Interesting, but I think I would have a LOT of trouble justifying the cost
(even to myself !).
...Wayne
-----Original Message-----
From: olympus
[mailto:olympus-bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx
] On Behalf Of Moose
Sent: Wednesday, 22 February 2017 3:39 PM
To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
Subject: Re: [OM] OH NO! More Alt dot Moose - Again
In a short thread of long, esoteric posts, Mike speculated on how to mount
MF WA lenses on mirrorless so that they can focus from very close up to
infinity.
This solution presented itself.
<https://www.cambo.com/en/actus-mini/cambo-actus-mini-view-camera/>
And, Mike, you won't need the T-S adapter. :-)
<https://captureintegration.com/first-look-cambo-actus/>
Other than that, I'd vote for the Oly Bellows mods for cost.
<https://www.bhphotovideo.com/c/product/1131857-REG/cambo_99010700_actus_b_v
iew_camera_body.html>
Alternate View Moose
==========================================
On 2/15/2017 4:13 PM, Moose wrote:
> On 2/14/2017 4:06 PM, Mike Gordon via olympus wrote:
>> The elgant but hard way Moose writes:
>>
>> <<Well, OK, there is a possible elegant manual solution,
>> using/modifying an Oly Bellows (and possibly leaving it so it can be
>> restored.)
>>
>>
>> . . .
>> <<That would do the job of allowing focusing by moving camera body
>> relative to a fixed lens with excellent, smooth control. And yes, the
>> A7 will clear everything on the bellows. Looking on Camreasize, is
appears the II and RII would also work.
>>
>> Thanks for the directions and providing food for thought--not sure I
>> have the heart to modify my LN bellows from Bill Barber.
>
> They are going for less than $100 on the 'Bay, some for a lot less. I
> bought a second a while ago mostly to get a second focusing rail to put my
Focus Stage on, so I wouldn't have to disassemble the bellows to use a focus
rail.
>
>> Would like to use a very good lens in front but wonder if using a
>> longer registration lens like an old t-mount
>
> The problem with T-Mount is that the adapters all correct for
> registration distance. Some sort of surgery would still be required to
> shorten the mount adapter. For those like ChrisT with machine tools and
skills, that's a doodle, but not for me.
>
> Another arts and crafts, as opposed to machine tool, solution would be
> to remove the fabric bellows entirely, which only requires a small
> cross-point screwdriver, and make a temporary bellows out of black
> rubber, or some such, which would "bellow" out from between the
> standards, rather than compressing between them. With the bellows removed,
the standards collapse to 12 mm. So maybe with rubber bellows 15-18 mm,
still leaving LOTS of room for focusing past infinity. The rear mount
adaptation I suggested would still be needed.
>
>> or even Mamiya 645 may be made to work and not require bellows
>> surgery. The Mamiya 35 isn't bad but does have more CA than I would
>> like but would also work on my Mirex T-S adapter. I think Kiron made a
pretty good Tmount 28mm perhaps branded as vivitar but don't clearly
remember and it may be hard to find.
>
> As with 1:1 mag, the folks writing about this stuff seem fixated very
> on wide angle. Is 35 mm wide enough? With the above approach, anything
down to 18 mm is easy with existing OM lenses.
>
>> The problem is then the possible thin custom adapters required--they
don't come cheap from Srb griturn if they
>> even will fabricate them anymore. I also wonder what would happen if
one mounted a WA on a screw macro rail
>> http://www.reallyrightstuff.com/B150-B-Macro-focusing-rail (there are
>> cheaper alternatives) and moved the cam back the same amount the helicoid
moved the entrance pupil forward????? perhaps mount a laser to align i
>> t in front--no clue what happens to the framing and whether one
>> could get the images to align and clean up OK in post. May be a recipe
for madness.
>
> Yeah, that sounds crazy making. The Oly Bellows is amazingly smooth
> and precise - and a lot cheaper than that RRS rail. I have a couple of
other, cheap, focusing rails/devices, and they just aren't very good.
>
>> Macro landscaper or mad as a hatter, Mike
>
> There's a difference?
>
> Been Known to Macro Moose
>
--
What if the Hokey Pokey *IS* what it's all about?
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