Mokkacream Posted October 26, 2009 Share #1 Posted October 26, 2009 Advertisement (gone after registration) M9, 50 f/1.4, ISO 800, handhold, AutoWB, LR 2.5, Chromasoft M9 profile, no further processing # 2+3 100% crop 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/101544-m9-higher-iso-in-practise/?do=findComment&comment=1090014'>More sharing options...
Advertisement Posted October 26, 2009 Posted October 26, 2009 Hi Mokkacream, Take a look here M9 higher ISO in practise. I'm sure you'll find what you were looking for!
carstenw Posted October 26, 2009 Share #2 Posted October 26, 2009 That looks great, nice colours and practically no noise. Is that a 100% crop, and how did you process? Link to post Share on other sites More sharing options...
Mokkacream Posted October 26, 2009 Author Share #3 Posted October 26, 2009 M9, 50 f/1.4, ISO 1600, handhold, AutoWB, LR 2.5, Chromasoft M9 profile, no further processing # 2+3 100% crop 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/101544-m9-higher-iso-in-practise/?do=findComment&comment=1090022'>More sharing options...
vikasmg Posted October 26, 2009 Share #4 Posted October 26, 2009 Very usable even at 1600. I've been surprised as well by how much better it is relative to the M8. - Vikas Link to post Share on other sites More sharing options...
Mokkacream Posted October 26, 2009 Author Share #5 Posted October 26, 2009 M9, 50 f/1.4, ISO 1250, handhold, AutoWB, LR 2.5, Chromasoft M9 profile, Automatic WB, no further processing with 100% crops 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/101544-m9-higher-iso-in-practise/?do=findComment&comment=1090055'>More sharing options...
Mokkacream Posted October 26, 2009 Author Share #6 Posted October 26, 2009 To me it appears, that High ISO Noise (HIN) ... 1) is very well controlled in black and very dark parts 2) is almost not visible in very light parts 3) is most prominent in the range between To me, the noise of the Leica M9 keeps almost always being a kind of beautiful, not disturbing. It reminds me on the grain of film emulsions. It doesn't look like an electronic device noise, that we saw with the very first digital cameras, at all. Link to post Share on other sites More sharing options...
rosuna Posted October 26, 2009 Share #7 Posted October 26, 2009 Advertisement (gone after registration) The problem with high ISO shots is the light conditions of the scene in these cases. The light isn't good, usually. The image quality deteriorates due to increase in ISO, but also due to warm lights. So we have two causes of image degradation operating at the same time. This affects sharpness, color reproduction, etc. It is very difficult to evaluate high ISO image quality under poor light conditions. Link to post Share on other sites More sharing options...
erl Posted October 26, 2009 Share #8 Posted October 26, 2009 Rosuna you are quite correct. Add to that the increase of importance of 'correct exposure' with increase of ISO and I think we then have the 'hat trick' of handling hi iso. Link to post Share on other sites More sharing options...
carstenw Posted October 26, 2009 Share #9 Posted October 26, 2009 One problem with high ISO noise is that it is so often the result of shooting indoors, by a low level of tungsten light. A white balance is then required, which brings up the blue channel so much that the noise in the blue channel is boosted significantly. The second set of images above gets around this by not doing a white balance, but as a result has a strong yellow cast. What does it look like when it is corrected? The EU laws have apparently just made traditional glowing filament light bulbs illegal, so I suppose by the time existing stocks have been exhausted, the old yellow light problem will have changed to something different. Does anyone know how digital cameras handle energy saver bulbs, and what the spectrum of such a bulb is like? Link to post Share on other sites More sharing options...
wattsy Posted October 26, 2009 Share #10 Posted October 26, 2009 Does anyone know how digital cameras handle energy saver bulbs, and what the spectrum of such a bulb is like? http://www.lightbulbs-direct.com/article/colour-temperature/ Link to post Share on other sites More sharing options...
brill64 Posted October 26, 2009 Share #11 Posted October 26, 2009 "that's the way to do it!" Link to post Share on other sites More sharing options...
tgray Posted October 26, 2009 Share #12 Posted October 26, 2009 The real problem with fluorescent bulbs is that they don't have continuous black body type spectrums. Bulbs with higher CRI (90+) ratings are close enough to the real thing to not cause a problem, but there are a lot of bulbs out there with crummy ratings, which result in that nice green cast. I've never seen a CRI rating on the compact fluorescent lights either, so I don't know the variance in those. Link to post Share on other sites More sharing options...
Jamie Roberts Posted October 26, 2009 Share #13 Posted October 26, 2009 {snipped} The second set of images above gets around this by not doing a white balance, but as a result has a strong yellow cast. What does it look like when it is corrected? {snipped} Carsten, just dl one of the 100% crops with that "gray" specular. Drop into PS and use a levels layer, and put the gray dropper on the specular. Now you have a worst-case JPEG adjustment at 100% (and probably cooler than you'd like, judging by skin). There's still a half-stop underexposure, but from what I see, the results are extremely promising Link to post Share on other sites More sharing options...
stevem7 Posted October 26, 2009 Share #14 Posted October 26, 2009 High ISO and the M9 is not an issue at all. I shot some test shots around my house last night at ISO 2500 and 1.4. Noise was a non issue, even with straight out of camera shots taken under indoor light. Posted them on my site... MY ONGOING LEICA M9 DIARY - OCTOBER 2009 Again, just silly test shots but if I did that with the M8 it would be a different story. The samples posted in this thread look great. I shot some stuff last week for a client and two of my shots were at ISO 2000 and they looked great printed without any perceivable noise. Link to post Share on other sites More sharing options...
wattsy Posted October 26, 2009 Share #15 Posted October 26, 2009 Noise was a non issue. Indeed, but that's not the point. For me, the lack of detail is the point. Link to post Share on other sites More sharing options...
rosuna Posted October 26, 2009 Share #16 Posted October 26, 2009 The noise (grainy look) isn't a problem for me either...the problem is the lack of sharpness, tonal variation and gradation, dynamic range and color gamut. The M8 responds badly under adverse low light conditions: severe losses in image quality. A "correct" exposure" isn't enough. It is the bad tungsten light the main cause. CMOS based cameras also suffer under these light conditions, badly. There aren't magic recipes for this... more noise reduction (false signal) helps, but the filtered (Bayer) nature of the digital sensors is the main cause, besides the signal to noise ratio... Link to post Share on other sites More sharing options...
gravastar Posted October 26, 2009 Share #17 Posted October 26, 2009 I've been asked to photograph at an event and have been warned that the hotel lighting is a mixture of tungsten and low energy fluorescent. Some rooms have one or the other and some a mixture. Before I travel I've been very quickly trying out M9 profiles built using the Colorchecker Passport. One good thing is you can build "dual illuminant" profiles that cater for illumination from mixed sources eg. tungsten/fluorescent. So far the results using a Gretag Macbeth color chart as a test subject have been very encouraging . I'll be taking the Passport with me so I can generate profiles specific to a room's lighting. Bob. Link to post Share on other sites More sharing options...
carstenw Posted October 26, 2009 Share #18 Posted October 26, 2009 Interesting. It seems likely then that the new EU regulations will improve high ISO photos Link to post Share on other sites More sharing options...
pklein Posted October 26, 2009 Share #19 Posted October 26, 2009 Interesting. It seems likely then that the new EU regulations will improve high ISO photos ...or, if these "Green" energy-saver bulbs cause green color casts, inspire a Renaissance of black and white photography. --Peter Link to post Share on other sites More sharing options...
carstenw Posted October 26, 2009 Share #20 Posted October 26, 2009 That would be good too. I hope that Leica one day re-adds the option of shooting DNG only, with a B&W preview. That was one of my favorite "features" and I only upgraded my firmware with a heavy heart. Link to post Share on other sites More sharing options...
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