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John Thomson Photographic Accessories :: Camera Accessories :: Macro Accessories :: Coupling rings :: Reverse Coupling Ring

Reverse Coupling Ring
Reverse Coupling Ring 
Reverse Coupling Ring

For Macro photography using reversed lenses

This method of macro photography requires two lenses to function - one is attached, as normal, on the camera, the other is reversed on front of the camera lens. The reversing ring screws into the filter thread of both lenses. This offers the closest focus of them all, but care is needed when choosing lens and aperture combinations. The best results are obtained when a smaller focal length lens such as a 50mm is reversed on the front of a longer one, say 105mm. You need to shoot with the reversed lens at the maximum aperture because the image may go black at the edges as you stop down. (vignetting)
A 50 mm lens provides +20 dioptres, much stronger than normal close-up lenses. Long and/or heavy lenses should not be reversed, because they would place too much strain on the filter mount.
If the lens that you are reversing incorporates floating elements for better performance at short distances (like some macro lenses and fast wide-angle lenses), then you should test it set for close focus and set for infinity focus; one position will probably give better results.
Because the reversed lens is attached by its filter mount, you are not restricted to using lenses designed for your camera system. You can even reverse enlarging lenses.

See http://www.alanwood.net/photography/reversing-rings.html

The 49-49mm coupling ring/adapter. Allows you to use 2 lenses with the 49mm and 49mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 58-58mm, and other sizes.

The 49mm-52mm coupling ring/adapter. Allows you to use 2 lenses with the 49mm and 52mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 58-58mm, and other sizes

The 49mm-58mm coupling ring/adapter. Allows you to use 2 lenses with the 49mm and 58mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 58-58mm, and other sizes

The 52mm-52mm coupling ring/adapter. Allows you to use 2 lenses with the 52mm and 52mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-58mm or 58-58mm, and other sizes

The 52mm-55mm coupling ring/adapter. Allows you to use 2 lenses with the 52mm and 55mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes.

The 52mm-58mm coupling ring/adapter. Allows you to use 2 lenses with the 52mm and 58mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 58-58mm, and other sizes

Te 52mm-62mm coupling ring/adapter. Allows you to use 2 lenses with the 52mm and 62mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 49-49mm, and other sizes.

The 55mm-55mm coupling ring/adapter. Allows you to use 2 lenses with the 55mm and 55mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes

The 55mm-58mm coupling ring/adapter. Allows you to use 2 lenses with the 55mm and 58mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes.

The 58mm-58mm coupling ring/adapter. Allows you to use 2 lenses with the 58mm and 58mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 49-49mm, and other sizes.

The 67mm-67mm coupling ring/adapter. Allows you to use 2 lenses with the 67mm and 67mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-58mm or 58-58mm, and other sizes.

The 77mm-77mm coupling ring/adapter. Allows you to use 2 lenses with the 77mm and 77mm filter size to face one another. Step up/down rings can be used for the other lens thread sizes. Or you may use different sized coupling rings, i.e. 52-52mm or 58-58mm, and other sizes.

Details
 
SKU CA260
Shipping Group 1.00 .
Price: $12.00

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