Folks here have really seemed to enjoy some of the photos I've posted that were taken with these filters, which are designed to somewhat emulate Kodak Aerochrome false color infrared slide film.
They've got the regular ones 20% off and the b-stock ones 30% currently, so folks might be interested.
IMPORTANT NOTES:
- You need a full-spectrum camera to use these. It's not super hard to find a cheap old camera on eBay that someone's converted, or you can spend a couple hundred bucks to have some convert your camera, or you can do it yourself if you're DIY enough.
- Straight out of camera, the colors may not be that fun. Depending on the particular camera used, often the results are much more orange than the stereotypical pink/magenta that I associate with the Aerochrome look. It's not hard to shift the colors to look like whatever you want, but there is an important caveat that if there is stuff in the frame that has a lot of visible orange, you'll need to do some degree of local masking if you want that to look natural. Not an issue in landscape settings usually, but traffic cones and unstained wood fences can be a pain.