ncc1701 Posted December 23, 2011 Share #1 Posted December 23, 2011 Advertisement (gone after registration) Just got a M8 with 500 actuations fer a good price! No lines on long exposures, alignment perfect! But... When shooting anything long where noise reduction kicks in I get rgb artifacts all over the place resembling dead pixels on LCD display. This is just on the LCD preview, when zoomin in & out on camera they go away, go next photo and back they are there again. Puzzling... They do not exist on actual photos, just the preview. Bad firmware flash or evidence of another problem. Camera just back from Allendale after a "Drive Blocked" issue. Any Ideas, Thanks in advance. Link to post Share on other sites More sharing options...
Advertisement Posted December 23, 2011 Posted December 23, 2011 Hi ncc1701, Take a look here M8 LCD + Long exposures = Artifacts on LCD?. I'm sure you'll find what you were looking for!
hoppyman Posted December 23, 2011 Share #2 Posted December 23, 2011 This sounds like you are describing digital noise represented in the preview of the high ISO image. That is normal. However, the low quality and low resolution preview on the LCD looks worse than the full size file once you get it on your computer. Link to post Share on other sites More sharing options...
ncc1701 Posted December 23, 2011 Author Share #3 Posted December 23, 2011 Could it be a bad firmware dump? Can you re-install firmware? I'm at 2.014, I think is the latest. Link to post Share on other sites More sharing options...
buranca Posted December 23, 2011 Share #4 Posted December 23, 2011 I have noticed the same thing running the latest FW as well. Frightening at first, but quickly disregarded as it only seems to exist as you described. Link to post Share on other sites More sharing options...
Guest Ming Rider Posted December 23, 2011 Share #5 Posted December 23, 2011 Yep, I'm running 2.014 and get the same problem on preview but dissapearing with zoom in/out, though not all the time. Doesn't appear in images on computer. Slightly unsettling as it only went to Solms for pixel mapping 6 months ago, so fingers crossed it stays on the preview only. Link to post Share on other sites More sharing options...
jaapv Posted December 24, 2011 Share #6 Posted December 24, 2011 This is completely normal. On long exposures the M9 does a black frame type noise reduction. Any sensor will start to show differences in pixels as the sensor heats up. That is the reason, for instance, that astronomical sensors are cooled by liquid nitrogen. Leica solves the problem by taking a second, black exposure of the same length and subtracting that from the actual file. This gets completely rid of this type of noise without any negative effect on the picture. As the camera shows the embedded initial jpg on the lcd first, and replces it with the final one as soon as it is generated, you will see the noise disappearing, irrespective whether you are zooming or not. The same goes for the histogram and the clipping warning. They will change before your eyes. So don't' worry. Your camera is working exactly as it should. Link to post Share on other sites More sharing options...
ncc1701 Posted December 24, 2011 Author Share #7 Posted December 24, 2011 Advertisement (gone after registration) Thanks for all your responses! I am at ease now. Link to post Share on other sites More sharing options...
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