siulonbow Posted September 29, 2009 Share #1 Posted September 29, 2009 Advertisement (gone after registration) Hi all, I have borrowed a M8 from my uncle, and I am not very impressed with the pictures that I have taken. I have seen a lot of great photos on this forum. Can you please take a look at my pictures and let me know what did I do wrong? I am wearing a black t-shirt, but turns out to be purple. Is it the setting that I did wrong? Lens used: 28mm 2.8f Leitz pic info. Shutter speed : .18s ISO : 640 Picture setting: ISO : Auto ISO EV : -1/3 White balance : Auto Compression : DNG Menu setting is as follow: lens Detection : On + UV/IR Auto ISO Setup : 1/30 / 640 Sharpening : standard Color Saturation : Standard Contrast : Standard Monitor Brightness : standard Histogram : RGB with clipping Auto Slow Sync : Off (1/250) 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/98460-question-with-pic-i-took-with-the-m8/?do=findComment&comment=1054186'>More sharing options...
Advertisement Posted September 29, 2009 Posted September 29, 2009 Hi siulonbow, Take a look here Question with pic I took with the M8. I'm sure you'll find what you were looking for!
Nicoleica Posted September 29, 2009 Share #2 Posted September 29, 2009 This may be a silly question, but did you actually have a UV/IR-cut filter on the lens? This colour change is a classic example of not using one. Link to post Share on other sites More sharing options...
stunsworth Posted September 29, 2009 Share #3 Posted September 29, 2009 You need to use a UV.IR cut filter and the issue will disappear. Either a Leica filter or a B+W 486 filter will do. At 28mm you really need to have the lens coded if it hasn't been already, and set the camera to recognise that a coded lens and a UV/IR cut filter is being used. Link to post Share on other sites More sharing options...
siulonbow Posted September 29, 2009 Author Share #4 Posted September 29, 2009 In front of the lens, there is a UV-A lens cover. Is that the UV-IR that you are talking about? If it's not, where can i obtain one? Should I always keep the setting for the lens detection at On + UV/IR? Thanks Link to post Share on other sites More sharing options...
stunsworth Posted September 29, 2009 Share #5 Posted September 29, 2009 That's the wrong filter. You need a UV/IR cut filter or a B+W 486 filter. Your Leica dealer should be able to help, or you could buy one online. If the lens is coded the lens detection on + filter should be used. Link to post Share on other sites More sharing options...
siulonbow Posted September 29, 2009 Author Share #6 Posted September 29, 2009 What is the difference between a UV/IR and B+W? Does B+W mean black and white? When you mentioned about getting the 28mm lens coded, do you mean adding a filter in front? Link to post Share on other sites More sharing options...
stunsworth Posted September 29, 2009 Share #7 Posted September 29, 2009 Advertisement (gone after registration) B+W are a maker of filters. Their 486 filter is the equivalent to Leica UV/IR cut filter. The lens coding consists of 6 milled pits on the rear of the lens. Each pit is painted either black or white, and each lens model has it's own combination of black and white pits. This allows the M8 to identify the lens that's mounted. Leica will take an uncoded lens and code it for you - at a cost of course. If you use a filter on an uncoded 28mm lens the result is likely to be a colour cast towards the edges of the frame. With a coded lens the camera knows how to correct this cast and give a neutral image. The wider the lens the stronger the colour cast, hence the need for the camera to know what lens is mounted in order to give a neutral image. Link to post Share on other sites More sharing options...
digger1914 Posted September 29, 2009 Share #8 Posted September 29, 2009 BW is a company that manufactures filters Schneider Optics These filters absorb Infra Red light, and you need them on the front of lenses (35mm and less I think) to avoid the situation you encountered in your shot. If you buy a new M8 from Leica they throw in 2 of their IR filters. You need to make sure that any filters you get are the correct size for your lenses. Then turn on the option yu saw on the menu that tells the camera you have a IR filter in place Link to post Share on other sites More sharing options...
Nicoleica Posted September 29, 2009 Share #9 Posted September 29, 2009 B+W is the filter manufacturers name. Leica, B+W and other manufacturers all make UV/IR-cut filters. The B+W code for this filter is 486. A normal UV or skylight filter won't block the IR light that is causing the colour changes. As for coding, this refers to the 6-bit code markings on the lens mount that inform the camera about which lens is mounted. They look similar to a 'bar code'. If you have this coding on your lens, then, with the camera set to detect lenses, it will automatically make adjustments to the photographs to suit that particular lens. If the lens is not coded, then the camera can't do this. Link to post Share on other sites More sharing options...
bill Posted September 29, 2009 Share #10 Posted September 29, 2009 This may be an even sillier question, but has your uncle been using the camera and lenses without filtration or coding? Regards, Bill Link to post Share on other sites More sharing options...
danyves Posted September 29, 2009 Share #11 Posted September 29, 2009 This may be an even sillier question, but has your uncle been using the camera and lenses without filtration or coding? Regards, Bill I wanted to ask Link to post Share on other sites More sharing options...
siulonbow Posted September 29, 2009 Author Share #12 Posted September 29, 2009 I don't really know what he has been using for his camera. He showed me 40+ Leica lenses, and I remember the were able to detect one of his 16-18-22mm lenses. I guess he might have coding for that lens. However, for the one that I have borrowed, I don't think they have coding because I was not able to detect the lens. Please explain how to find out where to look for the coding. Thanks Link to post Share on other sites More sharing options...
bill Posted September 29, 2009 Share #13 Posted September 29, 2009 Steve has already provided that information: The lens coding consists of 6 milled pits on the rear of the lens. Each pit is painted either black or white, and each lens model has it's own combination of black and white pits. This allows the M8 to identify the lens that's mounted. Regards, Bill Link to post Share on other sites More sharing options...
siulonbow Posted September 29, 2009 Author Share #14 Posted September 29, 2009 Thanks Bill. I read what Steve has wrote but don't exactly know how to find the pits. I wondered if I can use the camera lens detection menu to see if I have the coding? Link to post Share on other sites More sharing options...
Nicoleica Posted September 29, 2009 Share #15 Posted September 29, 2009 Thanks Bill. I read what Steve has wrote but don't exactly know how to find the pits. I wondered if I can use the camera lens detection menu to see if I have the coding? The 6 bit coding can be seen on the back of the lens as per fig 1.11 in the below picture. These codes are read by the sensor shown as fig 1.10 on the body mount. Hope this helps. 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/98460-question-with-pic-i-took-with-the-m8/?do=findComment&comment=1054957'>More sharing options...
siulonbow Posted September 29, 2009 Author Share #16 Posted September 29, 2009 Thanks for the picture. I wondered if I have to code my lenses to be able to get the natural color like what other poster have posted? Are there other ways to go around it to get the natural color? Link to post Share on other sites More sharing options...
pklein Posted September 30, 2009 Share #17 Posted September 30, 2009 The lens coding tells the camera how to compensate for a color shift towards cyan in the corners of the frame, which occurs mostly with wide-angle lenses when you use the UV/IR cut filters. The wider the lens, the more cyan shift. It is necessary for lenses 28mm and wider (shorter). For 35mm, it is nice to have, but not absolutely necessary, as the shift isn't always noticeable. For 50mm and longer lenses, it really isn't necessary. The lens coding and the UV/IR cut filters are two separate things. Many of us haven't bothered to code our lenses of 50mm and longer, and take perfectly good color pictures. But without the UV/IR cut filters, you will get black clothing turning purple, and green foliage in sunlight color-shifting towards yellow. You absolutely need the filters to get accurate color with the M8 under all conditions. Link to post Share on other sites More sharing options...
TimF Posted September 30, 2009 Share #18 Posted September 30, 2009 I wanted to ask This may be an even sillier question, but has your uncle been using the camera and lenses without filtration or coding? Regards, Bill If he has, maybe it never showed up. That's entirely possible under many circumstances, which is why the problem presumably wasn't picked up during the beta testing (unless the reader is a conspiracy theorist of course, but we don't want that can of worms picked over again, purlease!) Link to post Share on other sites More sharing options...
jsrockit Posted October 1, 2009 Share #19 Posted October 1, 2009 Forgive my ignorance. You buy a camera that costs anywhere from $2500 used to $5999 new and you cannot even use it to make a simple photo indoors without buying extra filters. What am I missing? Link to post Share on other sites More sharing options...
Nicoleica Posted October 1, 2009 Share #20 Posted October 1, 2009 ......... but we don't want that can of worms picked over again, purlease!) Oops! Too late I fear. The annelids have escaped the container. Link to post Share on other sites More sharing options...
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