Do crop lenses give the same field of view to APS-C lenses that say, a full frame lens of the same focal length would provide?
I know a full frame 50mm lens on a crop factor sensor of 1.5 would provide a 75mm equivalent view.
However, would a crop lens of 50mm provide a field of view to a 1.5 crop sensor a 50mm field of view?
Sorry if that doesn't make much sense
A lens's focal length is its focal length.
A smaller sensor with a certain lens will see less than a full frame sensor will.
To get the same field of view that one lens and sensor and lens will give on a full-frame sensor on a crop sensor, you will need a wider lens.
The same principle works in reverse for sensors larger than 35mm full-frame format.
>Do crop lenses give the same field of view to APS-C lenses that say, a full frame lens of the same focal length would provide?
>However, would a crop lens of 50mm provide a field of view to a 1.5 crop sensor a 50mm field of view?
The Crop / FF lens distinction ONLY relates to how large of an image circle will project. A Crop and FF lens of 50mm will give the same FoV on any camera, it's just that you'll likely have some vignetting on the crop lens on larger sensors.
If you use a 50mm crop lens on a crop body, it will give you the same field of view as if you used a 50mm full-frame lens on your crop body.
That field of view is equivalent of using a 75mm full-frame lens on a full-frame body.
You're essentially asking if your crop lenses' focal lengths are already corrected for the crop factor. They aren't.
you can't, you can only state the focal length, and that implies you know what kind of body you'll be mounting the thing on
field of view is a function of the sensor's coverage and focal length