At what focal length does a lens transition from wide angle to zoom?

12 years 7 months ago #149863 by Janos
I hope my question is coming out right? If you had a box full of prime lenses 15mm, 20mm, 24mm, 30mm, 40mm, 50mm (I'm just making up random numbers) at what point do you stop saying this is a wide angle lens, and this is a zoom lens?

I was reading one persons thoughts who claimed that it's anything after 50mm. Seeing that 50mm was closest to what the eye sees?


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12 years 7 months ago #149865 by Baydream
Big difference between wide angle and zoom.
Perhaps you meant wide angle and telephoto?
In film parlance and full-frame (35mm) digital, 50 mm is generally considered the cross over point at which the lanes matches the human eye. With crop sensor camera, the effect is gained for about a 35mm lens.

There are wide angle zooms, telephoto zooms, wide angle primes and telephoto primes.

Shoot, learn and share. It will make you a better photographer.
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12 years 7 months ago #149870 by Janos

Baydream wrote: Big difference between wide angle and zoom.
Perhaps you meant wide angle and telephoto?
In film parlance and full-frame (35mm) digital, 50 mm is generally considered the cross over point at which the lanes matches the human eye. With crop sensor camera, the effect is gained for about a 35mm lens.

There are wide angle zooms, telephoto zooms, wide angle primes and telephoto primes.


Yep, you figured out what I was trying to say. So 35mm is that cross over point from wide angle to telephoto. Exactly the information I was looking for. Just interesting to see how manufactures market these lenses and such. I'm referring to the verbiage used in their ads.


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12 years 7 months ago #149884 by KCook
Also depends on who you ask. I'm old school. In full frame terms anything under 40mm is wide angle to me. But lots of today's kids scoff at anything over 28mm being an acceptable WA. More thoughts on this thread -

www.photographytalk.com/forum/photograph...e-our-natural-vision

Kelly Cook

Canon 50D, Olympus PL2
kellycook.zenfolio.com/

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12 years 7 months ago - 12 years 7 months ago #149898 by MLKstudios
Zoom can be from wide to wider or telephoto to more telephoto, so isn't applicable. It simply means a lens with a variable focal length.

The crossover point is based on the format of the camera and is called the "normal" focal length.

For most Nikon DSLR's with APS-C chips it's close to 35mm. For Canon, it's closer to 30mm (their chip is a bit smaller). And for Olympus (and other 4/3rds cameras) it's near 25mm.

Longer than normal = telephoto.

Shorter than normal = wide angle.

Normal = diagonal of the format.

Matthew :)

Matthew L Kees
MLK Studios Photography School
www.MLKstudios.com
[email protected]
"Every artist, was once an amateur"

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12 years 7 months ago #149971 by Henry Peach
Rather than focal length you want to be considering field of view, which as has been mentioned is a combination of focal length and format. A normal lens is one with which the horizontal field of view is approximately 40 degrees.

A 50mm lens is:
very long on most compact camera formats
long on APS-C format
normal on 35mm format
wide on medium format
very wide on large format

Comparing lenses to human vision is an exercise in frustration IMO. The human eyes and mind create an image unlike any lens I've ever encountered. For instance here's info on the human vision field of view. en.wikipedia.org/wiki/Human_eye#Field_of_view

www.cambridgeincolour.com/tutorials/cameras-vs-human-eye.htm
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12 years 7 months ago #149997 by Bob Eaton
I was taught that anything under 50mm was considered wide angle. This refers to film, so digital may be different!!!!!!! :silly:

Nothing is Beatleproof!!!!!!!!!
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12 years 7 months ago - 12 years 7 months ago #150032 by Stealthy Ninja
I personally (assuming Full Frame/35mm/FX format) would put 35mm or wider as a wide angle. 36-60 as normal and 60+ as telephoto.

But I'm not the king of the lenses so YMMV.
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12 years 7 months ago #150146 by Henry Peach

Bob Eaton wrote: I was taught that anything under 50mm was considered wide angle. This refers to film, so digital may be different!!!!!!! :silly:


It has nothing to do with film or digital. Just the format size. There are APS, 110, and half frame film cameras. A 50mm lens would be long on any of these.
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12 years 7 months ago #150231 by Bob Eaton

Henry Peach wrote:

Bob Eaton wrote: I was taught that anything under 50mm was considered wide angle. This refers to film, so digital may be different!!!!!!! :silly:


It has nothing to do with film or digital. Just the format size. There are APS, 110, and half frame film cameras. A 50mm lens would be long on any of these.

True!!!!!!

Nothing is Beatleproof!!!!!!!!!
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12 years 7 months ago #150232 by Bob Eaton

KCook wrote: Also depends on who you ask. I'm old school. In full frame terms anything under 40mm is wide angle to me. But lots of today's kids scoff at anything over 28mm being an acceptable WA. More thoughts on this thread -

www.photographytalk.com/forum/photograph...e-our-natural-vision

Kelly Cook

What do kids know!!!!!! :catfight:

Nothing is Beatleproof!!!!!!!!!
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