Buying large format lenses... (Newby question)

[Jim Noel]

These home-made spanner wrenches are better than any factory-made spanner wrenches I've used. Adjustable by screwing the angled screws in and out, very solid, and lots of leverage in an easy-to-hold mount. Inexpensive too!

Angled screws are a great idea.

[Maris Rusis]

I use a right-angle needle-nosed pliers that I've ground the tips even finer on. Works well on any shutter ring up to a no.3. Make sure you remove both front and rear lens elements before attempting to remove the ring - one slip might scratch and ruin the optics themselves!

Good advice indeed. And because I get paranoid about exerting significant force near a shutter I fire it on T to get the shutter blades out of the way. Then I open the iris fully to get those delicate blades out of the way too. Now if I slip there's only a clear hole in the middle of the shutter and nothing to break.

[B.S.Kumar]

Toyo spanner wrenches fit Copal / Seiko #0, Copal #1 and Seiko #1 shutters. Copal #1 and Seiko #1 shutters have different sizes. #3 shutters are not supported.

Kumar