Looking back at the details for my test shots, the full spectrum (unfiltered) image had a shutter speed of 1/210s, while the Zomei 760nm filtered image was 1/40s (all other exposure settings remained the same). So that is about a 2 1/3 stop reduction in light.

Hi Geoff

Apologies for the late reply. I think the Zomei filters should work fine with that combo.

My personal preference for camera conversion is always full spectrum, simply because then you’re only limited by what filters you want to use. So in the future if you wanted to try a lower filter, such as 500nm or a UV pass then you can.
But of course a camera converted with a specific filter has it benefits as well, since to use it at whatever the base is (590nm in your case) then you don’t need to mess around with adding a filter to the lens. Changing lenses you don’t need to change the filter. And lenses with no filter threads will still be filtered. And you can still add higher cut filters like you suggest for different effects.

So there’s pros and cons to either approach with the camera conversion. But regarding the Zomei filters, so long as you’re working with a converted camera, then I think you’ll be fine.

Dave

Hi Justin
Here’s an example image taken with a Lee Light Red filter, which is hopefully quite similar to your camera.
All I did was white balance it, then swap the red and blue channels:

With a 720nm filter I get the same result but less colour.
If you have an image taken with your camera you can share, I can try processing it and see if I get the same result as you or not. Or I’m happy to email you a copy of the image above if you want to try processing it with your workflow and see if you get the same result as me. That would at least narrow down whether it’s the processing or the original capture causing the problem.

Hi Christopher

Apologies for the rather delayed reply. The Zomei filters do pass some visible light, so may not be suitable for your purposes. I’d suggest looking at the Lee #87 polyester filter – it’s only rated for 730 nm but does a better job in my experience of only letting through IR light than the Zomei filters. Plus it’s cheaper.

Kind regards

Dave

Hi Paul

I didn’t even know Haida made IR filters. Their ND filters have a good reputation, so I’d expect their IR filters to be good quality, but can’t say for sure.

Dave