Change the camera resolutiion.

Digibrush

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My 640 xl still image properties detail showing horizontal and vertical resolution is 72 dpi.
bfB2UKO.jpg


I noticed some images taken with 640xl are 96dpi...
77QLkXv.jpg

Is there any option that I can change 72 dpi to 96dpi?

or i am doing something wrong...?
 

Daniel Gilbert M

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Did you edit that picture (96DPI) using some app ?
Because some of the exif data are missing, and the name tag is different (pro-e1429018031455-min-min....) , which suggests you have edited the picture.

However the first picture (mickey mouse) has the proper name tag and proper exif data.
 

Digibrush

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Only 1st picture (Mickey) is taken by me with lumia 640xl.

2nd image which describe detail of another picture, is the picture I downloaded from net as lumia 640xl smple image. Its not my own so i dont know it was edited or not.
unfortunately i missed the link from where i downloaded, still search for it.
But here is another example link of 96 dpi image:
http://windowsphonewiki.com/wp-cont..._Lumia640XL_DayLight_CameraSample-min-min.jpg
 

Digibrush

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Interesting comment about the DPI (dot per inch or sub-pixel per inch)
I have just compared a picture taken with my Nikon D90 (13MP) and my 640XL(13MP):

D90 Dimensions: 4288 x 2368
640XL Dimensions: 4208 x 2368
D90 DPI: 300
640XL DPI: 72

I have found an interesting webpage to explain the DPI:
https://www.nema.org/Communications/EI/Product-Showcase/Pages/What-is-a-High-Resolution-Image.aspx

More dpi mean better image quality. Thats why I try to find an option with which I can change 72dpi to 96 on 640xl.
Didnt find any...but there are many 640 xl sample image on internet which are 96dpi.
 

Derausgewanderte

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probably compression algorithm used in the camera app. Images with flat color range are probably saved at lower DPI, while images with a more dynamic range will be saved at 96. If we were able to use RAW or DNG we probably would see higher DPI. I can set to save DNG on my interop unlocked 640XL and compare the images.

edit: hmm, things have changed with recent builds I guess. the key worked for previous camera app but not for new one. Or it simply doesn't take the reg entry anymore.
 
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