John Bealon Jun 05
I guess that it depends on the filter in use. mine is a 720nm, which is near infrared and lets a bit of visible light in. as a result, auto WB yields a strong magenta cast. w/ a manual WB, it's a mild, rust cast - almost sepia toned mono.
Meffordon Jun 04
John, The 828 does have manual white balance. However, I usually shoot in RAW and adjust WB in post. As such, I usually leave WB on auto. I would also be interested to see how it would interpret a green WB setting; I will check that next time. Thanks!
John Bealon Jun 04
Mark, does the f828 have a manual white balance setting? you can get rid of the color cast by setting w/b while the IR filter is attached. you'll be left with a rust colored cast instead of the magenta, which is easily handled by swapping the red and blue channels. set the w/b by pointing at a major cluster of green (e.g., leaves, grass). I'm not sure what you'd get instead of the green cast, but it would be interesting to see.
KurtPrestonon Jun 01
The level of detail was fine :) I thought at first it was one of those converted cameras that smugmug Andy referred to in a dgrin thread. Been thinking about adding one to my 'wishlist' as I'm very interested in IR shots.
TomLon May 29
i'm totally IR stoopid, so keep hammering; maybe someday......
sherstone.comon May 29
certainly not more than I wanted to know.. very interesting Thanks Mark
Meffordon May 29
Kurt, I had to stack 3 filters for this shot; the last filter blocks the edge of the frame at the lens's widest setting.
On the sony 828 you can do IR two ways. First is in nightshot mode. You have to stack neutral density filters on top of the IR filter because sony makes the fastest shutter speed in nightshot mode 1/30. Without the filters everything would be washed out. The other way is to standard (non-nightshot) mode with an IR filter only. This calls for 1 sec + speeds (with apeture wide open). This pic was in nightshot mode and therefore required all the filters (IR, 8xnd, 4xnd).
Probably more than you wanted to know; thanks for commenting.
KurtPrestonon May 29
Very nice! I even kinda like the green tone. Is the darkening at the corners normal for IR cameras?
Meffordon May 29
IR on this camera leaves a strong green cast; I took a lot of it out in a hue/saturation adjustment layer. I worked on 5-6 IR shots in a row and your eyes get used to the cast. Thanks for your comments!
The Curious Camel aka gailon May 29
what Thusie said