken on sunday. RAW, PhaseOne, nothing done, but converting to JPG and resize in Photoshop 7 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/32027-is-this-normal-m8-banding/?do=findComment&comment=340761'>More sharing options...
luigi bertolotti Posted August 28, 2007 Share #25 Posted August 28, 2007 Here's my image taken on sunday. RAW, PhaseOne, nothing done, but converting to JPG and resize in Photoshop 7 Ouch ! THIS is a REAL band ! I'll try my one at once... Link to post Share on other sites More sharing options...
luigi bertolotti Posted August 28, 2007 Share #26 Posted August 28, 2007 And... after a number (5-6) of trials, I finally obtained MY BANDING ! Firmware 1.102 and a Summicron 35 of 1961 (8 elements, Wetzlar). Curious: it's not easily to be related directly to the positioning of the strong light source... another pic with the light just a little more at right had no band...surely an intriguing issue for the poor Leica Software guys... wait and see... for myself, I surely don't want to send my M8 to service for this... I'm still waiting for a real picture of mine that puts in evidence this problem. 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! Both DNG, 640 ASA, incandescent light, Lightroom, no action made, jpg conversion in LR an PS resizing: no more. Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! Both DNG, 640 ASA, incandescent light, Lightroom, no action made, jpg conversion in LR an PS resizing: no more. ' data-webShareUrl='https://www.l-camera-forum.com/topic/32027-is-this-normal-m8-banding/?do=findComment&comment=340808'>More sharing options...
bayerische Posted August 28, 2007 Share #27 Posted August 28, 2007 Advertisement (gone after registration) Ha! This fault is just so easy to reproduce, it's almost funny! I just took 2 pictures of a wine bottle with a candel at the very edge of the frame, and the second one of the two I had it! Link to post Share on other sites More sharing options...
ho_co Posted August 29, 2007 Share #28 Posted August 29, 2007 Yes, all M8's have this green band. It's caused by light getting to the edge pixels which the circuitry uses to determine a black value. Leica has said they are working on a fix and hoping to do it in firmware; Mark Norton even figured out and submitted to them a flowchart as to how the problem might could be avoided by modifying the camera's software. Don't worry about it. It's just another of the camera's endearing traits. It will be there until such time as Leica informs us that it has been eliminated. --HC Link to post Share on other sites More sharing options...
bayerische Posted August 29, 2007 Share #29 Posted August 29, 2007 BTW, Talking about the banding and picture noise. Exposure is really key here. At low ISO you can adjust the pic while still RAW pretty good in PhaseOne for example. Here's a quick test, with exposure. First underexposure ISO 2500 but boosted exposure in PhaseOne Second exposure is pretty good ISO 2500. Extreme difference! Sorry that the focus is at different points. 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/32027-is-this-normal-m8-banding/?do=findComment&comment=341302'>More sharing options...
robsteve Posted August 29, 2007 Share #30 Posted August 29, 2007 Sorry that the focus is at different points. Did the couch move on you Link to post Share on other sites More sharing options...
bayerische Posted August 29, 2007 Share #31 Posted August 29, 2007 Did the couch move on you Yeah! These damn Swedish couches! Link to post Share on other sites More sharing options...
ArtZ Posted August 29, 2007 Share #32 Posted August 29, 2007 Yes, all M8's have this green band. It's caused by light getting to the edge pixels which the circuitry uses to determine a black value. Howard, I've been trying to reproduce the green line... well, I can't. I tried with v.1.107 and with v.1.102, getting closer to the bulb, getting further, changing ISO... nothing to do! Well, I suppose I'm lucky or maybe I don't do it properly. Cheers. . Link to post Share on other sites More sharing options...
jaapv Posted August 29, 2007 Share #33 Posted August 29, 2007 I cannot produce it on both my bodies - I feel left out Link to post Share on other sites More sharing options...
luigi bertolotti Posted August 30, 2007 Share #34 Posted August 30, 2007 I cannot produce it on both my bodies - I feel left out Try and try again Jaap... and you too shall enjoy YOUR OWN BAND before to have mine, I tried with no success with 2 other home lamps, finally found the right one, but, as you can see from my 2 pics, I had to move slightly, shot by shot, and finally... I'm proud to join the band ! And the fact that my band crosses a Bruegel book had to be encouraging for you... Link to post Share on other sites More sharing options...
ho_co Posted August 30, 2007 Share #35 Posted August 30, 2007 Gee, guys! Don't you have anything better to do? I haven't tried to get the banding on my camera either, but I'm sure it's there. It is a hardware behavior, not firmware related, so it doesn't make any difference which system software you use. (Now isn't that like me? I'm speaking from others' experience only, and acting as if I know! ) The problem occurs when a grossly overexposed bright spot is just outside the picture area. You can start by pointing the camera toward a lamp with the lamp very near the edge of the frame. And then rotate the camera just a little bit, moving the overexposed source toward the edge of the frame. Keep repeating until the source is outside the frame. Depending on how large the source is and how much overexposed it is, you're likely to get the friendly green mark of the Leica M8 when the source is right at the edge of the image, either in the picture area or just outside. Luigi, maybe you should advertise the model number of the lamp with which you found the effect, so we can all try with a known standard! Probably the best thing is, don't bother with the test. You may never see the effect if you don't search for it. I hope your camera doesn't show it.--But don't count on it. And when one day you're surprised by the appearance of the great green band, you'll know what it is and shrug it off. --HC Link to post Share on other sites More sharing options...
faneuil Posted September 6, 2007 Author Share #36 Posted September 6, 2007 Just an update- Leica NJ received my camera last week and is doing a complete sensor replacement for the problem shown in the link below. Eric Worst case scenario: ISO 2500, Noctilux wide open.I pumped up the exposure to show 'stuck' pixels and banding: M8 sensor issues Is this normal from an 'upgraded' M8? Eric Link to post Share on other sites More sharing options...
bayerische Posted September 6, 2007 Share #37 Posted September 6, 2007 Just an update- Leica NJ received my camera last week and is doing a complete sensor replacement for the problem shown in the link below. Eric That's great news, I guess. Personally I think the pics do have some "dead" pixels, but the overall poor quality is due to underexposure, high ISO andpoor lightning. I wouldn't want to be without my toy for a long time:D Link to post Share on other sites More sharing options...
faneuil Posted September 7, 2007 Author Share #38 Posted September 7, 2007 The poor image quality was intentional to show the dead pixels. Here is what my M8 can really do (just a few days before!) Ticonderoga. Link to post Share on other sites More sharing options...
pthompson Posted September 7, 2007 Share #39 Posted September 7, 2007 I love the B&W on this series; how are you doing the conversions? Link to post Share on other sites More sharing options...
faneuil Posted September 7, 2007 Author Share #40 Posted September 7, 2007 Good old Adobe Lightroom. I barely touch photoshop anymore. Eric I love the B&W on this series; how are you doing the conversions? Link to post Share on other sites More sharing options...
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