Yeah, I meant taking and viewing lens.
I just loaded up a few rolls of Aviphot 200 onto my hacked out 127 reels. I have no AC in my darkroom and it's located in the attic. Not fun.
Make one or two Venturi 'windows' for box fans, out of PVC pipes, wall board and pipe line reducers that are 50% smaller at the exit port than the fan breeze inlets.
It might take a small bit of effort but even with the fan(s) on low, the air forced through the window will be at least ten degrees Fahrenheit (10°f) lower, which should help you to remain somewhat cooler in your work space.
Furthermore, to draw the heat up and out of the attic, you can also make a attic solar chimney by way of metal or plywood construction of an attic mounted, non fire, chimney and a hose or pipe that can bring up cool airs from your lowest room or basement, into the attic proper and let the heat rise up through the chimney, by convection.
Many years ago, I owned a
{moderator's deletion of politically inflammatory label} house, that was fairly large, but had been designed with natural convections that would keep it cool and breezy on the hottest day in the southern most N.C. & S.C. border county.
You'll be very surprised how well natural convection air flows work, and, with the Venturi but x fans, it should really help out on the hot attic days.
Cheers