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KBeezie's avatar

Up the Hill, with the Moon at Top.

By KBeezie
9 Favourites
6 Comments
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:iconmyartismine:

An infrared shot with faux color pulled from the raw file. Camera is a converted infrared camera, 590nm light red on the sensor, and a B+W 092 Deep red added to the lens to narrow the infrared range down to 695nm (visible light ends at 700nm, and continues as infrared from there).

Blue sky created by swapping the red/blue channel and tweaking the hue.

It is a composite (multiple images put together), so it is capable of printing to 32 x 32 inches. 

Image details
Image size
1920x1920px 2.23 MB
Make
OLYMPUS IMAGING CORP.
Model
E-M1
Shutter Speed
1/125 second
Aperture
F/5.6
Focal Length
20 mm
ISO Speed
100
Date Taken
May 3, 2017, 6:07:48 PM
Sensor Size
7mm
Published:
Comments6
anonymous's avatar
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robpolder's avatar
nice (multiple) shot! like the colours! cheers, rob
KBeezie's avatar
Thanks. :D If you're curious, the original raw colors out of the camera looked like this (*80 to *85 were the components used above) i.imgur.com/uI8DTMn.png

You almost never get a blue sky on an infrared converted camera, so channel swapping is usually required (or some really funky hue changes), the problem is, I want to try to get it as close to 'natural' as possible while still being surreal in appearance. But least it gives you an idea of what it comes out of the camera as. (The Jpeg copy is closer to a blue as the in-camera jpeg can save closer to the actual white balance when set custom against either grass or a grey card, but you lose obvious finer details). 
robpolder's avatar
thanks! i'm not into channel swapping (i use 'room, not 'shop..). i found some interesting possibilities in full spectrum shots for blue skies with weird colours elsewhere. cheers, rob
KBeezie's avatar
LifePixel has a "Super blue Infrared" filter (Both external and internal), basically it's a dual-pass filter, it passes both UV light and IR light, but not visible light, the UV gives it the blue. Lightroom can do the same thing, just via the HSL panel under develop. 
robpolder's avatar
thx again. maybe i should try the dual-pass option. cheers!
KBeezie's avatar
The seller uviroptics on ebay sells a number of UV-pass and IR-pass (as well as dual/triple band pass) filters of various Schott brand glass and such for what seems to be a better price than what some of the IR conversion sites offer. Mainly if you're looking for the kind to screw onto the front of a full spectrum camera. 

You basically want something that shows sensitive at 400nm and below (UV), and 700nm and above (Infrared), 400 to 700 is the visible range. The listings on uviroptics' ebay page shows a transmittance chart for most of the listings. 

This blog entry was pretty nice in illustrating some of those less common filters that you can stack to get the most options from fewer filters (like putting a common UV(0) protective filter on a dual-pass one to get just IR when you want it)  www.photoir.net/minimum-filter…
anonymous's avatar
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