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Pete Ganzel | profile | all galleries >> Tinkering >> A Modified Lenscap is Used to Provide Aperture Control for a Reversed Maxxum AF Lens tree view | thumbnails | slideshow

A Modified Lenscap is Used to Provide Aperture Control for a Reversed Maxxum AF Lens

A modified lens cap and a printed scale is used to provide aperture control and readout for Maxxum and Sony Alpha lenses when used reversed for close up work.

Since the camera provides aperture control and readout, there is no aperture ring on Minolta/Sony AF lenses. This accessory provides aperture control and an f/stop scale.

Normal lenses as used here are much better reversed when working at magnification ratios greater than life size (>1:1)

A 55mm filter ring is added to the modified cap for accessories such as the twin or ring flash as well as a protective lenscap and filters.


Coming soon in this project gallery is a ring that is used in conjunction with a cable release for automatic iris control that will also trigger the camera.
Cutting cap.jpg
Cutting cap.jpg		 Rev Aperture Scalem.jpg
Rev Aperture Scalem.jpg		 Dual Scale.jpg
Dual Scale.jpg		 cuttinglabel2962.jpg
cuttinglabel2962.jpg		 Placing Scale.jpg
Placing Scale.jpg
Ring Text 2977.jpg
Ring Text 2977.jpg		 Scale on lens 2968.jpg
Scale on lens 2968.jpg		 Off Camera 2991.jpg
Off Camera 2991.jpg		 Rev on 7D2978.jpg
Rev on 7D2978.jpg		 Reversed on Bellows 3002.jpg
Reversed on Bellows 3002.jpg
Reversing T Mount.jpg
Reversing T Mount.jpg		 Ring on Bellows 3009.jpg
Ring on Bellows 3009.jpg		 Twin Flash Mount 2985.jpg
Twin Flash Mount 2985.jpg		 With Cap 3012.jpg
With Cap 3012.jpg		 Reverse Ap ring and twin Flash 0129.jpg
Reverse Ap ring and twin Flash 0129.jpg
Reversed 50mm and T-Flash 0131.jpg
Reversed 50mm and T-Flash 0131.jpg		 Twin Flash Reversed Lens 0133.jpg
Twin Flash Reversed Lens 0133.jpg		 Reverse Ring Bower 6978.jpg
Reverse Ring Bower 6978.jpg		 Dual Threads 6981.jpg
Dual Threads 6981.jpg		 Bower on Camera 6974.jpg
Bower on Camera 6974.jpg
Vivitar Reverse T Set 1030.jpg
Vivitar Reverse T Set 1030.jpg

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Patrick Fanta 12-Apr-2014 16:38
Hello Pete,

I came across your site because of problems with my 35-70/4.0 (lame apperture) and found this very nice introduction how to build an aperture controlling ring for reversed Minolta AF lenses: Good idea and very good execution!

I thought about this myself, but to implement a 55mm filterthread into the cap let me say "Thumbs up!" and thank you for your detailed description!

Patrick
haldunk 16-Sep-2008 15:34
Pete, thank you for sharing this. This is a super idea. Bravo ! Regards.

Haldun
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