What item is right for you?
Ask our Experts! 800.606.6969 Live Chat

Vixen Optics SLR Camera Adapter G USA

B&H # VICAG Mfr # 1836
Usually ships in 7-14 business days

Availability Details


This is a special order item. Est. arrival at B&H is 7-14 business days (subject to availability). Your order will be charged at the time of shipment.

International Orders*
For international orders, credit cards will be charged at time you place your order.

Free Standard Shipping
Not eligible for free Expedited Shipping
You Pay: $59.95
Product Highlights
  • For Geoma Spotting Scopes
  • Requires GL15/20/25 Eyepiece
  • Requires Camera-Specific T-Mount Adapter

Ultratelephoto photography is easily achieved with your Geoma spotting scope by purchasing the Vixen SLR Camera Adapter G.  Unlike most of these devices, the Camera Adapter G allows you to shoot through an eyepiece (instead of using the scope, without eyepiece, as a prime focus SLR lens).  Since the fastest effective aperture is only f/10.7, it is only practical to use the Camera Adapter G in bright light and at a very high ISO setting.  Thankfully, the ability of modern DSLRs to render noise-free high-ISO images still makes the adapter G quite useful-it isn't for a film SLR.

The Camera Adapter G can only use the Vixen GL15, GL20, and GL25 eyepieces.  There is a built-in extension ring which can lengthen the effective focal length of your scope/eyepiece combination.

The effective focal length gets awfully long awfully quick using this adapter, so to get good results you'll need to take every precautions at your disposal to minimize vibration: lock up the SLR's mirror (if possible) just before firing, use a cable release or remote control to fire the shutter, and use a sturdy tripod.  Vibration suppression pads would also help quite a bit.

To use this adapter, first remove the eyepiece.  Next, attach the SLR camera adapter where the eyepiece would normally be attached to the spotting scope.  Screw in a t-mount adapter to the opposite end of the SLR camera adapter; now you can attach your camera to the t-mount and you are ready to begin taking pictures.

Note! Your camera will need to be in fully manual exposure mode, although some brands of camera may also work in aperture-priority autoexposure mode.  Additionally, if there is a switch on the camera which chooses the focus mode, that switch must indicate manual focusing.

Allows extremely high effective magnification telephoto photography
Captures images with SLR through a Vixen GL15, GL20, or GL25 eyepiece
Your camera's specific T-mount adapter is required
Focal Length GL15:  792mm w/ 52mm, 1100mm w/ 67mm, & 1400mm w/ 82mm scopes
GL20:  1080mm w/ 52mm, 1500mm w/ 67mm, & 1900mm w/ 82mm scopes
GL25:  1440mm w/ 52mm, 2000mm w/ 67mm, & 2500mm w/ 82mm scopes
Please Note:

maximum capacities with extension ring shown

Effective Aperture GL15:  f/15.2 w/ 52mm, f/16.4 w/ 67mm, & f/17.1 w/ 82mm scopes
GL20:  f/20.8 w/ 52mm, f/22.4 w/ 67mm, & f/23.2 w/ 82mm scopes
GL25:  f/27.8 w/ 52mm, f/29.9 w/ 67mm, & f/30.5 w/ 82mm scopes 2
Please Note:

maximum capacities with extension ring shown

Angle of View Not Specified by Manufacturer
Minimum Focus Distance Not Specified by Manufacturer
Length 2.0" (50mm)
Weight 0.09 lb (40g)
Vixen Optics SLR Camera Adapter G
  • 1-Year Warranty
  • T-Mounts

    Show more >

    Required item: Required when using a DSLR or Mirrorless cameras, will allow you to mount scopes on many cameras.

    Vello -  Lens Mount Adapter - T Mount Lens to Canon EOS Camera
    • You Pay: $8.75

    Cleaning & Anti-Fog

    Show more >

    Help keep your optics clean & fog free with these tools.

    Pearstone -  Microfiber Cleaning Cloth, 18% Gray (7 x 7.9")
    • You Pay: $4.99

    Tripods and Window Mounts

    Show more >

    Steady your binocular with the support and stability you need.

    Magnus -  DX-5320 Deluxe Photo Tripod With 3-Way Pan-and-Tilt Head
    • You Pay: $34.95

    Full size tripod

    Rugged Scoping Accessories

    Show more >

    Enhance your glassing or trekking sessions with these useful tools.

    Brunton -  9077 Lensatic Sighting Compass
    • You Pay: $6.48

    On Location Tools

    Show more >

    High-quality tools and flashlights always come in handy.

    Pelican -  HeadsUp 2720 LED Flashlight
    • You Pay: $24.95

    DigiCamera Brackets

    Show more >

    Universal mounting system

    Vixen Optics -  Digiscoping Balance Rail
    • You Pay: $34.95
    View all Accessories
    See any errors on this page? Let us know.