# 30 Jun, 2020 09:28
Does the sensor IR cut window make much sense if you have an IR cut (L) filter in front of your camera?
# 30 Jun, 2020 10:43
|Well, it still keeps dust from entering your sensor chamber, and if your camera is cooled it stops (to a certain degree) moist air from producing ice on your sensor and electronics. But apart from that, optically it should not have much effect, only slightly increasing the backfocus.|
# 30 Jun, 2020 10:56
I kind of ruined the IR window of my 178MC (long embarassing story) and since I already have a 178MM and am waiting for the LRGB filter set, I figured I could just use the L for both cameras and save some money.
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