I bought a lens reversal ring to try macro photography on my 50mm f/1.8 prime lens. But when I tried it, I couldn't control the aperture as my lens doesn't have manual aperture control. I attached the lens normally and changed the aperture and again detached it to use it reversed. But still, the aperture hole was the smallest. How can I overcome this problem? And if not possible, what equipment should I buy to make this work?

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    @xiota It's a Nikon D7000, and yes. I have tried it. Still doesn't work. :( – tomriddle99 Aug 24 '19 at 6:06
  • @xiota thanks, the blog in the mentioned answer was awesome. – tomriddle99 Aug 24 '19 at 6:19
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    A possibly cheaper solution to buying aparture control gear might be to buy a lens with full manual controls. Many film era lenses sells for very cheap while still being good. – lijat Aug 24 '19 at 12:21

For Nikon F-mount lenses with mechanical aperture control, you can use the Nikon BR-6 Auto Diaphragm Ring.

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For Canon EF lenses, which have electronic only camera/lens communication, you can use an "Automatic" Macro reverse mount adapter.

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There are also other "DIY" ways to set the aperture to a desired setting.

For Nikon F-mount lenses they usually involve fixing the aperture control lever at a specific position. For Canon EF lenses, one can dismount the lens from a powered up body set to the desired aperture while holding down the 'Depth of Field Preview'.

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