So for the record, the Canon EF 16-35mm 2.8 L II USM Wide Angle is not compatible with R72 type infrared filters.) For photographers who do this type of photography, I found a site that tells you exactly if your lens is compatible with this type of filter. https://cldphoto.com/canon_IR.h...

Not suitable for IR:
(hot spot)

Canon EF 15mm f/2.8 fisheye *
Canon EF 16-35mm f/2.8 L #
Canon EF-S 18-55mm f/3.5-5.6
Canon EF 20mm f/2.8
Canon EF 20-35mm f/3.5-4.5 USM
Canon EF 24-85mm f/3.5-4.5
Canon EF 28-70mm f/2.8 L
Canon EF 28-105mm f/3.5-4.5
Canon EF 35mm f/2
Canon EF 35-80mm f/4-5.6
Canon EF 50mm f/1.4
Canon EF 50mm f/2.5 Macro
Canon EF 70-200mm f/2.8 L IS
Canon EF 70-300mm f/4.5-5.6 DO
Canon EF 85mm f/1.8

Sigma 10-20mm f/4.0-5.6 EX DC HSM
Sigma 30mm f/1.4
Sigma 17-70mm f/2.8-4.5
Sigma 18-50mm f/2.8 EX
Tamron 17-35mm
Tamron 18-200mm f/3.5-6.3 AF XR (IF) Di-II
Tamron 19-35mm
Tamron 70-300mm Macro
Tokina 12-24mm< f/4.0/font>
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Suitable for IR:
(no/minimal hot spot)

Canon EF-S 10-22mm f/3.5-4.5
Canon EF 17-40mm f/4 L
Canon EF-S 17-85 f/4-5.6 IS USM
Canon EF 22-55mm f/4-5.6 USM
Canon TS-E 24mm f/3.5L
Canon EF 24-70mm f/2.8 L
Canon EF 28-135mm/3.5-5.6 IS
Canon EF 28mm f/2.8
Canon EF 50mm f/1.8 MKI
Canon EF 50mm f/1.8 MKII
Canon EF 70-200mm f/4 L
Canon EF 70-300mm f/4-5.6 IS
Canon EF 75-300mm f/4-5.6 IS
Canon EF 100-400mm f/4-5.6 L IS
Canon EF 100mm f/2.8 Macro
Canon EF 135mm f/2 L

MTO 500mm f/8
Peleng 8mm fisheye
Phoenix 100mm f/3.5 macro
Vivitar 24mm f/2.8 MF
Sigma 12-24 mm f/4.5-5.6 EX
Sigma 18-50 mm f/3.5-5.6 DC
Sigma 55-200 mm f/4.0.5.6 DC
Sigma 105mm f/2.8 EX DG macro
Sigma 400mm f/5.6
Tamron 28-300mm XR

I tested it on a 35-105 Sigma and on a 24 Nikkor. It works but the exposure time is min 1 to 2 seconds if you want a little bit of depth of field