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Re: [OM] IMG: Macro Experiment with Leica-R 60 Elmarit Macro Lens

Subject: Re: [OM] IMG: Macro Experiment with Leica-R 60 Elmarit Macro Lens
From: "Wayne Harridge" <wayne.harridge@xxxxxxxxxxxxxxxxxxx>
Date: Wed, 14 Oct 2020 09:03:11 +1100
Great shot of a really interesting looking flower.

...Wayne


> -----Original Message-----
> From: olympus <olympus-
> bounces+wayne.harridge=structuregraphs.com@xxxxxxxxxxxxxxxxx> On
> Behalf Of Wayne Shumaker
> Sent: Wednesday, 14 October 2020 1:57 AM
> To: Olympus Camera Discussion <olympus@xxxxxxxxxxxxxxxxx>
> Subject: Re: [OM] IMG: Macro Experiment with Leica-R 60 Elmarit Macro Lens
> 
> At 10/12/2020 09:41 PM, Moose wrote:
> 
> >On 10/8/2020 4:42 PM, Ken Norton wrote:
> >>>This is by focal length shortening and  thus reduction in working
distance-
> -not always conducive to chasing critters but results in less light loss
than
> extension.
> >>There is, of course, one other method and that's to use a diopter on
> >>the lens. That can be through the use of a designed-for-macro-use
> >>diopter,
> >
> >Jim knows about that, although we haven't seen anything from his 135
> Takumar with Olympus IS/L Lens A-Macro H. Q. Converter f=40cm  dia.
> 49mm for a while.
> >
> >This is far my preferred method. So light, so quick, so easy, no lens
changing
> and lens/tube/body juggling - and excellent results.
> >
> >In a place like a botanic garden, I may be found palming one, on magnetic
> filter holder, and popping it on and off.
> >
> >The problems are two:
> >
> >Not all AC-U lenses work well with all lenses. And there's no way to
> >tell but trial and error, other than copying Moose. ;-)
> >
> >The selection is not ideal. Many of these lenses are discontinued, and
some
> are hard to find. The Pentax 67 T132 is so important to me that I had a
watch
> on the 'Bay for ages before snagging a back up.
> >
> >( There is an apparent difference between older and newer AC-U lenses.
> >the older ones seem to generally have stronger curvatures. The diopter
> >is simply the difference between front and read "powers". My suspicion
> >is that most older ones are designed to minimize reflections between
> >AC-U and main lens. Later ones have MUCH better coatings, and flatter
> >curves. Oly's latest, for smaller µ4/3 lenses is a bit like looking
> >into a black hole.)
> >
> >>or a reversed 50/1.4 sitting on the front of another lens.
> >
> >Optically a fine option, practically, a big, unnecessary pain.
> >
> >Getting Closer Moose
> 
> As you say, highly unlikely to come across a Pentax T132 (+0.76 d) or the
T226
> (+0.44 d).
> 
> I have the Sigma AML72-01 (+1.74 d) and is too much diopter for my use.
The
> less than +1.0 achromatic diopters seem to be rare indeed. Price usually
puts
> them out of practicality also.
> 
> I found this list of achromatic close-up lenses:
> http://fuzzcraft.com/achromats.html
> 
> From this list there is also a Minolta close-up lens (+0.33 d) 72mm
thread.
> One on echBay for only $500.
> 
> For shorter focal length lenses, smaller filter thread and higher diopter,
there
> are more options. Perhaps the Minolta No. 0 (+0.94 d) (52mm) only $30 on
> the 'Bay.
> 
> Years ago I experimented with the OM 180/2 with extension and 1.4X
> teleconverter with somewhat OK results. The faster 180/2 lens helped with
> that combination. Working distance was great.
> 
> Working distance is sacrificed with the diopter option. I only try using
the
> close-up filter option for static subjects, while working distance is more
> valuable for me in the field.
> 
> For now I use my Zony zoom lens at 0.35x or PL 100-400 at 0.25x. The
> Olympus 50-200mm f/2.8-3.5 ED SWD has 0.21x and worked good with the E-
> 1:
> 
> https://photos.app.goo.gl/Y7pGPkd9epLAJ9Tz6
> E-1 50-200mm @ 200mm.
> 
> social bug working distance - WayneS
> --
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