DX lens on FX camera
Dec 9, 2015 07:15:54 #
The Villages
Loc: The Villages, Florida
The newer Nikon DSLRs have the ability to allow the use of a DX lens on a full frame camera. This ability would eliminate there being dark edges at certain zoom ranges. Question - If the full frame camera's setting allowed for the use of a DX lens, would the 1.5 crop factor still come into play? So for example, would an 18-200mm DX lens have the equivalent of a 27-300mm reach?
Dec 9, 2015 07:19:58 #
Dec 9, 2015 07:43:46 #
The Villages
Loc: The Villages, Florida
PixelStan77 wrote:
I use a DX lens on a Nikon D800 and get the crop factor.
Thanks for the feedback. I like the size, weight and feel of a larger camera in the hand, but don't want (at this time) to lay out the funds for a 28-300mm fx lens. So something like a D800/D810 would still give me the reach. I know that I'll lose pixel count, but don't really need 36 for large crops and the taking up of computer space. Only have 10.2 mp now and sure I'd have more with the referenced concept.
Dec 9, 2015 07:50:03 #
PCity wrote:
The newer Nikon DSLRs have the ability to allow the use of a DX lens on a full frame camera. This ability would eliminate there being dark edges at certain zoom ranges. Question - If the full frame camera's setting allowed for the use of a DX lens, would the 1.5 crop factor still come into play? So for example, would an 18-200mm DX lens have the equivalent of a 27-300mm reach?
The crop factor comes from the camera, not the lens. Because you are using a setting on the camera to allow a DX lens it is basically cropping the full frame sensor down to an APS-C sensor size to the image circle from the lens fits the sensor I believe.
Dec 9, 2015 08:04:47 #
Pablo8
Loc: Nottingham UK.
I tried a crop lens on a full frame (D610) and area covered by the lens, showed up in the view finder. Hope this information helps..
Dec 9, 2015 08:06:19 #
The Villages
Loc: The Villages, Florida
Dngallagher wrote:
The crop factor comes from the camera, not the lens. Because you are using a setting on the camera to allow a DX lens it is basically cropping the full frame sensor down to an APS-C sensor size to the image circle from the lens fits the sensor I believe.
Therefore you concur with the assumptiopn that one would get the same mm each as a DX lens on a DX camera?
Dec 9, 2015 08:22:56 #
PCity wrote:
Therefore you concur with the assumptiopn that one would get the same mm each as a DX lens on a DX camera?
DX on a full frame camera is the same as DX on a DX camera.
You can set the latest FF cameras to ignore the fact that the lens is made for a DX camera using the full sensor, but you will get vignetting at the widest settings, if you are using a zoom lens, but at longer focal lengths, the vignetting will most likely be gone.
Keep in mind, you are using areas of a lens that are probably not as sharp as the mfg would like. Most DX zoom lenses are not the sharpest tools in the shed especially at the longer focal length.
Dec 9, 2015 08:22:56 #
PCity wrote:
... Question - If the full frame camera's setting allowed for the use of a DX lens, would the 1.5 crop factor still come into play? So for example, would an 18-200mm DX lens have the equivalent of a 27-300mm reach?
18-200mm lens will have the same reach on a full frame in native mode or DX mode and the same reach on a DX body.
Dec 9, 2015 08:38:16 #
PCity wrote:
Therefore you concur with the assumptiopn that one would get the same mm each as a DX lens on a DX camera?
Not really an increased mm length. What you get by a crop factor is the same field of view as a longer lens - exactly the same as cropping in post processing, the cropped image is magnified by the cropping and the filed of view changes.
A 50 mm DX lens is a 50 mm DX lens, on a DX camera it will have the equivalent field of view as a 75 mm lens on an FX camera.
Dec 9, 2015 08:41:58 #
PCity wrote:
The newer Nikon DSLRs have the ability to allow the use of a DX lens on a full frame camera. This ability would eliminate there being dark edges at certain zoom ranges. Question - If the full frame camera's setting allowed for the use of a DX lens, would the 1.5 crop factor still come into play? So for example, would an 18-200mm DX lens have the equivalent of a 27-300mm reach?
Yes it would but the amount of useable pixels would be reduced. Your 18-200 DX lens on a D7100/7200 takes full advantage of the 24MP sensor. On a D750 is would only use 10MP of the sensor. On a 36MP sensor it would use only 16MP.
However it may look better at the higher ISOs do the larger photo sites. The image would look cleaner and have better dynamic range.
On a D800/800E and D810 it would likely even look better over a greater ISO range.
Dec 9, 2015 08:43:56 #
Dec 9, 2015 08:48:50 #
The Villages
Loc: The Villages, Florida
GoofyNewfie wrote:
Perhaps THIS will help- from the Frequently Asked Questions section
Thanks. I've bookmarked that. :thumbup:
Dec 10, 2015 06:27:24 #
GoofyNewfie wrote:
Perhaps THIS will help- from the Frequently Asked Questions section
As the expression goes: "a picture is worth a thousand words". When I first saw article this a couple of years ago, I saved this article and moved it to my Photo Helpful Hints folder. And I do look at it from time to time to refresh my aging, feeble brain. -FiddleMaker
Dec 10, 2015 07:17:52 #
PCity wrote:
The newer Nikon DSLRs have the ability to allow the use of a DX lens on a full frame camera. This ability would eliminate there being dark edges at certain zoom ranges. Question - If the full frame camera's setting allowed for the use of a DX lens, would the 1.5 crop factor still come into play? So for example, would an 18-200mm DX lens have the equivalent of a 27-300mm reach?
Yes but an 18-300 mm lens is still an 18-300 mm lens. The image is just covering less of the sensor (it is covering the DX sized portion of the sensor) which is what we are referring to when we call it a crop. All 35mm lenses are depicted in their focal length which has nothing to do with image area. The DX or FX is the image area. Because of the crop factor, a DX camera (or an FX camera using a DX lens) makes a 35mm DX image appear similar to an FX 52mm lens roughly. (or we round it to a 50mm lens). You could almost compare it to putting a 1.5 tele-convertor on a lens but not getting the full FX area. I generally use my FX camera with FX lenses for landscape and some portrait work. Using a wide angle lens on a DX camera is starting with a handicap. That really nice 10-24 mm lens (yes I have a DX 10-24mm wide angle zoom and I love it BUT) on a DX camera is similar to a 15-36mm lens on an FX camera. I paid for a 10-24mm but got a 15-36mm lens, that doesn't sound like good economics. HOWEVER, on the other end, for birding, nature photography etc. You buy that 80-400mm lens and put it on your DX camera and it acts like a 120-600mm lens that you just paid for an 80-400. That's a steal. and that 200 - 500 just became a 300-750mm and then you stick a 1.5 tele on it and the tele is also multiplied. That means that you get the additional reach of 1.5 on your lenses on a DX camera (or you can put your FX in crop mode or you can just crop the photo in post processing). But the beauty is that with the DX camera you see your cropped work while composing on the camera. In FX you can too but this is just to make a point about using DX lenses on FX or using DX bodies. Sorry, short answer is yes... lol
Dec 10, 2015 07:25:00 #
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