Fuji 250 f5.6 soft?

[John Conway]

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.

[brianjnelson]

Yes

[John Conway]

OK...so no disc , no diffusion . Thanks .

[Ken Lee]

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.

[mdarnton]

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.

[John Conway]

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.

Thanks Ken. The Fuji SF lens does give a very nice softness.

[John Conway]

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.

Thanks for the very informative reply.

[AtlantaTerry]

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.

[Jim Jones]

We can replace the glass from a cheap filter with a disk perforated somewhat like the original disks.

[Louis Pacilla]

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.

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