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Technical exercise using a Minolta RF 500/8 mirror lens / Minolta SR extension tubes / Minolta MD to Leica M / Leica M to TL adapter / Leica SL 601 … plus converted flower pot (lined with matt black self adhesive velour) lens hood … as a D.I.Y. "Questar macroscope" substitute … Intention being to explore the 'long subject distance' close-up imaging potential of the 1970s Minolta RF mirror lens … and with a view to using same for dragonfly photography.  But this exercise was completed in my kitchen at 2.3m subject distance which enabled approx half life size (0.5x mag.) imaging of the orchid flower head … Illumination via countre jour window light plus a crumpled tin foil reflector to front RHS.  The focus ring lever extension made from hard foam enables finer focus … most mirror lenses' focus helicoids are too coarse for fine focus.

The Minolta RF 500 has same optical design as the Leitz MR Telyt R 500/8 … it was 'badge engineered' into the R lens in1979 during the  Minolta / Leitz partnership. Nowadays the Leitz MR Telyt 500/8 is usually listed for c. £900 … but this Minolta RF 500 example was listed by Ffordes recently for £160 … and the Minolta SR tubes (also from Ffordes) cost just £10 

Apparatus photos:

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cont'd. …. 

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Modified flower pot lens hood lined with self-adhesive matt black velour 

 

cont'd ...

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… and resultant Orchid mage 

 

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Best wishes

dunk 

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53 minutes ago, dkCambridgeshire said:

… plus converted flower pot (lined with matt black self adhesive velour) lens hood … as a D.I.Y.

You are Heath Robinson and I claim my £5! 😄

Wonderful work, dunk.

Pete.

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  • 3 weeks later...

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Experimented yesterday with SL 601 plus manual focus Canon FD 800mm 'L' lens ... plus Canon FD 2x 'A' extender ... latter has a reputation for being a rather 'average' extender but I'm happy with it. The recently sheared sheep was maybe 70m distant. 

BW

dunk

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On 6/17/2020 at 8:36 PM, dkCambridgeshire said:

Experimented yesterday with SL 601 plus manual focus Canon FD 800mm 'L' lens ... plus Canon FD 2x 'A' extender ... latter has a reputation for being a rather 'average' extender but I'm happy with it. The recently sheared sheep was maybe 70m distant. 

BW

dunk

Dunk- Out of interest, which adapter did you use?

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Great Crested Grebe Nesting ... from a hide at approx 100m distance ... SL 601 & manual focus Canon FD 800/5.6 L plus FD 2x 'A' extender ... supported on Jobu gimbal /Berlebach HD wooden tripod.  Late evening low Sun, ISO 800, 1/500, effective aperture f11

dunk 

Edited by dkCambridgeshire
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em casa by JM__, on Flickr

1936 70mm Roland Kleinbild Plasmat f2.7 on SL

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Juveny by JM__, on Flickr

1936 70mm Roland Kleinbild Plasmat f2.7 on SL

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Picked up a cheap adapter for my old Pentax-M / K glass. Most of which I purchased in the late 70's /early 80s. This is the SL with a Pentax-M Macro 1:4 100mm. It should be fin playing with this adapted glass. This is cropped to about 50% of frame with the MFD extended a bit with the adapter. Glass seems to hold up very well, with a creamy bokeh. 

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Carl Zeiss Jena Sonnar 1:2 f=5cm T* in Contax rangefinder mount from around 1949.  Shot at f/4 on SL using Contax to LTM with LTM to M and M-Adapter L.  Level of detail and transition to out-of-focus quite something after 71 years and counting ...  Approx 18Mpixel crop at 3x4 from 24Mpixel original then downsized for 2480 px wide Jpeg.

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On 5/30/2020 at 7:09 AM, Kyros Moutsouris said:

Who makes an Xpan to L-mount adaptor?

I got a Kipon adapter and am trying it out.  I have 45 and 90 XPan lenses.  Here's a grab shot with the 90.  The first thing that you notice is that it is absolutely uniform in its rendering across the field.

U1040410 by scott kirkpatrick, on Flickr SL2

 

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Here are some with the X-Pan 45 (center filter installed, which makes it a 6 x 7 lens with f/5.6 effective speed.

U1040455 1 by scott kirkpatrick, on Flickr

U1040457 by scott kirkpatrick, on Flickr

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Abel by JM__, on Flickr

Abel by JM__, on Flickr

 

Sylvain by JM__, on Flickr

50mm Angénieux S21 Exakta on SL

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Carl Zeiss Jena Sonnar 1:1,5 f=5cm, uncoated lens from around about 1937, originally mounted on Contax II rangefinder. Shot on SL using Contax-L39, L39-M and M-Adapter L.  Shot wide open, cropped to 3x4.

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Same scene and lens but this time at f/5.6.  Classic "Sonnar look".

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Rollei Planar 1,8/50 (Singapore), if a mid-1970s lens can be called "vintage".  Shot wide-open on SL, slight crop to 3x4.  Often compared with Carl Zeiss Planar 1,7/50 (Japan), a different formula.  I prefer the way the Rollei draws.

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