:: Astro tools ::

:: Exposure time calculator ::

Photographed object :
Film sensitivity :
Objective diameter :   optional instead of focal ratio
Focal ratio :   optional instead of objective diameter
Focal length [mm] :


 
Results :
Focal ratio :
Exposure time [sec] :
Exposure time [1/sec] :
Exposure time [mins] :

WARNING! This calculator may not work on Netscape browser