Red Zoom

[chuck colburn]

Is the RED zoom an 18mm focal length for the RED S35 format the way a Zeiss 18mm cine lens is an 18mm fl for the S35 format? That there is not a focal length mutiplication factor (1.66x ?) like when using still camera lenses.

[Stephen Williams]

Is the RED zoom an 18mm focal length for the RED S35 format the way a Zeiss 18mm cine lens is an 18mm fl for the S35 format? That there is not a focal length mutiplication factor (1.66x ?) like when using still camera lenses.

Hi Chuck,

I sincerely hope so! Isn't an 18mm lens always an 18mm lens?

Stephen

[chuck colburn]

Hi Chuck,

I sincerely hope so! Isn't an 18mm lens always an 18mm lens?

Stephen

Damn't Stephen, don't start with me! LVOL...
You know what I mean though. Why I asked was, I was told the 300 was actually the equivalent of a 480 on the RED camera. It just wasn't indicated they way on the lens.

[Mark B.]

There isn't a perspective change, it's just a cropping effect.

[Andrew M.]

Hi Chuck,

I sincerely hope so! Isn't an 18mm lens always an 18mm lens?

Stephen

What I have learned on this forum is that focal length has nothing to do with the name of the lenses. So 18 mm focal length lens is what it mean 18mm as you can measure it.

If the name of the lens shows 22-110 it mean that the lenses have name “22-110” but not the focal length. Some manufacture may call lenses with the numbers that have nothing to do with the focal length but they still do it so customers knows that the lenses do perform like the focal length etc. “22-110” with the bit smaller/bigger sensor on the camera.

So the 18 mm focal length is always 18 mm focal length.
50 mm on 135 size sensor will be normal (no zoom or wide angle)
28 mm on S35 will be the normal

[Stephen Williams]

If the name of the lens shows 22-110 it mean that the lenses have name “22-110” but not the focal length. Some manufacture may call lenses with the numbers that have nothing to do with the focal length but they still do it so customers knows that the lenses do perform like the focal length etc. “22-110” with the bit smaller/bigger sensor on the camera.



Hi,

Could you give me an example of a manufacture doing that?

I have seen small digital cameras marked with equivalent focal length, but never lenses on their own.

Stephen

[Stephen Williams]

Damn't Stephen, don't start with me! LVOL...
You know what I mean though. Why I asked was, I was told the 300 was actually the equivalent of a 480 on the RED camera. It just wasn't indicated they way on the lens.

Hi Chuck,

The Red 300mm is a 300 mm on the Red camera (or motion picture camera) but would have the equivalent angle of view of a 480mm lens on a Nikon still camera! I think people just want to confuse themselves!

Stephen