Jump to content
bla

M8 hideous unusable high ISO performance thread

Recommended Posts

Advertisement (gone after registration)

I have been experimenting with M8 & 9 with good results.  One thing that helps me is finding a preset I can reuse for iso 160 noise reduction.    Enlarge to 100%  and look at 125 grey .    50 NR and 50 detail seems to work.  To me,  if I start with a clean image,  there is less noise after the push.

 

The Nikon D750 which is a decent low light camera,  responds well to iso 1600 and a two stop push to 6000.  Same NR before push.

 

I think things might be improved if I did NR separately on RGB layers in PS and then went back to ACR as a smart object for the push.  

 

Experiment as you have time.

Share this post


Link to post
Share on other sites

The M8 is not all that bad at 1250. Some of you will remember when the M8 came out, there was a guy who shot quite a bit at 1250 because he liked the noise, calling it more film-like. But he was mostly interested, and the results were what they were because he converted them all to bw. I wish I could remember his name, but just can't get the grey cells to work that well.

That said I mostly limited my M8 & M8.2 to 640.

Share this post


Link to post
Share on other sites

I have been experimenting with M8 & 9 with good results.  One thing that helps me is finding a preset I can reuse for iso 160 noise reduction.    Enlarge to 100%  and look at 125 grey .    50 NR and 50 detail seems to work.  To me,  if I start with a clean image,  there is less noise after the push.

 

The Nikon D750 which is a decent low light camera,  responds well to iso 1600 and a two stop push to 6000.  Same NR before push.

 

I think things might be improved if I did NR separately on RGB layers in PS and then went back to ACR as a smart object for the push.  

 

Experiment as you have time.

You could also try using the luminosity channel in LAB. RGB channels conflate luminosity with colour information.

Share this post


Link to post
Share on other sites

You could also try using the luminosity channel in LAB. RGB channels conflate luminosity with colour information.

 

I will give it a try.

Share this post


Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...

  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By onasj
      I obtained a customer-release—not pre-release/beta—M10-R and compared it side-by-side with the M10 Monochrom (hereafter referred to as the M10-M) on a test scene at high ISO values.  The firmware version for both was the latest firmware currently available to the public: 10.20.27.20 for the M10-R (upgraded from the initial released 10.20.23.49 firmware that was pre-installed in the new camera), and 2.12.8.0 for the M10-M. 
      Methodology: all shots were taken on a tripod with a 2-second delay to minimize vibration.  The same Leica 50 APO lens was used for all tests.  The aperture was set to f/5.6 for all tests, at which the resolving power of the 50 APO is about as high as possible among commercially available 35-mm format lenses.  The ISO value and shutter speeds were as follows:
      ISO 6400, 1/60 s
      ISO 12500, 1/125 s
      ISO 25000, 1/250 s
      ISO 50000, 1/500 s
      ISO 100000 (M10-M only), 1/1000 s
      To the best of my ability, the M10-R and the M10-M were treated equally.  The test shots were taken in one sitting, with the same tripod position 2.2 m from the target, and under the same lighting.  The images were focused by rangefinder and confirmed by live view for each camera.  The subject distance (2.2 m) was farther from the test scene than my earlier M10-R tests (1.3 m) because I anticipated that the M10-M might have no trouble resolving all the details of the scene from 1.3 m, even at absurdly high ISOs.
      To keep the test as pure as possible, all the test shots were taken as DNG files, then transferred and opened in Adobe Photoshop 2020 with Camera Raw 12.3 (which has native M10-R support) with no corrections or adjustments to the default image settings, other than clicking “B&W” to convert the M10-R images to monochrome.  Therefore, this test does not really answer the question of how the performance between the cameras compares if one were to bring the full power of modern post-processing, noise removal, AI-driven scaling and sharpening, etc. to bear on the images.  It also does not exploit the important ability of adjusting the levels of different colors when converting color files to monochrome files—arguably the largest advantage of using the M10-R to generate monochrome photos instead of the M10-M.  Instead, the purpose of this test is to compare the acuity and noise level of the two cameras at ISO 6400 to ISO 50000.
      Overall, both cameras take remarkably good monochrome photos, even at ISO levels such as 12500 that would previously be considered out-of-reach.  Here are 100% crops from a small portion of the center region of both cameras (M10-R on the left, M10-M on the right).  Click on the image below to view it at 100% to avoid scaling artifacts.  I would have no hesitation using ISO 12500 monochrome images from either camera for virtually any application.  But of course there are substantial performance differences.

      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden! Finding #1: The M10-M captures higher acuity levels than the M10-R across the ISO range tested (6400 to 50000).
      As expected, given the lack of a Bayer color filter array (CFA) and no need to de-mosaic the red-, green-, or blue-filtered pixels, the M10-M offers significantly higher acuity than the M10-R.  To my eye, the advantage persists even if you give the M10-R an advantage of one or two stops: compare the sharpness of the fine features of the scene as captured by the M10-M at ISO 25000 vs. the M10-R at ISO 6400, or the M10-R at ISO 25000 to the M10-M at ISO 100000—a remarkable testament to the M10-M’s ability to capture a scene down to the smallest details, even zooming in to 100%.  Notice also that at the same ISO level, aperture, and shutter speed (chosen by each camera’s auto-shutter speed setting to be the same at all ISO levels!), the M10-M images are only modestly brighter than the M10-R; I was surprised that the Bayer CFA didn’t dim the M10-R images more strongly.  Perhaps the M10-R firmware partially compensates for the loss of light due to the Bayer CFA.
      Finding #2: The M10-M offers about a 1- to 2-stop advantage in high-ISO noise levels over the M10-R.
      Compare the M10-M at ISO 50000 to the M10-R at ISO 12500, or the M10-M at ISO 25000 to the M10-R at ISO 6400. The M10-M continues to blow me away with its high-ISO performance.  Indeed, Bill Claff’s measurements at https://photonstophotos.net/Charts/PDR.htm rank the M10-M’s high ISO performance as fourth among all cameras tested to date, behind the Phase One IQ4, the Phase One IQ3, and the Fuji GFX-100—three current or recent top-of-the-line medium format cameras.
      Overall, Leica has created in the M10-M and the M10-R two current-generation sister cameras with outstanding overall performance.  If acuity or high-ISO performance is more important than color for your particular application, than the M10-M outperforms the M10-R and is among the very best cameras to my knowledge, even joining some medium-format monsters.  And if color is needed, either in the final image or to enable creative conversion to black and white images that allows easy sky darkening, face lightening, etc. during post-processing, the M10-R remains an option worthy of its current flagship status among Leica M cameras.
    • By Ian clegg
      First time post, be gentle. 
      I want to bring my raw files from Monochrom into silver efex. SEP. But it will only accept RGB. Will this lead to loss of quality ? When I scan my black and white negs I do so in greyscale and that’s  perfect for printing to black and white paper at Metro. 
      It seems to defeat the object of the Monochrom if I have to convert to RGB ?
      Am I missing a trick ? What say you ?
    • By Johnclare369
      Hi.
      I can't find exactly this problem reported here, so apologies if it's here somewhere. 
      During the lockdown I've been trying different kinds of home-based photography. Yesterday I was playing around with high-speed shots, dropping ice and strawberries into coloured water, that kind of thing.  I've just opened the images in LR and in PS and found there is a small line across the images when shooting at ISO higher than 640.
      Is it some kind of banding?  I don't know the ISO level where it starts to appear, I would have to do more tests to determine the tipping point. However, it's not there at 640 and is there at 1600 and above. See three attached images. Same lens and body, ISOs 640, 3200 and 4000. Shutter speed 1/4000 on all three. Apertures from f4 to f6.8. 
      Of course I am assuming it is to do with the ISO, not the f-stop.
      I was shooting on high speed shutter, so maybe something to do with the heat generated or recycling time?
      Lens is APO-Summicron-M f2. 90mm.
      Camera body Leica M10. No flash.  Remote cable release for high-speed shutter.
      Any thoughts appreciated.
       
       
       

      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
    • By Yeedah
      Hi!
      I recently purchased a used Leica Q manufactured early 2018. 
      When I try shooting in night, both "low iso + long exposure", and "high iso + short exposure" captured in DNG file shows annoying banding, and even some unwanted color points, like the images shown below.
      Is this a native camera issue? Or this camera sensor is defected : (
       
       

      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
      Hello guest! Please register or sign in to view the hidden content. Hallo Gast! Du willst die Bilder sehen? Einfach registrieren oder anmelden!
×
×
  • Create New...

Important Information

By using this site, you agree to our Terms of Use. We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue., Read more about our Privacy Policy