Overview. We’ve had this Alpha a7R III modified for IR photography by the good people at Kolari Vision. The low-pass filter was removed and replaced with an internal 850nm infrared filter. Instead of capturing three different colors of visible light, the camera now sees three different wavelengths in the near-infrared spectrum.

Normal Use. You use an IR-modified camera just as you would a normal camera: autofocus works, live view works, and in-camera metering works. Exposure times are similar to a normal camera when shooting in sunny conditions where IR light is abundant. Try to shoot under indoor artificial lighting (not really any IR light there) and you’re going to need a tripod. Note: you may see front or back-focusing using autofocus under some lighting conditions.

This Thing is Different. For those of you who aren’t familiar with IR photography, the look is very different. You’ll want to read up on shooting in IR and the post-processing required for the images.

850nm Produces B&W Images. This conversion is for dedicated black and white capture. No visible light gets to the sensor. If you’re looking to do some false-color IR photography, 850nm is the wrong choice.

Anti-Reflective Coating. Applied to the IR filter, this special coating is centered in the infrared band to helps alleviate reflections/hotspots. Is it a cure-all for those pesky IR hotspots with some lenses? No, but it does help to greatly minimize them.