Posted by Kent on October 28, 2000 at 10:21:08:
In Reply to: Bellows extension? posted by Alec on October 27, 2000 at 17:03:13:Help me with the extension issue.
Assuming the Mini Speed Graphic has the same
bellows extension as the Century 2 x 3 Speed
and with a max extension of only 150 mm, how
could the 8" tele-Optar, which requires 180mm
extension, achieve focus? What does "short
bellows draw" mean? And won't the amt of bellows
rqd differ as a function of the distance from lens
to object? When I focus at infinity with my
current 101mm (standard) lens I need much less
draw than when I focus on an object at 4 ft.
__________________
Alec wrote:
The limit of bellows draw is around 150mm for a non-telephoto lens.
The 8" Tele Optar telephoto is a true telephoto, which means that
even with its 203mm focal length, it has a short bellows draw of
180mm."
: So, it seems a 250mm would be even longer, right? Furthermore, the rangefinder won't focus beyoud 135mm.
: Might as well end with some good news. If you solve the extension problem, there is a focusing scale for that lens. Look for scale # 30881-32.
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