89B filter

[Jeff Kubach]

A while back I bought 89B filter(77MM) for my RB67. It is so dark I can't hardly see through it. Is this considered normal? BTW the filter wasn't cheap.

Jeff

[ntenny]

Yes. Hold it to a bright light and you'll see some red, but for practical purposes the filter should be opaque. And no, they're not cheap.

-NT

[Jeff Kubach]

Thanks for the info!

Jeff

[mhcfires]

The filter is, for all practical purposes, opaque. they work best with a rangefinder camera. I feel that they are pretty much useless on an SLR camera, you just can't see what you are shooting.

[Jeff Kubach]

I know what you mean, I usually take it off and focus and put it back on. Kind of pain in the neck, but I like it.

Jeff

[Роберт]

Yes, both 89B (695nm) or 88A (715nm) are "Black" IR filters. Best chance on a R.F. camera. I am using it (88A) on my C.V. Bessa III 667 R.F.

[ntenny]

they work best with a rangefinder camera.

That's a funny way to spell "TLR". :-)

I've never shot IR with an SLR, but I know people who do, and the workflow seems like a sort of "LF-lite": tripod mount, compose and focus, put the filter on, and then shoot. I suppose one could do the hyperfocal thing as well, or even just scale-focus given a sufficiently wide lens for that to be reasonable.

-NT