Opticron 40215 Photoadapter User Manual

Page 2

The 40215 Telephotoadapter converts
the following Opticron telescopes
to long focal length telephoto lenses
using SLR, D-SLR or CSC cameras.

Note. In addition you will need a
compatible T-mount to connect your
camera body to the photoadapter.

Equivalent focal lengths

HR 66 800mm/f.12
HR 80 900mm/f.11.3
ES 80 950mm/f.11.9
ES 100 1250mm/f.12.5
GS 52 530mm / f.10
GS 665 750mm / f.11.3

IS 60 WP

700mm / f.11.7

IS 70 R

750mm / f.10.7

MM3 50 - 530mm / f.10.6

1. Focal lengths listed are approximate

and based on 35mm SLRs. Many
D-SLRs use different sized image
sensors so a telephoto conversion
figure must be calculated separately.

2. An optional close focus adapter is

available for IS models.

User Instructions
1. To convert any of the telescopes

listed into a telephoto lens first
remove viewing eyepiece.

2. Screw telephotoadapter onto exposed

external thread of telescope body.

3. Attach appropriate T-mount to

external thread of telephotoadapter.

4. Attach camera body to the T-mount.

Notes
1. If you find the camera is at an odd

angle when attached - the twin
rings on the telephotoadapter or the
T-mount can be adjusted to bring the
camera into line.

2. Focusing is facilitated on the

telescope.

3. Camera may need to be operated

in manual mode with shutter locks
disengaged where necessary.

4. 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.