I put a B+W 830 nm lowpass filter on my LifePixel-modified (720 nm option) GFX 50R and checked for hot spots on distant scenery with a +100 contrast boost. Well, that’s encouraging. How about with the Fujifilm 1.4x telextender? Not good at all. Hotspots at every… [Read More]
Leica 280/4 Apo-Telyt R on GFX 50R in infrared
The Fuji 250 mm f/4 G-mount lens doesn’t hotspot with a 720 nm conversion down to f/22. It does hotspot with the Fuji 1.4x teleconverter at f/11 and beyond. That’s a good choice for IR photography at 250 and 350 mm, but I wanted to try something else. Using a Kipon adapter, I mounted a… [Read More]
CO 60/4 UV-VIR-IR on IR-modified GFX 50R
A reader recommended the Schneider F-mount 60 and 80 mm lenses that are specified for 400 nm to 1000 nm light, and offer a 60 mm image circle, which would cover the GFX sensor with 5 mm to spare. The 60 mm lens runs about $1300 at B&H. I’m not in the market for it,… [Read More]
Infrared hotspotting
Yesterday, I received a Fujifilm GFX 50R back from LifePixel, who had modified it with a 720 nm infrared conversion. The modification consists of the removal of the IR-blocking filter — aka hot mirror — and its replacement by a filter that blocks visible light and passes infrared light with wavelengths shorter than about 720… [Read More]
Full frame fisheye on GFX 50R, Z7
Someone asked me if I knew of a full frame fisheye for the GFX. That would be about an 11 mm fisheye. I didn’t know of one, but I do have a Nikon 8-15 mm f/3.5-4.5E zoom fisheye. I mounted it to the GFX 50R with a Kipon F-to-G adapter, and set it to the… [Read More]
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