normal field of view without any zoom

[rookie1010]

Hello,

Is the normal field of view (without any zoom) of a camera 45 degrees. If the camera has a normal field of view of say 60 degrees, would it be correct to say that the camera is more or less a wide angle camera?

 

[ElFenix]

for a 135 camera, horizontal FoV of a perfectly normal lens (43 mm) is about 45 degrees on the horizontal. this can change if you have different aspect ratios, however, so, it doesn't really work like that.

60 degrees on a 135 camera is about 31 mm focal length, so, yes, that would be a wide angle lens. but again, it doesn't really work like that. if you have a wider strip of film it'd be wider using the same lens (assuming the lens can throw an image circle that wide), if you have a more narrow strip of film it'll be more narrow.

 

[OdiN]

Typically for 35mm cameras a 50mm or 45mm lens is referred to as a "normal" lens. With Digitals - APS-C sized - often this "normal" lens is around 27mm.

 

[rookie1010]

thanks for the replies,

is a 135 camera the same as a 35 mm camera?

how is the FOV related to the focal length?

 

[corkyg]

Originally posted by: rookie1010
thanks for the replies, how is the FOV related to the focal length?

This article is easy to understand and includes a good, illustrated response to your question.

FOV

In principle, as the focal length increases, the FOV narrows. Short focal lengths have wide FOVs.

 

[soydios]

Originally posted by: rookie1010
is a 135 camera the same as a 35 mm camera?

35mm film (36mm x 24mm) is technically called "135 film".

 

[rookie1010]

thanks for the replies and the link, it makes sense now