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Dx vs 1.3x Setting on D500
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Mar 6, 2019 14:42:14   #
doclrb
 
The D500 includes a feature where one can chose between DX & 1.3x for image size. The 1.3x setting is said to ‘crop’ the image as a result of using a smaller portion of the sensor. I’m wondering if anyone on the list has experience to report with this setting and/or would describe pros and cons.

TY

doclrb

PS. My intent is not to ignite a debate over the crop sensor concept, actual focal length, etc.

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Mar 6, 2019 14:55:30   #
brent46 Loc: Grand Island, NY
 
My D7100 has the same feature. It really does nothing you can't do in post processing. I guess if you wanted to email a jpeg without post processing it would give you a 1.3 times telephoto image without editing. A 50mm lens would give you what a 65mm would.

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Mar 6, 2019 15:12:55   #
Screamin Scott Loc: Marshfield Wi, Baltimore Md, now Dallas Ga
 
You have more control over the crop in post if one is needed...It's not always easy to keep the subject within the 1.3x hash marks...

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Mar 6, 2019 16:17:37   #
larryepage Loc: North Texas area
 
doclrb wrote:
The D500 includes a feature where one can chose between DX & 1.3x for image size. The 1.3x setting is said to ‘crop’ the image as a result of using a smaller portion of the sensor. I’m wondering if anyone on the list has experience to report with this setting and/or would describe pros and cons.

TY

doclrb

PS. My intent is not to ignite a debate over the crop sensor concept, actual focal length, etc.


This crop is a horizontal rectangle within a horizontal rectangle. I use other crops (in FF cameras) fairly regularly, but have bene scratching my head over what this one could be for. The only think I can come up with is to avoid using the corners of a marginally performintg lens...

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Mar 6, 2019 18:57:20   #
Bill_de Loc: US
 
Why not see what Nikon has to say about it.

1.3x crop of DX that enables shooting distant subjects without bulky equipment, for both stills and movies [NEW]
The D7100 features two image areas for still images — DX format (23.5 x 15.6 mm) and 1.3x crop of DX (18.8 x 12.5 mm). The format in use can be easily confirmed in the viewfinder. For videos, the D7100 also employs DX-based movie format and movie image area based on 1.3x crop of DX.
In DX format, the angle of view becomes equivalent to that of a lens with approx. 1.5 times longer focal length*1. In the newly employed 1.3x crop of DX mode, it becomes equivalent to that of a lens with approx. 1.3 times longer focal length*1 than in DX format. As a result, the angle of view becomes equivalent to that of a lens with about double the focal length*1. With this camera, you can get closer to distant subjects even though it employs a relatively lightweight, compact lens system. In the 1.3x crop of DX mode, the 51 focus points cover nearly the entire frame, attaining extremely high capturing power even when shooting moving subjects.


Shot in 1.3x crop of DX mode, using a 500mm lens attached (angle of view: equivalent to 1000mm focal length*).
*When converted to 35mm format.
The 1.3x crop of DX achieves an image size of approx. 15.4 megapixels, a sufficiently high pixel count for general use, which delivers high-resolution images. Combined with high-speed continuous shooting at up to approx. 7 fps*2 enabled in this mode, this camera reliably captures moving subjects.
With the D7100's compact, lightweight body that can only be realized by a DX-format D-SLR, combined with compact, lightweight lens system, you can travel light but still depend on it to capture decisive moments in high-speed continuous shooting, while precisely acquiring distant subjects with its high-performance AF system.

*1When converted to 35mm format.
*2With JPEG/12-bit NEF (RAW). Maximum approx. 6 fps in DX mode with the same image quality. Based on CIPA Guidelines.


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Mar 6, 2019 20:33:31   #
larryepage Loc: North Texas area
 
Bill_de wrote:
Why not see what Nikon has to say about it.

1.3x crop of DX that enables shooting distant subjects without bulky equipment, for both stills and movies [NEW]
The D7100 features two image areas for still images — DX format (23.5 x 15.6 mm) and 1.3x crop of DX (18.8 x 12.5 mm). The format in use can be easily confirmed in the viewfinder. For videos, the D7100 also employs DX-based movie format and movie image area based on 1.3x crop of DX.
In DX format, the angle of view becomes equivalent to that of a lens with approx. 1.5 times longer focal length*1. In the newly employed 1.3x crop of DX mode, it becomes equivalent to that of a lens with approx. 1.3 times longer focal length*1 than in DX format. As a result, the angle of view becomes equivalent to that of a lens with about double the focal length*1. With this camera, you can get closer to distant subjects even though it employs a relatively lightweight, compact lens system. In the 1.3x crop of DX mode, the 51 focus points cover nearly the entire frame, attaining extremely high capturing power even when shooting moving subjects.


Shot in 1.3x crop of DX mode, using a 500mm lens attached (angle of view: equivalent to 1000mm focal length*).
*When converted to 35mm format.
The 1.3x crop of DX achieves an image size of approx. 15.4 megapixels, a sufficiently high pixel count for general use, which delivers high-resolution images. Combined with high-speed continuous shooting at up to approx. 7 fps*2 enabled in this mode, this camera reliably captures moving subjects.
With the D7100's compact, lightweight body that can only be realized by a DX-format D-SLR, combined with compact, lightweight lens system, you can travel light but still depend on it to capture decisive moments in high-speed continuous shooting, while precisely acquiring distant subjects with its high-performance AF system.

*1When converted to 35mm format.
*2With JPEG/12-bit NEF (RAW). Maximum approx. 6 fps in DX mode with the same image quality. Based on CIPA Guidelines.


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Why not see what Nikon has to say about it. br b... (show quote)

Ok.

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Mar 7, 2019 05:50:03   #
mikeg492 Loc: WIlmington, NC
 
Works great for sports. I switch back and forth all the time. Basically you are taking a 17mp image instead of a 24mp which is still usable for a sizable print.

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Mar 7, 2019 06:18:10   #
doclrb
 
Thanx to all for the helpful discourse.

doclrb

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Mar 7, 2019 09:01:30   #
billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont
 
doclrb wrote:
The D500 includes a feature where one can chose between DX & 1.3x for image size. The 1.3x setting is said to ‘crop’ the image as a result of using a smaller portion of the sensor. I’m wondering if anyone on the list has experience to report with this setting and/or would describe pros and cons.

TY

doclrb

PS. My intent is not to ignite a debate over the crop sensor concept, actual focal length, etc.


Yes, it uses less of the sensor so LESS MEGAPIXELS, it reaches further out for your lenses, but at a cost of Megapixels.

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Mar 7, 2019 09:39:46   #
olemikey Loc: 6 mile creek, Spacecoast Florida
 
It works in my D7100 for greater reach without light loss, the resulting 15MP (w/D7100) pictures come out very well with good lens and good technique, it's just another tool in the box, and with no light loss (like a tele-extender) it can be handy. Yes you can crop in post, but this gives you a "frame full" shot to start, that you might not catch otherwise, and 15MP still gives you a lot to work with.

Does it replace having a quality $5K tele, no, but it will give you a frame filling shot, and still have good sharp pixels, and not compressed, just (in my case) 15MP instead of 24MP. How many might you lose in a tight crop in PP?

Another tool to use when needed.

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Mar 7, 2019 11:38:05   #
Bill_de Loc: US
 
olemikey wrote:
It works in my D7100 for greater reach without light loss, the resulting 15MP (w/D7100) pictures come out very well with good lens and good technique, it's just another tool in the box, and with no light loss (like a tele-extender) it can be handy. Yes you can crop in post, but this gives you a "frame full" shot to start, that you might not catch otherwise, and 15MP still gives you a lot to work with.

Does it replace having a quality $5K tele, no, but it will give you a frame filling shot, and still have good sharp pixels, and not compressed, just (in my case) 15MP instead of 24MP. How many might you lose in a tight crop in PP?

Another tool to use when needed.
It works in my D7100 for greater reach without lig... (show quote)


It wasn't too long ago when 10MP was the cat's meow. Every time higher megapixel cameras are released we suddenly can't print more than an 8x10 with 5MP. Hogwash!

According to Nikon the 1.3 is the crop factor from DX, not from FF. So you are getting the field of view of a lens that is twice as long, and it doesn't cost a dime.

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Mar 7, 2019 13:45:43   #
olemikey Loc: 6 mile creek, Spacecoast Florida
 
Bill_de wrote:
It wasn't too long ago when 10MP was the cat's meow. Every time higher megapixel cameras are released we suddenly can't print more than an 8x10 with 5MP. Hogwash!

According to Nikon the 1.3 is the crop factor from DX, not from FF. So you are getting the field of view of a lens that is twice as long, and it doesn't cost a dime.

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I still use my D90 regularly @ 12.3MP, 10, 16 & 20MP Sony cameras, and Canon 8MP and done right they make fine enlargements. Did I mention the "no f-stop pain, no light loss" of the 1.3 crop...…. .. It's another option, and really a good option, for when you need it, some will find it quite useful, some will never even try it.

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Mar 7, 2019 15:48:12   #
amfoto1 Loc: San Jose, Calif. USA
 
I never use any in-camera crop options. If you think about it, they serve no real purpose. You can accomplish EXACTLY the same thing in post-processing, but with better control over the crop.

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Mar 7, 2019 16:34:18   #
DaveO Loc: Northeast CT
 
amfoto1 wrote:
I never use any in-camera crop options. If you think about it, they serve no real purpose. You can accomplish EXACTLY the same thing in post-processing, but with better control over the crop.


There is that assumption, again, that everyone does post processing...

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Mar 7, 2019 17:02:31   #
olemikey Loc: 6 mile creek, Spacecoast Florida
 
amfoto1 wrote:
I never use any in-camera crop options. If you think about it, they serve no real purpose. You can accomplish EXACTLY the same thing in post-processing, but with better control over the crop.


It is "user choice" and does accomplish the same thing, point is valid. Another view - If I'm happy with SOOC framing, focus and exposure, and am able fine tune and frame the shot in the way I intended, and the result, based on (in camera) crop meets my expectations, how can there be a complaint? Especially if I have little or no PP do do afterward. For the inexperienced photographer it may be a toy, but for an experienced photographer it is another tool, another option if needed, in the field. If it was a "digital" crop like Sony's A-mount cameras have, I wouldn't be using, but since it is an optical crop, I like and use it. The SOOC crowd must be in love with the option. For most it will simply be a matter personal preference, there is no win or lose with it. My $.02, YMMV.

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