Re: Digital SLR for Electron microscope?

virginia writes:

Actually, I tried to use my point and shoot camera as it has a manual
function, but the slowest speed was 2" and it wasn't enough. The
fastest scan speed for my SEM is 50 s. That is one of the reasons I
wanted an SLR, they normally have a bulb function so you can expose as
long as you want.
I am also only getting the shutter image, but I suppose this has to do
with aperture and focusing distance. The setup was optimised for a
120mm film camera.

This is not difficult with an off-the-shelf SLR. I am certain it would
work with any Canon EF-S mount digital SLR plus the Canon EF-S 60mm F/2.8
Macro USM lens (and a neutral density filter to adjust exposure). That
particular lens lets you take a full-frame shot of anything down to macro
1X, which is to say, as small as 22mm x 15mm, or anything larger. Standard
exposures go to 30 sec and "bulb" mode opens forever. The ND filter keeps
you from overexposing since you don't want to use the f-stop for that if
you can help it. The only difficult part is the mechanical mounting.
.