RD Gray Periscope No. 3 ?

[LF4Fun]

does anybody have any info on this little guy? focal length? coverage?
It has aperture disc but no flank. The only thread I found in LFF is regarding No.6, mine is No. 3

thank you
Dave

[Louis Pacilla]

It has aperture disc but no flank.
thank you
Dave

Hey Dave.

Not sure what you mean by "flank".

Did you mean "flange"?

Just so ya know

A flange is attached to a lens board with screws. Then the lens barrel is attached to the flange.




.

[goamules]

http://www.largeformatphotography.in...read.php?83276
http://www.largeformatphotography.in...read.php?33336

RD Gray made what I've found to be very nice WA lenses in the 1880s-1890s. Their EXtreme Wide Angle is very nice. Sample shots in one of the links above.

[LF4Fun]

thanks guys.
Louis, yes, that's what I meant.
is there anyway to mount this on a shutter?

Dave

[Louis Pacilla]

thanks guys.
Louis, yes, that's what I meant.
is there anyway to mount this on a shutter?

Dave

Yea you could front mount to a shutter but why? This type of lens is best used stopped down so most times your exposure times will be 1-5 sec. You can just use your lens cap.

You could front mount the lens to a shutter like a Ilex #4 but you will need an adapter made as there are NO direct fits.

You could also use a Packard as a shutter option.