Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance.
Designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure with Nikon SLRs
Durable aluminum mount
1 Year Opteka Warranty
Extension tubes are designed to enable a lens to focus closer than its normal set minimum focusing distance. Getting closer has the effect of magnifying your subject (making it appear larger in the viewfinder and in your pictures). They are exceptionally useful for macro photography, enabling you to convert almost any lens into a macro lens at a fraction of the cost while maintaining its original optical quality. Extension tubes have no optics. They are mounted in between the camera body and lens to create more distance between the lens and film plane. By moving the lens father away from the film or CCD sensor in the camera, the lens is forced to focus much closer than normal. The greater the length of the extension tube, the closer the lens can focus. Opteka's 25mm Auto Focus extension tube is designed with all the circuitry and mechanical coupling to maintain auto focus and TTL auto exposure.
Most Helpful Customer Reviews
Works well, no issues with contacts or exposure. Autofocus is much slower, but usually focusing manually. Connects securely, but not too snug. Combined with 50mm or 60mm lens makes a nice combination. Beware that construction is entirely plastic and very light weight so really not appropriate for serious work with heavier lenses.
If I could give a zero or negative review I would. This is garbage. I would never buy it again. It does not fit properly and does not lock into place. I produces an error in the camera. Also it feels cheep. I know it is 15.00 macro tube but I still want it to work and it does not.
tried three different lenses on two different Nikon cameras that the vendors atated would be supported and never did get ab AF lens to focus. I returned the item for refund.
Do not buy.
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