Crop factor in dx


garbled

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Dec 4, 2009
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#1
Does the tokina 11-16 dx lens is already cropped for medium format dslr or its as it is? How about the other nikon dx lenses? Google doesn't really give me anything...or I'm searching for in the wrong way.

Something like

11x1.5 crop factor=16.5
12x1.5 crop factor=18
16x1.5 crop factor=24
 

zapper10

New Member
Jan 7, 2010
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#2
You need to multiply with 1.5 as per your calculation. The DX lens is only indicates that it worked on DX camera. It is not big enough for FF camera. :)
 

Kit

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Jan 19, 2002
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#3
The term you used is incorrect. DX format refers to cameras which have a smaller sensor (or also known as "cropped"). Medium format is a different format altogether. All lenses are labelled with reference to commonly known "full frame" standard. So you have to multiply the focal lengths by 1.5, 1.6 or even 2, depending on the camera(brand) in question.
 

ZerocoolAstra

Senior Member
Mar 13, 2008
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#4
Does the tokina 11-16 dx lens is already cropped for medium format dslr or its as it is? How about the other nikon dx lenses? Google doesn't really give me anything...or I'm searching for in the wrong way.

Something like

11x1.5 crop factor=16.5
12x1.5 crop factor=18
16x1.5 crop factor=24
I checked your post history and some of them you've been advising people like an expert in photography... Now you come back and ask this sort of question??
I'm very puzzled...
 

daredevil123

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Staff member
Oct 25, 2005
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#5
I checked your post history and some of them you've been advising people like an expert in photography... Now you come back and ask this sort of question??
I'm very puzzled...
LOL :bsmilie: Bro, don't be so direct leh... wait people :cry:
 

wildcat

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Sep 8, 2004
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#6
LOL :bsmilie: Bro, don't be so direct leh... wait people :cry:
Hannor.. I also scared scared now. After I dish out "advise" then later ask this kinda of question... *can see ZCA shake head*

Keke. Kidding ya. ZCA no angry, k?
 

daredevil123

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Oct 25, 2005
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lil red dot
#7
Hannor.. I also scared scared now. After I dish out "advise" then later ask this kinda of question... *can see ZCA shake head*

Keke. Kidding ya. ZCA no angry, k?
No matter what, you are still going to give that talk about perspective distortions at the coming outing at Helix right? ;)

Mai Siam.
 

Numnumball

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Mar 6, 2009
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#9
Hannor.. I also scared scared now. After I dish out "advise" then later ask this kinda of question... *can see ZCA shake head*

Keke. Kidding ya. ZCA no angry, k?
No matter what, you are still going to give that talk about perspective distortions at the coming outing at Helix right? ;)

Mai Siam.
Yah..bernard.. u better do a gd job on 26 Jun.. make it a lengthy one.. say 15 mins ok.. me, DD123 and ZCA will be watching closely *give pressure* :devil:
 

Numnumball

Senior Member
Mar 6, 2009
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#10
Does the tokina 11-16 dx lens is already cropped for medium format dslr or its as it is? How about the other nikon dx lenses? Google doesn't really give me anything...or I'm searching for in the wrong way.

Something like

11x1.5 crop factor=16.5
12x1.5 crop factor=18
16x1.5 crop factor=24
bro, not medium format man.. thats would be somewhat up to 36mm x 48 mm, which the 1.5X will not apply (its not meant to anyway). Tokina 11-16 is never designed for FX usage, much less Medium Format.

As what Kit has mentioned, DX refers to a smaller sensor size and DX lenses are lenses which manufactured to only cover the smaller sensor of it. DX lenses will work properly on FX cameras too but at the expense of major dark corners (vignetting)
Are u referring to FX instead? Which is actually 36mm X 24mm in 135 film.

Hope this clarfies man :)
 

garbled

New Member
Dec 4, 2009
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#11
Maybe I'm not being too clear about my question.

What I meant is, since its a dx lens am I getting the full "11-16" in a dx camera?






OOoh,,,lastly,,,Zerocoolastra, you're digging my old post? I'm apalled and feeling creepy at the same time. :bsmilie::bsmilie:
 

AlvinOMG

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Jan 2, 2010
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#12
No. Since your camera have a crop factor of 1.5x, 11-16 will become 16.5-24 in 35mm format (aka full format).

HTH.
 

garbled

New Member
Dec 4, 2009
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#13
You need to multiply with 1.5 as per your calculation. The DX lens is only indicates that it worked on DX camera. It is not big enough for FF camera. :)


aaah this one, this is the one....thanks all for the clarification....

cheers!
 

hotwork77

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Jun 21, 2009
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#14
I checked your post history and some of them you've been advising people like an expert in photography... Now you come back and ask this sort of question??
I'm very puzzled...
Har ya bro...TS ask, just reply lol. Otherwise don't shoot him leh. Sometimes expert also got bad hair days right?
 

Scoop

New Member
Oct 27, 2009
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#15
Maybe I'm not being too clear about my question.

What I meant is, since its a dx lens am I getting the full "11-16" in a dx camera?
No, because of the DX sensor, the 11-16 will only be 16.5-24mm equivalent. The DX lens specification just means that the lens was designed primarily to be used on crop sensor bodies.

*wow.. didn't know so many people replied in the time I was sending this out*
 

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hotwork77

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Jun 21, 2009
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#16
Maybe I'm not being too clear about my question.

What I meant is, since its a dx lens am I getting the full "11-16" in a dx camera?

OOoh,,,lastly,,,Zerocoolastra, you're digging my old post? I'm apalled and feeling creepy at the same time. :bsmilie::bsmilie:
You are still getting the full 11-16. What you are not getting is the same DOF.

And ya...I thought you are the expert based on your past postings. :cool:
 

Scoop

New Member
Oct 27, 2009
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#17
You are still getting the full 11-16. What you are not getting is the same DOF.

And ya...I thought you are the expert based on your past postings. :cool:

DOF?? Did you mean to say field of view (FOV)??
 

garbled

New Member
Dec 4, 2009
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#18
stalker you! ahaha
 

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ZerocoolAstra

Senior Member
Mar 13, 2008
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#19
Maybe I'm not being too clear about my question.

What I meant is, since its a dx lens am I getting the full "11-16" in a dx camera?






OOoh,,,lastly,,,Zerocoolastra, you're digging my old post? I'm apalled and feeling creepy at the same time. :bsmilie::bsmilie:
curious mah.... I see you have 100+ post count, so I kaypoh kaypoh check your post history...

Found out you sold D90 and bought D700... and you were telling people "this lens is DX.... that lens is FX...." and so on and so forth...
So now you come and ask if 11-16DX is really 11-16, so i'm scratching my head here... :bsmilie:

11-16mm is the true focal length of the lens asembly inside the Tokina lens. What most people are trying to compare is Field of View (FOV), otherwise ___mm doesn't really make much sense.
For whatever reason, 35mm film (or FX/FF in DSLR terms) was taken as the reference... hence the the crop factor of 1.5x from DX to FX to get the same FOV.

Hence, 11mm on DX and 16.5mm on FX should yield almost exactly the same field of view when you snap and compare them side-by-side on a monitor.
 

ZerocoolAstra

Senior Member
Mar 13, 2008
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#20
bro, not medium format man.. thats would be somewhat up to 36mm x 48 mm, which the 1.5X will not apply (its not meant to anyway). Tokina 11-16 is never designed for FX usage, much less Medium Format.

As what Kit has mentioned, DX refers to a smaller sensor size and DX lenses are lenses which manufactured to only cover the smaller sensor of it. DX lenses will work properly on FX cameras too but at the expense of major dark corners (vignetting)
Are u referring to FX instead? Which is actually 36mm X 24mm in 135 film.

Hope this clarfies man :)
probably confusion with the naming... thought FX/FF was referred to as 'full-format' or whatever, so DX should be medium format... hehehehe.
 

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