The a7RIV has 16-shot pixel shift technology. Fuji has said that they will be bringing that capability to the GFX 100 in a future firmware update. These events have rekindled the fires of discussion of that fifteen-or twenty-year-old scheme, specifically about how much the resolution of the system is increased. I am about to wax… [Read More]
Nikon 500/5.6 PF, 180-400/4 on Z7, revisited
Here’s another try at an informal test of the Nikon 500mm f/5.6 phase Fresnel lens compared to the Nikon 180-400mm f/4 zoom. Here’s the scene with both lenses, with the zoom set to 500mm by switching in the built in teleconverter and setting the lens to 360 mm.. I made the shots at sunrise to… [Read More]
Nikon 500/5.6 PF, 180-400/4 on Z7
Here’s another informal test of the Nikon 500mm f/5.6 phase Fresnel lens. This time I compared it to the excellent Nikon 180-400mm f/4 zoom. There are two problems with this test, but I’m publishing it anyway. Here’s the scene with both lenses, with the zoom set to 500mm by switching in the built in teleconverter… [Read More]
Nikon 500/5.6 PF on Nikon Z7
Here’s an informal test of the Nikon 500 mm f/5.6 phase Fresnel lens on a Nikon Z7. Here’s the scene, with the blooming bay tree target about 30 meters away: Note the minimal illumination falloff. Making three shots for each variation and picking the sharpest, I exposed at base ISO 100 for both cameras. I… [Read More]
Fuji 50/3.5 on GFX100, Sigma 35/1.2 on a7RIV
It’s a nice still morning, so I thought I’d test the new Fuji 50 mm f/3.5 on some foliage. For comparison, I chose the excellent Sigma 35 mm f/1.2 Art lens on a Sony a7RIV. Here’s the scene: Making three shots for each variation and picking the sharpest, I exposed at base ISO 100… [Read More]
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