trouble processing Infrared Red Image

pwynn-mackenzie

pwynn-mackenzie

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Paul
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Hi there, went had my first go at using the IR filter on my camera but when i got home and tried to follow a guide to the post processing for IR it just seemed to sort of fail :( . So it would be great if someone could possibly have a go at quickly processing this image to get that awesome IR look :)

5480945663_ab6da24b30_b.jpg
 
Both shots look seriously under- exposed for a kick off, can you post versions with the EXIF data intact?
 
well heres the exif data for the first one:

Exposure 115
Aperture f/7.1
Focal Length 20 mm
ISO Speed 100

and second one:

Exposure 65
Aperture f/7.1
Focal Length 18 mm
ISO Speed 200

I agree they look very underexposed, im just trying to work out IR out the mo, as something a bit different to do now and again, so i guess i should use longer exposure and higher ISO
 
Here are a couple of straight out the camera shots ( first test shots with a converted Fuji S5700) take a few seconds apart, the only variation in this case was the shutter speed....

1/80

DSCF4065.jpg


1/6 (obviously far too slow for handheld, but the shot illustrates my point)

DSCF4066.jpg
 
Exposure tends to be an issue with IR as camera meters don't see ir properly, I found bright sunny days worked best (and some trial and error) I had a quick go using the red chanel from both images.

5481687122_9e6a9e8269_b.jpg



5481686952_b01a15b1bd_b.jpg
 
Infra red works best when handled as a monochrome image. You are only getting data into the red channel, so the green and blue are a bit superfluous.

As Wayne has stated exposure metering is a bit difficult, so bracketing may be an idea. You could try setting picture style to B&W and see if this helps when viewing the cameras screen ( Don't know if the Sony has this feature ) .

Shooting Infra Red in the days of film you were best off using very sunny days, overcast conditions tended to significantly reduce the amount of Infra Red available . I suspect it's much the same with digital. At least nowadays you can get some idea of exposure with the camera's histogram, in the "old days" you didn't know until you processed the film
 
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