Telephotography using SLR cameras (digital or film) and compact
system cameras. In this system the camera lens is substituted for
the fiel telephotoadapter or fiel ey
photoadapter. To convert GS 665 ED models to a 750mm
1
/f.11.3
telephoto lens you will need a 40215 telephotoadapter.
Alternatively connect a suitable push fit photoadapter to your
viewing eyepiece.
2
A T-mount is required to connect the assembly
to the camera body.
Notes. Focusing is facilitated on the fieldscope. Camera may need to be
operated in manual mode with shutter locks disengaged where necessary. The
high magnification to aperture ratios result in slower shutter speeds compared
with conventional telephoto lenses so choose an IS0 setting of 400. For
35mm SLRs 400 ASA film is recommended. If possible use a cable release or
remote control to reduce camera shake when operating the shutter.
1
This is an approximate figure based on 35mm SLR cameras. D-SLR/compact system cameras use different sized image sensors compared to
35mm so an equivalent telephoto conversion figure must be calculated separately.
2
For information on push fit photoadapters visit our Telephotography pages at www.opticronusa.com
Digi-scoping with digital compact cameras, camcorders and cell phones.
Shooting high magnification photos and video through your fieldscope is possible if you have a suitable camera, camcorder
or cell phone. To find out how suitable or not your device is for digi-scoping, position it up to the
viewing eyepiece and see if an image appears on the screen. You may have to position the unit a few
mm away from the eyelens of the eyepiece and increase the zoom to get a full frame image.
The most suitable compact cameras are those with a lens diameter of 20mm or under and zoom range
no greater than 5x. To get the best results you will also need to fit a low magnification wide angle
eyepiece to your fieldscope or use a zoom eyepiece set at minimum.
To find out more about bespoke digi-scoping kits and universal mounts and brackets visit the Telephotography pages at www.opticronusa.com or
contact Sales on (704) 895 3046.
Address: Opticron LLC, 16501-D Northcross Drive, Huntersville, NC 28078
Tel: (704) 895 3046 Fax: (704) 895 3047 Email: sales@opticronusa.com
Waterproof Cases
Telephotography
Care & Cleaning
Stay-on-the-Scope Waterproof in Black
Water resistant multi-layer padded cases individually
designed to fit each model. Protects instrument while
fitted to a tripod and in use. Includes removable end
caps and adjustable carry strap.
Stay-on-the-Scope Waterproof in Green*
As black models but supplied with a fully adjustable
neoprene carry strap for extra comfort.
*Angled models only.
To clean outer glass surface of the eyepiece and objective lens, gently remove excess dirt and dust using a
compressed air device or blower brush. Caution. Hard and persistent rubbing of dirty surfaces can cause abrasive
scratches on the surface of the glass which may distort viewing. Breathe on exposed glass surface and then wipe
with an optical cleaning cloth (code 30277) in a circular motion until the surface is clean again. Do not attempt to
dismantle the instrument as this will invalidate the warranty.
Whenever possible store in a stable dry atmosphere away from moisture. For extra protection, use the gift box or
one of the optional cases available.
GS Fieldscopes
User Instructions and Warranty
North America
GS665EDUSA0614
Models
GS 665 GA ED
GS 665 GA ED/45
Camera body
T-mount
1. Telephotoadapter or
2. Photoa
eyepiece (inside)
