About this product
The Opticron Telephoto Adapter is an optical device optimised for photography. You simply remove the eyepiece, fit the Telephoto Adapter and attach your DSLR camera using a suitable T-Ring.
Focusing is is achieved via the telescope's focuser.
Your camera may need to be operated in 'Manual' mode, in some instances 'Aperture-Priority Auto' is also possible.
ISO settings of 400+ are recommended.
For best results mount the telescope on a tripod and use your camera's remote shutter release.
Equivalent focal lengths when used with a full-frame(1) DSLR: HR 66
800mm / f.12HR 80
900mm / f.11.3ES 80
950mm / f.11.9ES 100
1250mm / f.12.5GS 52
530mm / f.10GS 665
750mm / f.11.3GS 815
950mm / f.11.7
(1) These are approximate figures based on a 35mm SLR camera. If using a DSLR camera with a smaller size image sensor the effective focal length will be increased. For example, a DSLR with an APS-C type sensor effectively increases the above focal lengths by a factor of 1.6x
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