Hello Piers,
I'm very intrigued by the possibility of getting more depth of field from a
macro lens. I was wondering if you could show us some photos of your
creation, and some examples of photos you've made with it? Also, what brand
cctv lenses did you use?
Thanks, Darin
----- Original Message -----
From: "Piers Hemy" <piers@xxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Saturday, September 10, 2005 9:28 AM
Subject: [OM] Re: OM macro lenses?
>
> Well now, how about searching for a little on-topic balance here!
>
> I have the 20/3.5 - it was going cheap, was in mint condition, and who can
> resist a bargain?
>
> As a macro lens it does precisely what it is designed to do - 4x to 12x
> life
> size - with the limitations inherent, lack of illumination, lack of depth
> of
> field, lack of working distance to subject. Not what you want for
> shooting
> live insects!
>
> I was looking again at Bjørn Rørslett's fascinating site (very much worth
> looking at), and found what he does with this type of macro lens, to
> completely avoid the limitations:
> http://www.naturfotograf.com/roll_your_own_lens.html
>
> I mounted the 20/3.5 on the 65-116 tube (bellows would have been OK), then
> mounted a CCTV lens on the front of the 20/3.5. The engineering involved
> consisted of a sharp knife, some 35mm film canisters and Scotch tape. I
> bought two new CCTV lenses for less than USD20 - one is 4mm FL, the other
> 8mm FL. They each fit inside the film canister, and careful choice of
> barnds of film cansietr means that I can get one to slide into the other,
> to
> give coarse focussing (and the CCTV lens has a helical focus-of-corts).
>
> My initial results were very similar to the excellent examples on the page
> above - very close focus/very wide angle/enormous depth of field images,
> and
> have conviced me to do it just a little bit more rigorously to try to get
> better repeatability.
>
> Yes, these macro lenses *do* have hteir practical uses (even if, in this
> case, it's not actually in use as intended. More as a lens to project the
> CCTV lens image onto the 35mm frame size). Recommended.
>
> --
> Piers
>
> -----Original Message-----
> From: olympus-owner@xxxxxxxxxx [mailto:olympus-owner@xxxxxxxxxx] On Behalf
> Of R. Jackson
> Sent: 27 August 2005 09:10
> To: olympus@xxxxxxxxxx
> Subject: [OM] OM macro lenses?
>
>
> I've always kind of wondered about the 20mm and 38mm macro lenses.
> Anyone tried them? I don't own the bellows or the auto-extension tube, so
> it's just kind of a passing curiosity, but I'd love to hear something
> about
> the lenses or see photos someone has taken with them.
>
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