Full Frame in Dx mode
Mar 6, 2018 17:16:51 #
Sorry for my lack of absolute precision. I was off by about a percent and a half. Wait - sorry - 1.55%. Apparently, according to your advance accuracy, the DX sensor would be 57.55 percent smaller. Not 56% as previously stated. A few rounding errors, and look what you have - something that is completely wrong. My bad.
Mar 6, 2018 17:33:16 #
Thank you all who replied. I was trying to not use the 2x teleconverter on next week's Death Valley trip. WIll have to bring it along.
Mar 6, 2018 17:43:39 #
rgrenaderphoto wrote:
Thank you all who replied. I was trying to not use the 2x teleconverter on next week's Death Valley trip. WIll have to bring it along.
I'd be interested to see if just cropping would be better than a teleconvertor, especially with the Nikon D-850.
Guess it depends on the quality of the lens and teleconvertor.
The 70-200 is a great lens...which teleconvertor do you have?
Have a great trip!
Mar 6, 2018 18:03:23 #
rgrenaderphoto wrote:
Thank you all who replied. I was trying to not use the 2x teleconverter on next week's Death Valley trip. WIll have to bring it along.
One thing to keep in mind is that you will lose light with it (I think 2 full stops - i.e. you need 4x as much light, so f4 is like f8). Your cameras meter will compensate, but its still something to deal with.
I feel like Death Valley is sunny, so maybe not a problem.
Mar 6, 2018 18:39:22 #
bpulv
Loc: Buena Park, CA
crazydaddio wrote:
Yes but at a reduced mpixel. It truly is no differ... (show quote)
I agree with you completely. When they first became available, I bought the Nikon 10-24mm DX lens for my 12Mp D90. I now use it on my D800, which yields about a 16-17Mp image with a DX lens. The Nikon alternative for a lens with about the same angle of view (wide angle) is the Nikon 17-35mm f/2.8D ED-IF AF-S at $1952. I cannot justify spending $1952 for the faster FX lens since the 10-24mm DX lens does what I need it to do.
Mar 6, 2018 18:53:45 #
rgrenaderphoto wrote:
So, on a Nikon D850 with a full frame 70-200 lens, if I put it the camera into Dx mode, do I get the 1.5% crop factor on the lens? So the 70-200 becomes a 105-300?
No.
It's still a 70-200.
You can get the exact same result if you crop the FX image in post processing.
Mar 6, 2018 20:50:50 #
GoofyNewfie wrote:
I'd be interested to see if just cropping would be better than a teleconvertor, especially with the Nikon D-850.
Guess it depends on the quality of the lens and teleconvertor.
The 70-200 is a great lens...which teleconvertor do you have?
Have a great trip!
Guess it depends on the quality of the lens and teleconvertor.
The 70-200 is a great lens...which teleconvertor do you have?
Have a great trip!
I have the Tamron G2 and their matched teleconverter. One think I learned in; cloudy/rainy conditions the combination of a 2x teleconverter and a CPL was bad.
Mar 6, 2018 22:16:52 #
therwol
Loc: USA
Gene51 wrote:
No.
It's still a 70-200.
You can get the exact same result if you crop the FX image in post processing.
It's still a 70-200.
You can get the exact same result if you crop the FX image in post processing.
I was going to say exactly the same thing. Why bother using the DX mode with a full frame lens? You can crop to suit you and get exactly the same result.
Mar 6, 2018 23:53:48 #
therwol wrote:
I was going to say exactly the same thing. Why bother using the DX mode with a full frame lens? You can crop to suit you and get exactly the same result.
I do crop in camera all the time with my D800 and D810 - I get a slightly faster frame rate, and more images on a card, and more images in a burst before the buffer fills up. I only do this when I know I am going to be cropping the image, like when I shoot birds and smaller wildlife. There is no advantage to shooting uncropped under those circumstances.
Mar 7, 2018 03:09:17 #
Pablo8
Loc: Nottingham UK.
rgrenaderphoto wrote:
So, on a Nikon D850 with a full frame 70-200 lens, if I put it the camera into Dx mode, do I get the 1.5% crop factor on the lens? So the 70-200 becomes a 105-300?
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Well, if you have got that equipment, why not do the test yourself? Should be a simple exercise.
Mar 7, 2018 05:49:19 #
You raise an interesting point that I am trying to get my head around. I am considering buying a new camera. Currently. I have a Nikon D7100 DX and am considering either the DX D500 or FX D850. Initially I was drawn to the D850 for among other reasons the 45+ mp sensor. But from what you have suggested I now believe the actual the pixel density across the smaller DX sensor image of the D500 will be a bit higher than the pixel density across the larger D850 image. So keeping all other factors the same, does the D500 provide equal or perhaps greater resolution?
riceman wrote:
The simple answer to your question is yes. You effectively convert your camera to a DX crop sensor camera. But I believe your pixel density remains the same so if your FF sensor has 45.7 mp over a 24x36mm sensor, in DX mode you now have 56% fewer pixels (56% smaller sensor area) so only 20.3 mp. As was noted, it’s like cropping your photo, only in-camera and not post.
Mar 7, 2018 06:13:07 #
The only advantage I see in doing this (I have a D810 and it does the same thing) is it increases frames per second the camera will shoot at.
Mar 7, 2018 06:39:22 #
rgrenaderphoto wrote:
So, on a Nikon D850 with a full frame 70-200 lens, if I put it the camera into Dx mode, do I get the 1.5% crop factor on the lens? So the 70-200 becomes a 105-300?
Yes, it becomes a 105-300mm lens, so you'll have to get a larger case.
Mar 7, 2018 06:41:48 #
MT Shooter wrote:
All you have done is "cropped" your image in camera instead of cropping it in post processing software.
So I would not unless you need snap shots or results without post.Mar 7, 2018 07:17:38 #
rgrenaderphoto wrote:
So, on a Nikon D850 with a full frame 70-200 lens, if I put it the camera into Dx mode, do I get the 1.5% crop factor on the lens? So the 70-200 becomes a 105-300?
But why would you?
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