Posted by Gerald Pierce on October 28, 2000 at 13:15:25:
In Reply to: Re: Long focus lens requires larger studio posted by Les on October 28, 2000 at 12:00:01:Hi, gang!
I have that 10" Tele-optar lens on a Horseman VHR. If I set the
lens at infinity on the Horseman and put it side by side with a
mini Speed, it looks like the mini's front standard would have to
be placed very near the very front of the rails to focus that lens
at infinity. There would about two inches inches that the rail
could move forward for closer focusing, if you strain. It wouldn't
be very practical. Why not a nice 150mm or 180mm?
FWIW,
Gerald
: At this point I believe that the lens would fit the camera, but remember that this lens will give a 2.5 x enlgargement to your image.
: If for example, you set your subject up with a normal lens
(101mm) and you have a nice bust shot
: where the head is 3/4" long on the neg. With this lens, the head
will be nearly 2" long (1 7/8")
: I don't have my lens formulas handy right now but I suspect the reverse is true. If you use the 101 lens for the same head and shoulders shot and stand X feet away, I think to duplicate the same image with the 10" you'll need to be 2.5x farther back.
: This is really mixing apples and oranges to a degree, because you wouldn't use these two lenses for the same application.
: Another thing to consider is that the mini speed did not use
folding stops. If you want to focus this 10" or the 8" you'll have
to:
: 1. release the arms that lock the bed down (they just snap, no
tools)
: 2. Drop the bed.
: 3. bring the front standard out and hook on the front of the bed
: 4. re attach the arms.
:
: On the 8 inch lens you MAY be able to set it to the stops of the
normal lens and just rack it out to get it to focus, on the 10"
there's just not enough track for it to focus on anything but
infinity if that. In either case you'll be Ground glass
focusing.
: Or the other option is to set the stops and the rangfinder for the 8" and then ground glass the normal lens. At least this way you won't have to pull the bellows out and around. ( I Don't think you can set the rangfinder for the 10" on the Mini)