Benefit/drawback of setting a DX crop factor on a Nikon FX camera versus a 1.4 Teleconverter versus cropping in PP.
The DX crop reduces the pixel resolution of the resulting image file. Let's take a 24MP camera like the D750. Your largest option for the DX crop gives you 10MP files. Throwing away all those pixels could be a pretty poor setting if you need to do more with that image file than what the camera gives you.
A teleconverter 'enlarges' the image circle over the sensor, in the case of 1.4x by 40%, where the sensor then 'crops' a full-resolution image from that enlarged image circle, such as 24MP of the D750 example above. There's more glass involved in this magnification, so you lose 1-stop of light / effective aperture. And, depending on the equipment, there may be a noticeable loss of image quality, although typically not by much from the major brands like Nikon or Canon extenders and lenses.
MRHooker2u wrote:
Benefit/drawback of setting a DX crop factor on a Nikon FX camera versus a 1.4 Teleconverter versus cropping in PP.
Quality-wise, cropping in PP gets you to the same place as using DX crop mode in-camera, but shooting FF then cropping gives you far more framing possibilities compared to using DX mode.
I use DX mode on my D750 when I want the smallest possible file-size. (Also go to "Small, Basic, Size Priority" jpeg. settings) Gets around 500-600 kb files, good for sharing out to friends with cell phones, internet sites, or for documents.
Robertl594
Loc: Bloomfield Hills, Michigan and Nantucket
ELNikkor wrote:
I use DX mode on my D750 when I want the smallest possible file-size. (Also go to "Small, Basic, Size Priority" jpeg. settings) Gets around 500-600 kb files, good for sharing out to friends with cell phones, internet sites, or for documents.
Personally, I would only use the largest file size when capturing. You can reduce the size of the files in post. What happens if you get the photo of a lifetime and it is in basic JPEG tiny image? Not much you can do but wish you had a larger file size for printing.
Of course, it depends on your ultimate use of your images.
CHG_CANON wrote:
The DX crop reduces the pixel resolution of the resulting image file. Let's take a 24MP camera like the D750. Your largest option for the DX crop gives you 10MP files. Throwing away all those pixels could be a pretty poor setting if you need to do more with that image file than what the camera gives you.
A teleconverter 'enlarges' the image circle over the sensor, in the case of 1.4x by 40%, where the sensor then 'crops' a full-resolution image from that enlarged image circle, such as 24MP of the D750 example above. There's more glass involved in this magnification, so you lose 1-stop of light / effective aperture. And, depending on the equipment, there may be a noticeable loss of image quality, although typically not by much from the major brands like Nikon or Canon extenders and lenses.
The DX crop reduces the pixel resolution of the re... (
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Thanks. I found that really helpful, and I didn’t even ask the question.
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