Is the Fuji 250 soft 5.6 lens a type of soft lens that needs discs to control various levels of diffusion? I see it for sale with a disc and without.
Is the Fuji 250 soft 5.6 lens a type of soft lens that needs discs to control various levels of diffusion? I see it for sale with a disc and without.
Yes
OK...so no disc , no diffusion . Thanks .
The Fujinon SFS gives lovely soft focus without the disk. The disks allow you to create additional, special effects.
I use a 180 SFS and do not have any disks. See this page for a few sample images, made with the lens stopped down a small amount.
The diffusion part of things comes from the perimeter of the lens. As you stop down, cutting off the perimeter, you lose the diffusion, and it turns into a normally-sharp lens. What to do if you need to stop down for the light, and for depth of field, yet keep the diffusion, then? Slip on a disk, which has a central opening for effective aperture to cut down some of the light, and a bunch of holes around the edge, to let through some of the diffusion at the same time, for the best of both worlds.
I wonder if someone had a CNC machine if they could make a set of disks for the OP? Heck, for anyone needing a set.
We can replace the glass from a cheap filter with a disk perforated somewhat like the original disks.
Mid-West photo supply had/has at least one of the two strainers for Fujinon 250 SF lens. Not sure if they have the red dot but they at the least have the yellow.
http://mpex.com/fuji-250soft-focus-disc-yell.html
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