mobeyone Posted January 28, 2011 Share #1 Posted January 28, 2011 Advertisement (gone after registration) How much is accepted or acceptable? I am finding a lot of purple in low light... yes a UVIR is on and in the camera. Link to post Share on other sites More sharing options...
Advertisement Posted January 28, 2011 Posted January 28, 2011 Hi mobeyone, Take a look here Purple... I'm sure you'll find what you were looking for!
Luke_Miller Posted January 28, 2011 Share #2 Posted January 28, 2011 Which image(s) in your gallery show the problem? The one obvious one is the girl with a blue highlight on her head from a moniter behind her. Link to post Share on other sites More sharing options...
jaapv Posted January 28, 2011 Share #3 Posted January 28, 2011 Show us some - it may well be a simple white balance thing in postprocessing. Link to post Share on other sites More sharing options...
mobeyone Posted January 28, 2011 Author Share #4 Posted January 28, 2011 Not uploaded any yet, but the purple is very clear under light and when used on dark surfaces..... Did not expect it to be this bad... I'll post a photo asap. Link to post Share on other sites More sharing options...
ho_co Posted January 28, 2011 Share #5 Posted January 28, 2011 ... yes a UVIR is on and in the camera. Just for clarification, you're referring to a UV/IR-Cut (extinction) filter and not an absorption filter, right? Link to post Share on other sites More sharing options...
mobeyone Posted January 28, 2011 Author Share #6 Posted January 28, 2011 Just for clarification, you're referring to a UV/IR-Cut (extinction) filter and not an absorption filter, right? Yes! Leica UVIR filter! Here are some examples. L1001769 | Flickr - Photo Sharing! L1001935 | Flickr - Photo Sharing! L1001830 | Flickr - Photo Sharing! I do tend to find the purple more apparent from the light in the kitchen as you can see in the third photo.. that said I have several others where the purple is creeping onto the face and the edges of furniture.. Camera has a new sensor! Link to post Share on other sites More sharing options...
Luke_Miller Posted January 28, 2011 Share #7 Posted January 28, 2011 Advertisement (gone after registration) I believe what you are seeing is the result of mixed lighting. Part of the scene is illuminated by possibly a fluorescent light while another by tungsten. Under that set of circumstances there is not a single white balance value that will produce accurate color across the entire image. All cameras will show this issue. Link to post Share on other sites More sharing options...
mmk60 Posted January 28, 2011 Share #8 Posted January 28, 2011 I think that Luke is right. OP - how did you white balance the shots? Link to post Share on other sites More sharing options...
CharlesL Posted January 29, 2011 Share #9 Posted January 29, 2011 I put the second of the three photos into Picture Window Pro's auto color balance transformation. I added a gray point by selecting a point on the paper on the counter. The result was quite natural, removing most of the purple cast Lately I set the camera to a Kelvin setting for white balance, choosing the temperature by a rough guess of where the light is on a blue-yellow (technically, blue-red) line. Probably fooling myself, but it seems easier to correct these RAW files than to correct images shot on the other M8 menu choices. Link to post Share on other sites More sharing options...
adan Posted January 29, 2011 Share #10 Posted January 29, 2011 The picture of the woman and baby is mixed lighting, and you'll have to choose between a purple kitchen or green people. (or do some photoshop work to correct the two areas separately) The other two look to me like simply incorrect WB - they are purple (or red) everywhere, whites, grays, blacks. Are you depending on the camera's auto white balance? Or actually setting WB yourself in the computer afterwards? Link to post Share on other sites More sharing options...
lct Posted January 29, 2011 Share #11 Posted January 29, 2011 ...The other two look to me like simply incorrect WB... Agree but remains too much red saturation with WB correction imho. Link to post Share on other sites More sharing options...
mobeyone Posted January 29, 2011 Author Share #12 Posted January 29, 2011 Thanks everyone and yes, manual white balance. Tried it again on auto and the purple was not there. How do you manage this when shooting into different light points? Link to post Share on other sites More sharing options...
Mikael Siirilä Posted January 29, 2011 Share #13 Posted January 29, 2011 Are there "energy saving" lights in the scenes? Some energy saving light bulbs give off a crazy spectrum that is nearly unfixable. All colors are screwed up whatever sensor or filters you have. Link to post Share on other sites More sharing options...
mobeyone Posted January 30, 2011 Author Share #14 Posted January 30, 2011 Are there "energy saving" lights in the scenes? Some energy saving light bulbs give off a crazy spectrum that is nearly unfixable. All colors are screwed up whatever sensor or filters you have. Certainly are, hate the light they give and I think there are at least two different wattage/types in the room. Link to post Share on other sites More sharing options...
pklein Posted January 31, 2011 Share #15 Posted January 31, 2011 I predict that as these energy saving bulbs become more widespread, there will be a rennaisance of black-and-white photography. Link to post Share on other sites More sharing options...
Nicoleica Posted January 31, 2011 Share #16 Posted January 31, 2011 I predict that as these energy saving bulbs become more widespread, there will be a rennaisance of black-and-white photography. Or maybe cyanotypes? Link to post Share on other sites More sharing options...
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