Sensitivity: As you'd expect from an IR-conversion, the camera is very sensitive to infrared. Exposure time is pretty close to normal photography.
Auto exposure: Exposure is consistently off by about 1 stop, which can be easily corrected using exposure compensation. Dynamic range appears less than for visible-light photography, so highlights are unlikely to be clipped when using auto exposure (assuming RAW-mode).
Resolution: Since green and blue sensors are fairly insensitive to infrared, most detail in infrared photography comes from the red channel - reducing resolution by a third or so. Nevertheless, there seems to be plenty of detail in the images I captured, at least when compared to the Ricoh GX100 I was using previously.
White Balance: As is normal for infrared photography, use of auto exposure results in very red images. Custom white balance works well, leading to largely greyscale images.
Lenses: Canon 50mm f/1.8 and Canon 100mm f/2.8 both work well, with no hotspots. Sigma's 30mm f/1.4 also gives nice images, although does produce very mild hotspots for some apertures. I'll be giving these, and other lenses, a more thorough seeing to in the (hopefully) near future.
Below are some sample images:
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| Sigma 30mm @ f7.1 |
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| Sigma 30mm @ f2 |
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| Canon 50mm @ f/2.5 |
Does that mean you have 2 400Ds now?
ReplyDeleteYou can never have too much of a good thing. Well, unless it's cheese, in which case you become enormous.
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