Richard, Rand, David and others.
I have done some extreme mag photography with those macro lenses as
well. On the bellows the 20mm goes to 16x magnification. And yes, I
have a Gossen cold light source (halogen light and built-in flash with
three flexible fiber guides) which is very useful indeed when the
subject-to-lens distance gets very small.
I also use it when taking pictures through my stereo-microscope.
This Gossen unit is the one that I want to enhance by giving it TTL
capability.
I haven't decided yet how to perform, but I have two options. Either I
can try to connect the built-in flashtube to the Olympus macro flash
power source, or I can take an old T32 apart, mount the bare flashtube
in the Gossen, next to the original one, and keep the rest of the T-32
elsewhere to connect to the camera. I think I will choose the last
option - because in that case I am sure that flashtube and electronics
perfectly match.
Frank.
On Thu, 26 Mar 1998 07:17:58 -0800, "Rand E. Tomcala"
<rtomcala@xxxxxxxxxxx> wrote:
>Richard,
> I use mine (20 & 38) for pictures of coins, some at extreme mag (ie
>full frame = 2 1/2 digits on US penny). I also use T10 Ringlight. At
>extreme mag it is really tough getting light on subject at all, much
>less from desired angle.
> Has anybody done anything with fibreoptics ?
>Rand E.
><><><><><><><><><><>
>>Richard Dale wrote:
>>
>> Does anyone have any experience of using these for extreme magnification.
>> What working distance do they offer, do they produce good results, is there
>> room to put a ring flash on the front or would you need a T28 (or similar).
>> Thanks
>> Richard
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