Opticron 40215 Telescope adapter telescope accessory

Telephotoadapter for use with HR, ES, GS, MM3 & IS Equivalent focal lengths (These are approximate figures based on 35mm SLR cameras. D-SLR/compact system cameras use different size image sensors compared to 35mm and so an equivalent telephoto conversion figure must be calculated separately).
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
MM3 - 530mm / f.10.6
IS 60 WP - 700mm / f.11.7 (with optional 40927S close focus adapter)
IS 70 R - 750mm / f.10.7 (with optional 40927S close focus adapter)