pr28893 Posted September 22, 2011 Share #1 Posted September 22, 2011 Advertisement (gone after registration) I bought an M8 in Geneva a few days ago from a Leica dealer who told me it had just come back from Leica and was perfect. I wasn't able to test the camera and have two questions about the sensor and photos. The first photo (and every image) shows what look like water drops in the top left corner and several other places on the photo. Is this a flaw with the sensor or the result of someone not cleaning properly? The second are the rather strange blue and red pattern on the railings on the large boat. I have to say I wasn't using an IR filter but wouldn't have thought that missing would have this affect. I would be grateful of any ideas you may have. Peter 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/162498-m8-sensor/?do=findComment&comment=1800159'>More sharing options...
Advertisement Posted September 22, 2011 Posted September 22, 2011 Hi pr28893, Take a look here M8 sensor. I'm sure you'll find what you were looking for!
NikonJeff Posted September 23, 2011 Share #2 Posted September 23, 2011 The spots are definitely dust or something like a water mark on the "sensor" since they're in both frames in exactly the same place - just clean it with an Artic butterfly or a wet method like sensor swabs. I haven't been shooting my M8 long enough to have seen the image issue from the 2nd photo but I'm willing to bet its an IR issue or lens related. Link to post Share on other sites More sharing options...
mjh Posted September 23, 2011 Share #3 Posted September 23, 2011 The first photo (and every image) shows what look like water drops in the top left corner and several other places on the photo. That’s dust (or whatever) on the sensor; cleaning the sensor will get rid of it (see the numerous threads on the best methods for cleaning the sensor). The second are the rather strange blue and red pattern on the railings on the large boat. That’s moiré. Given that the M8 (like most Leica cameras) does without an antialiasing filter so as not to compromise resolution, some moiré is inevitable even when the internal image processing tries its best to remove or avoid it. Capture One is quite successful in removing moiré in raw files. More on the subject of moiré and its causes in my article in LFI 6/2011. Link to post Share on other sites More sharing options...
pr28893 Posted September 23, 2011 Author Share #4 Posted September 23, 2011 Thanks for your comments. I think it is odd that the M8 was meant to have been checked over by Leica recently. Anyway, now that I have checked through my photos I found this one which I was just testing my focusing abilities on the post which shows up a lot of dust. There is so much do you think it is worth having it done professionally this time? I also own a Ricoh GXR M mount (this camera also doesn't have a antialiasing filter) which I had with me and handled the moire much better. Maybe they do some on board processing of dng files before writing them to the card. I hadn't intended to buy an M8 when I travelled to Geneva but what a pleasure it is to use. The colour is just amazing. I had a 35mm biogon with me but will take out my 50mm summicron tomorrow. Thanks again. 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/162498-m8-sensor/?do=findComment&comment=1800191'>More sharing options...
Jeff S Posted September 23, 2011 Share #5 Posted September 23, 2011 There is so much do you think it is worth having it done professionally this time? Easy to do yourself. As Michael said, there are dozens of threads on this issue via the search box. This M9 FAQ also applies to many issues with the M8, including dust, moire and lots more. In the meantime, before you get around to sensor cleaning, the spots can be easily removed using software tools in CS or LR. Jeff Link to post Share on other sites More sharing options...
jaapv Posted September 23, 2011 Share #6 Posted September 23, 2011 What raw converter do you use? Aperture by any chance? C1 or ACR (Lightroom and CS5) have better anti-moirė cOntrols. It is not just the AA filter that stops moirė, a softer lens has less chance of producing it. Link to post Share on other sites More sharing options...
pr28893 Posted September 23, 2011 Author Share #7 Posted September 23, 2011 Advertisement (gone after registration) I am using Lightroom 3. As I have never had Moire problems before I not sure how to remove it. I also have Photoshop. Link to post Share on other sites More sharing options...
jaapv Posted September 23, 2011 Share #8 Posted September 23, 2011 http://www.l-camera-forum.com/leica-forum/leica-m9-forum/130720-m9-faqs-frequently-asked-questions-answers-2.html#post1585125 http://www.l-camera-forum.com/leica-forum/leica-m9-forum/130720-m9-faqs-frequently-asked-questions-answers.html#post1585114 Link to post Share on other sites More sharing options...
pr28893 Posted September 23, 2011 Author Share #9 Posted September 23, 2011 Thanks Jaap The links were very useful I have decided to have the Leica store in London clean the sensor this one time. If they cant clean it I will send the camera back to Geneva. I am hoping the messy images are just down to a sensor that needs a good clean and nothing else. Peter Link to post Share on other sites More sharing options...
mjh Posted September 23, 2011 Share #10 Posted September 23, 2011 Sooner or later you will have to learn to clean the sensor yourself, I’m afraid. Link to post Share on other sites More sharing options...
pr28893 Posted September 23, 2011 Author Share #11 Posted September 23, 2011 I agree Michael, but as the M8 has a 3 month warrantee I want to make sure someone experienced does the first clean just in case the sensor does have a fault. I am raring to go with this camera. I am totally amazed at the quality of the images compared to the Nikon system I had. Link to post Share on other sites More sharing options...
ErikP Posted September 25, 2011 Share #12 Posted September 25, 2011 I agree Michael, but as the M8 has a 3 month warrantee I want to make sure someone experienced does the first clean just in case the sensor does have a fault. I am raring to go with this camera. I am totally amazed at the quality of the images compared to the Nikon system I had. You might want to consider the lens.as the possible source for the dots. Regards Erik Link to post Share on other sites More sharing options...
jaapv Posted September 25, 2011 Share #13 Posted September 25, 2011 It has been reported but is very rare. 99.9 % of spots like that are sensor dust. See the M9 FAQ. Link to post Share on other sites More sharing options...
pr28893 Posted September 25, 2011 Author Share #14 Posted September 25, 2011 Thanks Erik and Jaap The spots appear whichever lens I used so I think it is what you say Jaap. I am just being neurotic! The camera was such a bargain. From a Leica dealer I paid £700 (Sfr960). The body is in immaculate condition and only shot 3300 frames. I had only just bought a Ricoh GXR M mount so hand't planned to get the Leia body. The M-mount is also fabulous and I think the Leica and GXR will be a nice pair. Link to post Share on other sites More sharing options...
jaapv Posted September 25, 2011 Share #15 Posted September 25, 2011 http://www.l-camera-forum.com/leica-forum/leica-m9-forum/130720-m9-faqs-frequently-asked-questions-answers.html#post1382788 Link to post Share on other sites More sharing options...
pr28893 Posted September 25, 2011 Author Share #16 Posted September 25, 2011 Thanks Jaap I did a test shot as e have a clear sky in London and I think it is pretty conclusive that the problem is just dust. Peter 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/162498-m8-sensor/?do=findComment&comment=1801953'>More sharing options...
pr28893 Posted September 25, 2011 Author Share #17 Posted September 25, 2011 One last thing. I realise this is a little off topic. I put my 15mm Voigtlander Heliar on to the M8 (with no IR filter) and walked around my local park. To my eye there doesn't seem to be any cyan cast and little vignetting. Is this typical? The photo is a little over exposes which may make a difference I suppose. 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/162498-m8-sensor/?do=findComment&comment=1801990'>More sharing options...
Clook Posted September 25, 2011 Share #18 Posted September 25, 2011 Hi Peter, Your choice of subject matter in this instance, does not really show the cyan cast. I can perhaps see a little vignetting on the corners which I think may have more to do with the coding of the lens (unless of course you have addressed that issue). If you try shooting a subject wearing synthetic black clothing you will see the cyan cast. Also skin tones can look a bit off especially in artifical or low light. All is fine however if you convert to B&W. Link to post Share on other sites More sharing options...
gravastar Posted September 25, 2011 Share #19 Posted September 25, 2011 What indicates that it's dust is the spots become sharper as the lens is stopped down. They are much more diffuse in the picture taken when it was cloudy compared to the one taken when the sun was out. Bob. Link to post Share on other sites More sharing options...
Shade Posted September 26, 2011 Share #20 Posted September 26, 2011 Looks like dust. Regarding the cyan cast, only visible on black materials. Link to post Share on other sites More sharing options...
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