[LRflex] Re: bonehead extension tube question (can't afford a 14182)
- From: "David Young" <telyt@xxxxxxxxx>
- To: leicareflex@xxxxxxxxxxxxx
- Date: Fri, 02 Sep 2005 16:09:07 -0700
On 02/09/2005 at 2:58 PM Peter M. C. Choy wrote:
>Can anyone confirm that
>the 3-ring extension tube set for
>Leicaflex can be used on the 400mm/f6.8
>Telyt? I'd like to try reducing
>minimum focus and increase image area
>for long-distance close-ups of small
>critters.
Hi Peter!
If you are an LHSA member, check The Viewfinder, Vol 37, Number 3 (Fall,=
2004), Page 38. You can see a photo of the 28mm Super Angulon-PC taken=
with the 400mm Telyt and this set of tubes. Working distance was about 13=
feet! And, yes, I used the mirror pre-fire. It definitely works very well!
You can also use a 2x converter to get closer,(effectively double the focal=
length but same close focus distance) but there is distinctly noticeable=
vignetting with the original, non-APO converter. The newest APO extender=
does not suffer this problem. There are also the problems of holding an=
800mm f12.6 lens steady and a reduction in resolving power.
Go to: http://www3.telus.net/~telyt/images/pictures/heron72-650.jpg for a=
shot taken with the 400 f6.8 Telyt and the earlier, non-APO 2x converter=
and you'll see the vignetting I'm talking about.
The tubes are a better choice.
Cheers!
David Young,
Logan Lake, BC
CANADA.
Personal Web-site at: http://www3.telus.net/~telyt
Leica Reflex Forum web-page: http://www3.telus.net/~telyt/lrflex.htm
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