Infrared 590nm + R72 filter – Cranford, NJ

I have an Olympus E-M5 Mk1 that I had modified back 3-4 years ago by LifePixel to have a 590nm (Super Color) IR Filter. At the time, I had an unmodified, identical body, so it made sense to have two bodies exactly the same except one was IR and one was unmodified.

The camera has served me well and I recently wanted to shoot it in pure black-and-white, vs. a Super Color image where I had to process it afterwards by swapping the R/B channels and tweaking the color channels to extract as much color information as possible. I had a couple of old R72/720nm filters, 67mm and 55mm that I got step down rings for. Now I could use those filters on my most used lenses: 12-40/2.8 Pro, 12-50/3.5-5.6, 12/2.0 Super-Wide, and Laowa 7mm/2.0 Ultra-Wide.

I’ve shot the camera with the R72 for a couple of months and really like it. The only issue that I had was that the 7.5mm lens really doesn’t focus IR light like visible. It’s a huge difference, in fact. The lens is a MF lens only. So what I’ve learned to do is to check focus with the 14x magnifier before I take photos. The lens’ sweet spot is f/8 or f/11, which is where I usually shoot it. F/16 and F/22 have serious diffraction issues.

Some recent pictures with the 7.5mm lens.

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