Tikitonga
Themenersteller
Hi all!
I ve been doing some research on how to calculate the FoV with a fisheye lens.
It's essential to be sure about the FoV before buying the camera and lens combination. So I'm hoping someone can confirm (or proof me wrong with) what I figured up. So this is the setup:
Camera:
Sensorsize: 1"; 13,2 x 8,8 mm; Format 3:2
Lens:
Focal Length: 7,5 mm
F Number: 3,5
Fisheye with: 180° FoV
MfT Mount
Knowing this I assume the crop factor would be 2,70. But the camera I've chosen has a special mounting system which increases the crop factor to 2,79.
Does this calculation seem reasonable to you and does that mean that the actual focal length is ~20,9 mm?
And - even more important - what does that mean for the FoV of this camera-lens combination? How many degrees will be left?
I attached a little graphic below to visualize my results. But I'm not sure about the whole thing and also not whether the fisheye shaped lens causes any difference in terms of the calculation?
Thank you for any helpful thoughts on this!
I ve been doing some research on how to calculate the FoV with a fisheye lens.
It's essential to be sure about the FoV before buying the camera and lens combination. So I'm hoping someone can confirm (or proof me wrong with) what I figured up. So this is the setup:
Camera:
Sensorsize: 1"; 13,2 x 8,8 mm; Format 3:2
Lens:
Focal Length: 7,5 mm
F Number: 3,5
Fisheye with: 180° FoV
MfT Mount
Knowing this I assume the crop factor would be 2,70. But the camera I've chosen has a special mounting system which increases the crop factor to 2,79.
Does this calculation seem reasonable to you and does that mean that the actual focal length is ~20,9 mm?
And - even more important - what does that mean for the FoV of this camera-lens combination? How many degrees will be left?
I attached a little graphic below to visualize my results. But I'm not sure about the whole thing and also not whether the fisheye shaped lens causes any difference in terms of the calculation?
Thank you for any helpful thoughts on this!
Anhänge
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Exif-DatenSensorsizeAndFoV.jpg91,4 KB · Aufrufe: 17