View single post by jk
 Posted: Sun Sep 15th, 2013 05:57
jk



Joined: Mon Apr 2nd, 2012
Location: Carthew, Cornwall, United Kingdom
Posts: 6877
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Eric wrote: jk wrote:
Eric wrote: jk wrote:
amazing50 wrote: jk: It would be interesting to see what a shot on your D600 with say a 200mm at f5.6 lens cropped to the same size as a full frame shot taken with your Fuji which would be 560mm f5.6 equivalent.
When I get back go Spain (later this month or in October) I will do a straight comparison.
The Fuji is APS-C (DX) so it is only a x1.5 multiplier compared to a FX camera.

D600 with 300mm lens, and XPro1 with 55-200.  I'll also do a near equivalence so a D600 with 200mm and then cropped up to 300mm view so this will yield a near similar angle of view and MP equivalence.

D600 (24MP) v. XPro1 (16MP).



Interestingly...
The 55-200 paperwork says it is the equivalent of 84-305.

So ... unlike Nikon DX lenses, Fuji haven't corrected their lenses for the multiplication factor. They are effectively FX lenses?

No the Fuji lenses wont cover a FX format. 
The lenses are designed specifically for the X series cameras and wouldnt focus accurately on a FX camera.  The focus point is (I think) on 14-19mm behind the lens


But we are back to the old chestnut. How can a 55-200 be 'equivalent' to an 84-305 ...unless the magnification factor is being applied? Never get my head round this assertion.
A DX lens on a DX body has exactly the same field of view as the same focal lens as an Fx lens on an Fx body. Only when an FX lens is used on a DX body is there any relevance to a 35mm equivalent statement.


I have not however compared the field of view on the Fuji to the above mentioned scenarios. But I feel the 18mm of the 18-55 isnt as wide as the 18-105 DX on my D7000. Hence my view the Fuji isn't corrected.

Need to check.
No an 18mm on the Fuji whether it is a Nikon or a Fuji lens should give the same field of view as a 18mm on a DX but that lens placed on a FX camera (presuming it is a lens that covers a full frame camera sensor will provide a wider field of view.
 
I have a very nice diagram somewhere that explains this I will try to dig out later today when I have done my other jobs for this morning/afternoon.




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