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Nikon D700 and DX lenses


johnmac 4 93
28 Apr 2012 4:11PM
Hi all, at last I have ordered my D700 with 24-120mm f/4 VRII and 50mm f1.8G lens. I have a D5000 at the mo with 18-55, 18-105 & 55-200 DX kit lenses. What's the down size of using a DX lens on a full frame camera?

Look forward to your replies

johnmac

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darrensmithgbr 10 241 1 England
28 Apr 2012 6:31PM
dx lenses are suited for cropped sensors so there will be some vignetting on your lenses less than 24mm or so. you will notice a drop off in quality to as the d700 will show more of the limits of the kit lenses.
although saying that it will certainly encourage you to buying some better glass to stick onto your new camera body.
User_Removed 11 17.9k 8 Norway
28 Apr 2012 8:36PM
Erm... I believe the D700 can accept all DX glass with no vignette as it senses when a DX lens is attached and 'switches mode' (which also means the pixel count drops to approx half of the full FX capability). Smile

(Vince? help out here please?...)
Scutter Plus
7 1.7k 6 United Kingdom
28 Apr 2012 8:41PM
Vince must be asleep Mike! But I'm sure you are correct - i.e. that the D700 senses the DX lens and compensates so the drop off in quality will only be down to pixel count AFAIK! (not that I'm the slightest bit interested in an FX bodyTongueTongue)
snapbandit 11 2.2k 3 Northern Ireland
28 Apr 2012 8:45PM
I'm pretty sure that the D700, just as with the other Nikon FF cameras, if you put a Nikon DX lens on the camera will automatically 'crop' the sensor image to the DX size (it does this with my D3s) therefore reducing the image pixel count, id be surprised if you got vignetting with them (I have just tried my Nikon 18-200 dx on the D3s & it went into 'dx mode' and showed no edge darkening at 18mm), but I also tried my Sigma 10-20mm lens and it did not automatically put the camera into dx mode (obviously then giving me severe vignetting in FF mode) the sig must not send the correct electronic info to get the dx mode to auto-set.

in Dx mode a section around the edge of the viewfinder is darkened to show where the dx crop area is

HTH

Joe B
User_Removed 11 17.9k 8 Norway
28 Apr 2012 9:01PM
I think he's out Ben!!! Who signed off his 'Escape' chit!! Wink

Thanks for the clarification on the D3(x) Joe - it is the same on the D700. The viewfinder 'crops' to the DX mode view but the image is captured without any vignetting (but at reduced pixel count. Please note that at no time was the word 'resolution' used in terms of any reduction. Wink)
johnmac 4 93
28 Apr 2012 10:30PM
Thanks for the info. I thought that was the case, the chap in Jessop thought I would get darkening around the edges. I can use the 24-120 f4 and 50mm f1.8G most of the time and fall back on 18-105 if needed.

Thanks again for your help
snapbandit 11 2.2k 3 Northern Ireland
28 Apr 2012 10:41PM
the 24-120 will more than cover the wide end (compared to the image on a dx cropped camera, 18mm will give the same image area as a 27mm on FF) and be just slightly shorter at the long (105mm) end, I don't really see any benefit in using the 18-105 compared to the 24-120, if you really need longer reach then the high end of your 55-200 would be more useful IMHO.

Joe B
dandeakin 7 209 3 England
29 Apr 2012 6:53AM
You can choose to set the D700 to shoot in FX or DX (auto) when a a DX lens is attached. If you set it to shoot DX the view finder darkens around the edges to show you the DX crop.

If you shoot a DX lens in FX you get heavy vignetting as you'd expect. That said, it's not always as much as you'd expect eg the 35mm 1.8 DX shooting wide open looks great. There's plenty of examples on Flickr etc if you search for for "DX on FX"
29 Apr 2012 7:30AM
I would sell 2 of your lenses Smile
While you get 18mm DX angle of view in DX mode with 18-55 and 18-105 that is no wider than you get with the 24-120 FX on a D700.
The problem with the DX lenses at 18mm is you get less than 6 MP - I do not see any point in using them when you get 12 MP 24mm FX angle of view using the 24-120 FX.
You then might put the money toward a 70-300, trading the 55-200 at the same time.
dandeakin 7 209 3 England
29 Apr 2012 8:58AM
Good advice

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