Hoya 77mm R72 Infrared Filter

No, the Hoya 77mm R72 Infrared Filter (B&H# HOIR7277) will not fit directly on a Nikon 18-55mm DX VR lens. Nikon has made many lenses of that description, and they require different sizes of filters. Some of them accept a 52mm filter, while others require a 55mm filter. Please see the number on the front of the lens next to the symbol that looks like a circle with a slash going through it. That is the correct filter size for your lens. If the number on your lens is 52 (i.e. 52mm) then the right size filter is the Hoya 52mm R72 Infrared Filter (B&H# HOIR7252): https://bhpho.to/39ZGP24 However, if that number is 55 (i.e. 55mm) then the filter you'll want is the Hoya 55mm R72 Infrared Filter (B&H# HOIR7255): https://bhpho.to/2Vv5c5qHowever, if that number is 55 (i.e. 55mm) then the filter you'll want is the Hoya 55mm R72 Infrared Filter (B&H# HOIR7255): https://bhpho.to/2Vv5c5q

While you can use an infrared filter to photograph snow, snow will still appear white. One issue with photographing in snowy conditions is the sky is normally overcast with clouds. The strongest infrared images tend to occur on clear, sunny days and with lots of foliage in the scene (foliage which is usually absent in the winter). That being said, if you capture images in the snow on a clear, sunny day and there are evergreen trees/bushes or other plants/trees that still have visible leaves that reflect infrared lighting, you would get dramatic images in these circumstances. Typically, when using the R72 infrared filter, the blue color of the sky will be darkened, while green foliage, like trees and grass, will appear in snow-like tones.

A RAW color image shot with an infrared filter will produce a yellow/red image with blue foliage.

Neither the Canon EOS 5D Mark II nor the FUJIFILM X-T4 Mirrorless Camera have a specified spectral sensitivity from the manufacturer. That being said, this can be used with either camera, though you will need to use longer exposure times. For better IR sensitivity you would need to have the camera sensors modified. In terms of fitting on a lens, this will depend on the specific lens you are using.

Since I am not a Canon shooter, I can't test either your 70D or lenses. Some lenses create "hot spots" when shooting in infrared especially when stopping down or when using a filter that filters most of the visible light (for example 830 range). After a little research from several infrared conversion companies, your 10-18mm should be ok. I don't have any data for the 100-400mm. No one knows what causes the "hot spots" that are usually located in the center of the frame. Some think that they are caused by either internal reflections within the lens or between the lens elements. You could always try the filter with your body and lenses. Return the filter if it is creating hot spots for you. Happy shooting!

The Hoya 77mm R72 Infrared Filter might work for capturing video of an IR Laser. Best is to contact the manufacture of the laser to discuss the wavelengths of the laser and if it will work like that.

The Hoya 77mm R72 Infrared Filter is not designed for solar photography. Instead, get the MrStarGuy Thread-In Natural-Light Solar Filter (77mm), BH #STSG77MMSOLY.

Yes, the Hoya 77mm R72 Infrared Filter can work on a Hasselblad 500 C/M. But the lens needs to take a 77mm size filter. And results will vary depending on the film you are using.