18-85mm lens

[Blaine Golden]

Very nice visual representation, Anders

 

[Charles Papert]

Also my question 2) is still to be answered, mind you
In case I wasn't clear enough, by "respective format" I meant :
putting the 16mm lens on the 16mm camera
putting the 35mm lens on the 35mm camera
Now… do they have the same FOV or not?

I'm not sure if this was specifically answered, although Ander's images were great (a picture tells a thousand words!!)

The answer is yes, in that the magnifcation factor between 16mm and 35mm is roughly 2:1. Bear in mind that there are Super versions of both formats which will tweak this ratio (and of course 16x2=32, not 35) but this is close enough.

 

[Emmanuel Cambier]

I cannot thank you all enough for your detailed answers.
Things are starting to take shape in my head, slowly, but I hope more surely, since it's an important matter.
Brook, well my friend I'd like to apologize, you told me so…
By the way wouldn't it be nice if you could extract some of those wonderfull explanations from all across this board and put them in a sticky?
I mean Anders' type of post is just so nice it would be really cool if we could just look up and find the answers to our questions.
Might save you guys some time too.
Thank you all

Emmanuel

 

[Emmanuel Cambier]

I'm not sure if this was specifically answered, although Ander's images were great (a picture tells a thousand words!!)

The answer is yes, in that the magnifcation factor between 16mm and 35mm is roughly 2:1. Bear in mind that there are Super versions of both formats which will tweak this ratio (and of course 16x2=32, not 35) but this is close enough.

Uhm… well…
charles I would tend to agree with your answer and say, yes,they would have the same FOV.
Let me recap the question:
1)
buy a 50mm lens that was made for 35mm cameras
and buy a 50mm lens that was made for 16mm cameras
2)
putting the 16mm lens on the 16mm camera
putting the 35mm lens on the 35mm camera

Question: do both cameras show the same FOV or not?

Anders example with 105mm lenses would lead to a negative answer:
- 35mm camera would show a large part of the truck
- 16mm camera would only show a small part of the truck

Am I reading Anders post correctly?
Charles, am I reading you correctly?

Yours "still a bit puzzeled" Emmanuel

 

[Anders Holck]

Anders example with 105mm lenses would lead to a negative answer:
- 35mm camera would show a large part of the truck
- 16mm camera would only show a small part of the truck

Am I reading Anders post correctly?
Charles, am I reading you correctly?

Yes, the 105mm would give different FOV on each format, just like you say in the quote.

To get the same FOV you would need to put a wider lens on the 16mm camera. Then the DOF will change if you use the same F-stop. Or you could move the camera back a few meters, but then the perspective would change.

 

[Emmanuel Cambier]

So if I buy a 50mm lens in the 16mm format to put on a 16mm camera, this won't give me the standard lens look I'm after?
What is a standard lens in 16mm format then?

By standard I just mean not a wide nor a tele lens, just a good old 50mm standard lens.

Yours Emmanuel

 

[Brook Willard]

So if I buy a 50mm lens in the 16mm format to put on a 16mm camera, this won't give me the standard lens look I'm after?
What is a standard lens in 16mm format then?

By standard I just mean not a wide nor a tele lens, just a good old 50mm standard lens.

Yours Emmanuel

This post confuses me...?

 

[Charles Papert]

A "standard" or "normal" lens in 16mm format is a 25mm, as you would expect mathematically.

Emmanuel, look carefully at the section of your question that I quoted--I answered just that and only that. Anders example was pointed towards a different part of your question, which dealt with the same lens on two different formats.

 

[SF Geek]

Hey Anders. Save that example. It just might be enough to keep those 9 page threads about depth of field, field of view, and format from happening ever again.

 

[Anders Holck]

In case I wasn't clear enough, by "respective format" I meant :
putting the 16mm lens on the 16mm camera
putting the 35mm lens on the 35mm camera
Now… do they have the same FOV or not?
That is the question…

I think Emmanuel meant:
I have two lenses with the same focal length. One is made for 16mm format, one for 35mm format.
If I mount the one made for 16mm on the 16mm camera and the one made for 35mm on the 35mm camera, will I get the same FOV?

 

[Charles Papert]

Oh OK, I get it now. Well, I think via Anders example, it's been well covered that a the only difference between a 16mm lens and 35mm lens is the coverage, and that it is the format (size of the gate/size of the imager) that dictates field of view.

So the answer would be--no, they don't have the same field of view.

 

[Emmanuel Cambier]

I think Emmanuel meant:
I have two lenses with the same focal length. One is made for 16mm format, one for 35mm format.
If I mount the one made for 16mm on the 16mm camera and the one made for 35mm on the 35mm camera, will I get the same FOV?

Thanks Anders
This is exactly what I meant.

Oh OK, I get it now. Well, I think via Anders example, it's been well covered that a the only difference between a 16mm lens and 35mm lens is the coverage, and that it is the format (size of the gate/size of the imager) that dictates field of view.

So the answer would be--no, they don't have the same field of view.

Charles I get it now, in 16mm format a "standard" lens is a 25mm, wich makes total sens, thank you

I've been learning great stuff thanks to you guys, I hope I wasn't too much of a pain in the rear

Yours Emmanuel

 

[Ken Corben]

Are you keeping the ND filters off and all auto functions off and lighting for f5.6 and lower to control the DOF with the dvx100?