DX lenses on FX body. I'm sure this has been asked before...

hsiehjon

Senior Member
I currently use a DX camera (D5300) and own a few DX lenses (Sigma f2.8 18-50 and Tokina f2.8 11-17), and I'm wondering the compatibility of these lenses with an FX body (D610). Will I have a lot of lens vignetting when I use my DX lenses on an FX body?

Thanks!
 

Marcel

Happily retired
Staff member
Super Mod
Yes you would loose from vignetting. Plus the sharpness would be going down very fast the closer you'd get to the borders. Better wait and get a nice lens with that D610 when you have the cash.
 

Elliot87

Senior Member
I think I'm right in saying D610 is 10 mega pixels in crop mode, versus 24 mega pixels for the D5300. So which would give better images shooting the same subject with the same DX lens? D5300 would offer more resolution but would you still see advantages of the D610 that would make it worth using over the D5300 with DX lenses?
 

480sparky

Senior Member
ALL Nikon FX bodies have that. Don't try it with a Canon full frame. :)

Canon makes FX bodies and DX lenses?
CalvinBlink2.gif
 

WayneF

Senior Member
The big picture seems a lot more interesting than sweating the small stuff. Canon intentionally introduced incompatibilities between lenses for full frame and crop sensors. Lenses can vary, third party brands can differ, but there is risk of damage.
But (other than DX lens coverage diameter), Nikon maintained full compatibility, and provided compatible crop modes to use them.

I find it hard to imagine anyone would buy a full frame body for the purpose of cropping with crop lenses, but it can be done, certainly in a pinch. I've tried it a few times trying to pack a few more images on the memory card, but with the one lens, giving up wide angle is a serious burden.
 

480sparky

Senior Member
............I find it hard to imagine anyone would buy a full frame body for the purpose of cropping with crop lenses, but it can be done, certainly in a pinch. I've tried it a few times trying to pack a few more images on the memory card, but with the one lens, giving up wide angle is a serious burden.

I had to hold on to a couple DX lenses when I went FX simply because I didn't have the money to buy their FX counterparts. Not all of us are filthy, stinkin' rich.
 

WayneF

Senior Member
Right, the expense of converting to FX lenses is a big issue, which certainly should be given consideration. But still, in DX mode, the DX lenses can still do what they always did until that conversion. Nikon even provides Auto DX/FX switching for them. Except DX cropping on FX will be about 40% pixels and 66% resolution. Still generally enough for most casual purposes.

I found the opposite to be my problem, in regard to using FX lenses cropped in DX mode. A 12-24mm or 16-85mm DX lens is nice wide angle, and still does all it ever did on a cropped sensor. But now days, on a trip like a cruise (everything is just snapshots anyway, and excursion baggage is an issue), I only carry one 24-120mm lens with a FX body. I wish it were f/2.8, but it always seems extremely decent on FX. But if a notion to try to save memory card space with DX, then that 24mm on DX mode is not much, only very mild wide angle. That loss of wide angle is a very major loss. I found it necessary to set wide angle mode by switching back to FX mode. :) Carrying another wide DX lens would have advantage then, but just carrying another memory card is more feasible. :)
 
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