Exposure times for unguided tracking
Focal length
(35mm full size equivalent)
Max. exposure
(minutes)
50
100
135
200
300
70
* Measured values in our internal tracking test.
(These are not guaranteed values.)
* APSC size: If you are using a micro four-thirds
camera, etc., the corresponding focus distances
should be calculated.
The maximum exposure time for unguided tracking varies depending on the shooting
environment (strength of the legs, accuracy of adjustment of the polar axis, atmospheric
refraction, lens deflection, etc.). Use the values in the table above only as rough guidelines.
When a long-focus lens is used or when the exposure time is long, perform guided shooting
by linking a guiding scope.
Specifications and appearance are subject to change without notice.
40
35
30
15
Kenko Tokina Co., Ltd.
Kenko International Division
3-9-19 Nishi-Ochiai, Shinjuku-ku, Tokyo
161-8570 JAPAN
Tel: 81-3-5982-3206 Fax: 81-3-5982-3229
www.kenkoglobal.com
