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You could back Prince up in purple rain with that second shotOk, here is an example so you can see what is going on...at least if you were to take a picture of yourself in my bathroom, which I am not sure I would be comfortable with. The lighting is mostly halogen.
Both photos have the exact same white balance, plus .5ev and +1 black clipping in ACR. I then took those two photos and converted them to black and white by converting them to LAB and using the luminance channel (this should eliminate any influence of the channel mixer).
None of the photos have been optimized, this is just out of the camera other than what I mentioned. You can see that the M8 has a bit of an IR problem! I picked one up at photo plus when it was released and the first photo I took, I was immediately like, excuse me? I am absolutely astonished that they did not think people would notice (and care) about this. They obviously have (had?) some serious issues with understanding their market.
Anyway, the images. The jacket should be black, along with the bag. They are two different synthetic materials. The sweater should be brown. I should be white.
with filter
without filter
Black and white with filter
Black and white without filter.
In this case, I prefer the photo without the filter, but as Erik mentioned, I would rather have the option to have it either color or black and white, so I almost always leave the filters on unless I have to shoot with bright light sources in the frame. The other issue is that while sometimes it may look better without the filter, it is generally unpredictable -- it can do weird things with the tonality and with complexions.
HI MikeHmmm...
I am trying to decide which set of disadvantages to accept.
With IR filter
- Very slightly lower contrast (probably only a "theoretical" difference)
- Potential trouble with bright light sources causing reflections
Without IR filter
- Color file would require a lot of work (I am ok with B&W only)
- Focus shift
What else am I missing?
Nasty Nasty . . . but easier to clone out than nasty veins in faces (of course, being a spring chicken you won't care how oldies look, but we 50 somethings are desperately vain:ROTFL:The last time I had it happen, I was photographing a musician at a bar, and there were some candles behind him that caused UFO's in the head of one of the people in the audience.
Having worked beta testing Kodak firmware for the 14n and SLR/n, and their 'Italian Flag' problems with different lenses, I wonder if you're right about this - there may be a way around it, but for a camera where you aren't able to know which lens is attached I think it could be a pretty fundamental problem. The Kodak problem was partly cured in firmware, but it was only because you knew which lens you had attached, and you needed a different correction for each lens.Overall, they should just put a damn IR filter on the sensor like every other camera. I know it is a technical issue due to the film to flange distance being close and the off-axis light, but it is surely not an insurmountable technical problem. We've landed men on the moon after all...this can't be that hard.
Sounds reasonable, of course, being young and smart, you won't make those nasty mistakes (taking off the filter and forgetting to change the menu . . . putting it on and forgetting to change it back!).Anyway, the example I posted above IS obvious, but I am exaggerating it -- under halogen lighting wearing a synthetic jacket. I used the same white balance as the IR filtered shot, but I could surely tweak it a bit to make it look less magenta, but as Jono said, these files are fundamentally uncorrectable. The IR reflection does not act evenly on all materials, so there is no way to correct for it without throwing everything else out of whack.
So my basic pattern is always use the IR filters except when photographing at night.