Angle of View Q
Nov 20, 2018 13:09:35 #
nadelewitz
Loc: Ithaca NY
Angle of view is a lens property...its focal length, not a calculation or anything relative to the subject.
You can find the angle of view for a lens by looking at its specs in its manual, online, etc.
You can find the angle of view for a lens by looking at its specs in its manual, online, etc.
Nov 20, 2018 13:15:26 #
nadelewitz wrote:
Angle of view is a lens property...it's focal length, not a calculation or anything relative to the subject.
You can find the angle of view for a lens by looking at its specs in its manual, online, etc.
You can find the angle of view for a lens by looking at its specs in its manual, online, etc.
Angle of view doesn't depend solely on focal length but also the size of the sensor or film and can be calculated based on the the sensor size and focal length. Angle of view does change slightly as you focus closer so if you're nit picking then the distance the lens is focused at is a factor too. But then if the lens has focus breathing then it's even tougher.
Nov 20, 2018 13:18:39 #
nadelewitz
Loc: Ithaca NY
The original post was too confusing to know what the poster was trying to do.
Nov 20, 2018 13:40:52 #
CO wrote:
I think you have to separate the two things you're describing. First calculate the angle of view required. Then find a lens that gives you the required angle of view.
I just did a calculation using their trig formula. If you're subject is 5 feet across and 10 feet from the camera, your angle would be 28 degrees.
This website gives a formula for calculating that.
https://www.panohelp.com/lensfov.html
I just did a calculation using their trig formula. If you're subject is 5 feet across and 10 feet from the camera, your angle would be 28 degrees.
This website gives a formula for calculating that.
https://www.panohelp.com/lensfov.html
Nov 20, 2018 14:04:07 #
John_F wrote:
sThe diagonal of the focused subject, depends on the subject distance, the sensor diagonal, and the focal length so it is just mathematics to calculate the angle of view. So considering all the subject types - macro to normal to telephoto - what would the angle of view ranges for each subject type?
Is it just me? I don't think there's any way to answer this question.
Nov 20, 2018 18:30:14 #
It alwasy good to understand the optical characteristics and specifications of the lenses we use or are considering to purchases. It's good to have a basic understanding of field angle, magnification rates and all the othere specifics so we can make informed decisions when comparing lenses and we are shooting, it's certainly advisable to understand what happens when we we change focal lengths or apply them to various sensor or formerly, to film formats.
Thing is, when we are actually out in the field shooting, most of us don't begin to make mathematical or geometric calculations. When I am shooting an interior or exterior architectural job or a landscape, in assessing the scene or space, I don't think terms of angles of coverage and then match that quantity a specific focal length. I doubt if many photographers approach things that way. We know what lenses we have, their assets and limitations, and select the best focal length for the job at hand. While composing the image, of course, we visually assess the image and the adjust accordingly.
Thing is, when we are actually out in the field shooting, most of us don't begin to make mathematical or geometric calculations. When I am shooting an interior or exterior architectural job or a landscape, in assessing the scene or space, I don't think terms of angles of coverage and then match that quantity a specific focal length. I doubt if many photographers approach things that way. We know what lenses we have, their assets and limitations, and select the best focal length for the job at hand. While composing the image, of course, we visually assess the image and the adjust accordingly.
Nov 20, 2018 18:49:30 #
steve_stoneblossom
Loc: Rhode Island, USA
aellman wrote:
s
Is it just me? I don't think there's any way to answer this question.
Is it just me? I don't think there's any way to answer this question.
Agreed.
Nov 20, 2018 18:49:51 #
steve_stoneblossom
Loc: Rhode Island, USA
nadelewitz wrote:
The original post was too confusing to know what the poster was trying to do.
Nov 21, 2018 07:32:26 #
Angle of view is a function of the lens and does not change. What does change is the breadth of the of the area encompassed as distance from the origin point increases
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