Guest BigSplash Posted July 19, 2009 Share #1 Posted July 19, 2009 Advertisement (gone after registration) Below is a photo that I took with a 50mm Noctilux (f1) ...the BBQ coals look to be white hot but they actually were orange.... > Is this the famous IR issue that I am seeing? > The lens did not have a UV IR filter because I so far have not loacted a 58mm UV IR filter..if anyone knows where I can get this device I'd appreciate. > Can photoshop correct this type of flaw? Thanks for any help 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! Quote 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/91128-m8-infra-red-issue/?do=findComment&comment=966765'>More sharing options...
Advertisement Posted July 19, 2009 Posted July 19, 2009 Hi Guest BigSplash, Take a look here M8 Infra Red Issue. I'm sure you'll find what you were looking for!
pop Posted July 19, 2009 Share #2 Posted July 19, 2009 Cheaper digital cameras and camera phones have less effective filters and can "see" intense near-infrared, appearing as a bright purple-white color. sic taken from Wikipedia. This about seems to cover your case. Quote Link to post Share on other sites More sharing options...
mjh Posted July 19, 2009 Share #3 Posted July 19, 2009 Below is a photo that I took with a 50mm Noctilux (f1) ...the BBQ coals look to be white hot but they actually were orange....> Is this the famous IR issue that I am seeing? Yes, you are. The coals are radiating visible (yellow to red) light, but even more light in the near and far infrared range – in other words, they are red hot. The M8 is sensitive to light in the near infrared range of wavelengths, resulting in the purplish color. The coals are white only where infrared and visible light combined are bright enough to overexpose the sensor. Quote Link to post Share on other sites More sharing options...
andybarton Posted July 19, 2009 Share #4 Posted July 19, 2009 Photoshop cannot correct this. You need to use the IR filter. Do a search on here, and you will find thousands of threads relating to the IR problem. The correct filter solves the problem. I wouldn't normally do this but none of our sponsors seem to stock them http://www.popflash.com/index.php?p=product&id=1918&parent=0 Quote Link to post Share on other sites More sharing options...
Guest BigSplash Posted July 19, 2009 Share #5 Posted July 19, 2009 Photoshop cannot correct this. You need to use the IR filter. Do a search on here, and you will find thousands of threads relating to the IR problem. The correct filter solves the problem. I wouldn't normally do this but none of our sponsors seem to stock them B+W 58MM UV/IR CUT Many thanks to all of the above for their feedback. Andy thanks ...I shall now go off and buy the filter........At 183€ and 116€ they are not cheap ! Thanks for pointing me in the right direction as I have looked on Google and not found the item. regards Quote Link to post Share on other sites More sharing options...
bybrett Posted July 19, 2009 Share #6 Posted July 19, 2009 Very interesting explanation, here's one I took a couple of years ago without the filter, always wondered what was going on here. 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! Quote 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/91128-m8-infra-red-issue/?do=findComment&comment=966817'>More sharing options...
Guest BigSplash Posted July 19, 2009 Share #7 Posted July 19, 2009 Advertisement (gone after registration) Very interesting explanation, here's one I took a couple of years ago without the filter, always wondered what was going on here. Brett here in the S.France they think of English cuisine as HP sauce, greasy chips, and mushy peas......I think your BBQ looks delicious! Lovely photo. What lens did you use and what aperture ...Thanks! Quote Link to post Share on other sites More sharing options...
bybrett Posted July 19, 2009 Share #8 Posted July 19, 2009 Brett here in the S.France they think of English cuisine as HP sauce, greasy chips, and mushy peas......I think your BBQ looks delicious! Lovely photo. What lens did you use and what aperture ...Thanks! Frank, thanks, it's a scene from Istanbul...! 75mm f2 M8 Quote Link to post Share on other sites More sharing options...
SJP Posted July 19, 2009 Share #9 Posted July 19, 2009 Brett here in the S.France they think of English cuisine as HP sauce, greasy chips, and mushy peas......I think your BBQ looks delicious! Lovely photo.I will dig around for a fun example of IR and the M8 and post here. But meanwhile I would like to object to the "English cuisine" categorisation. Properly cooked English food can be (and is) just as good as classical French cuisine - think roast beef, lamb, cod, pike, salmon, pies, puddings, dumplings/stew, stilton etc. This is basic rural kichen and is pretty much the same everywhere where the only key element is "properly cooked" and fresh ingredients. C'est tout. I have had plenty of gourmet friends visiting us that claimed to dislike English food & changed their mind. Making nouvelle cuisine like variations on UK food is easy enough - just reduce the size of the portions & add some decorative elements. Quote Link to post Share on other sites More sharing options...
andybarton Posted July 19, 2009 Share #10 Posted July 19, 2009 Thanks for pointing me in the right direction as I have looked on Google and not found the item. No problem. This is what I googled "Leica UV/IR 58mm" leica UV/IR 58mm - Google Search Quote Link to post Share on other sites More sharing options...
andybarton Posted July 19, 2009 Share #11 Posted July 19, 2009 Properly cooked English food can be (and is) just as good as classical French cuisine - think roast beef, lamb, cod, pike, salmon, pies, puddings, dumplings/stew, stilton etc. Pike? Hands up if you've ever eaten pike I've eaten all the rest, but never pike. I've never even seen it offered in a restaurant or market, either. Perhaps I go to all the wrong places Quote Link to post Share on other sites More sharing options...
Guest BigSplash Posted July 19, 2009 Share #12 Posted July 19, 2009 Photoshop cannot correct this. You need to use the IR filter. Do a search on here, and you will find thousands of threads relating to the IR problem. The correct filter solves the problem. I wouldn't normally do this but none of our sponsors seem to stock them B+W 58MM UV/IR CUT I actually have a spare 55 and 60mm UV IR Leica Filter ....does anyone know where I can get a 58mm to 60mm (or 55mm if this is not losing anything) stepping adapter ring? Thanks Quote Link to post Share on other sites More sharing options...
SJP Posted July 19, 2009 Share #13 Posted July 19, 2009 Pike? Hands up if you've ever eaten pike I've eaten all the rest, but never pike. I've never even seen it offered in a restaurant or market, either. Perhaps I go to all the wrong places I recall eating pike in the Lake district once - but that was a long time ago. Not a common fish for cooking but it can be very good, pike-perch is also excellent or perhaps better. Quote Link to post Share on other sites More sharing options...
Guest BigSplash Posted July 19, 2009 Share #14 Posted July 19, 2009 I will dig around for a fun example of IR and the M8 and post here. But meanwhile I would like to object to the "English cuisine" categorisation. Properly cooked English food can be (and is) just as good as classical French cuisine - think roast beef, lamb, cod, pike, salmon, pies, puddings, dumplings/stew, stilton etc. This is basic rural kichen and is pretty much the same everywhere where the only key element is "properly cooked" and fresh ingredients. C'est tout. I have had plenty of gourmet friends visiting us that claimed to dislike English food & changed their mind. Making nouvelle cuisine like variations on UK food is easy enough - just reduce the size of the portions & add some decorative elements. I never had any doubts about British cooking ... > Think Beef Wellington (The French love it I believe, although probably do not appreciate the history behind this great dish) > Think Roast Beef with its marble texture (not available in France at all) > Think Welsh Lamb Chops....more fat on it for the BBQ compared to French cuts, and then add mint sauce. Still the good news is that I have noticed that the French are starting to drive on the correct side of the road and are already half way through the conversion process. Quote Link to post Share on other sites More sharing options...
Nicoleica Posted July 19, 2009 Share #15 Posted July 19, 2009 Pike? Hands up if you've ever eaten pike I've eaten all the rest, but never pike. I've never even seen it offered in a restaurant or market, either. Perhaps I go to all the wrong places I've never encountered Pike on a menu either. However, there are a lot of pike recipes around. For example Baked Pike With Mushroom Sauce Recipe | Food | Channel4.com (I've known people to gnaw on the toothpick, but never to eat a whole Pike. ) Quote Link to post Share on other sites More sharing options...
andybarton Posted July 19, 2009 Share #16 Posted July 19, 2009 I actually have a spare 55 and 60mm UV IR Leica Filter ....does anyone know where I can get a 58mm to 60mm (or 55mm if this is not losing anything) stepping adapter ring?Thanks If you were to use a step-up/down, how would the lens hood fit? I don't own a Noctilux, so cannot tell from experience. Quote Link to post Share on other sites More sharing options...
dcoombs Posted July 19, 2009 Share #17 Posted July 19, 2009 Pike? Hands up if you've ever eaten pike I've eaten all the rest, but never pike. I've never even seen it offered in a restaurant or market, either. Perhaps I go to all the wrong places Absolutely! But we caught it ourselves (Northern Michigan/Ontario area or out west). It's a great game fish, one of best as it fights hard and has very sharp teeth. It's tasty but full of bones, so wouldn't be a restaurant favorite. Too many customers would choke to death...giving the restaurant a bad rep and all. Cheers, Doug Quote Link to post Share on other sites More sharing options...
dcoombs Posted July 19, 2009 Share #18 Posted July 19, 2009 Sorry, Frank. We wandered way off topic. Now back to the IR issue!.... Quote Link to post Share on other sites More sharing options...
Guest BigSplash Posted July 19, 2009 Share #19 Posted July 19, 2009 If you were to use a step-up/down, how would the lens hood fit? I don't own a Noctilux, so cannot tell from experience. I did not think of this....the answer is that it would not fit. I rarely use the lens hood however when using the Noctilux in low light conditions and I have not seen any reflected light issues as a result. Anyhow I guess I need to buy the 58mm filter at 115$ rather than an adapter which I guess would be 50$ if I can find one. Andy the Noctiflex (and I have the old one) is an unbelievable lens to use with just a candle as lighting or some light source of that type.... Quote Link to post Share on other sites More sharing options...
andybarton Posted July 19, 2009 Share #20 Posted July 19, 2009 Andy the Noctiflex (and I have the old one) is an unbelievable lens to use with just a candle as lighting or some light source of that type.... That bit I do know I have used one a couple of times, but never felt the need to sell a kidney. Quote Link to post Share on other sites More sharing options...
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