Problem Quality of the Pictures as jpg on Smartphone

[C.R.]

Hello,

If i Export a Picture with 100% Quality as a jpg is the Quality i Copy on my Smartphone pixelatet (sorry for my English...hope u understand what i mean).

For a Test i Export the File as a Psd file and export the Picture in Photoshop under "save for Internet" as a jpg and copy this jpg on my Smartphone and this Picture has the good Quality that i need.

Looking for Help (maybe my bad, iam new at the Program Affinity Photo)

Thank u.

iput 2 pictures in the upload, one file is Affinity Photo and one is Photoshop.

The Photoshop has less mb than the Affinity file but is better on my Smartphone...

On the Computerscreen the 2 Pictures looking good, only after copy on Smartphone the Quality of the Affinity Picture is bad.

Thank u

Desktop.7z

Edited May 26, 2022 by C.R.

[Pšenda]

17 minutes ago, C.R. said:

If i Export a Picture with 100% Quality as a jpg

And size/resolution?

19 minutes ago, C.R. said:

Looking for Help

Screenshot? Compare images? Example file?

[C.R.]

The Size of the Pictures are 4000 x 6000 and 24Mp.

I have uploadet a Zip file with the 2 Pictures, maybe anyone can Help.

I have tested now with 3 Pictures and by all Pictures its the same Result.

Maybe its the Smartphone? But no Problems by the Photoshop pictures....

[Pšenda]

For me looks identical:

I would try to reduce the quality in APhoto to reduce the file size.

Images is exactly same:

Edited May 26, 2022 by Pšenda

[C.R.]

Hello thank u for your time,

At the Desktop on PC the Pictures look same but if i copy the Pictures on my Smartphone the Quality of the Affinity file is not good.

Have u try the Pictures of the Zip file? On pc or Smartphone?

Edited May 26, 2022 by C.R.

[thomaso]

5 hours ago, C.R. said:

only after copy on Smartphone the Quality of the Affinity Picture is bad.

How do you "copy" ? Since your Affinity .jpg has a larger file size maybe its forced to become reduced in the transfer process by an involved app?

What if you copy it from your smartphone back to your PC and then compare the images + their metadata?

[C.R.]

Hello

I copy the two pictures normaly on Smartphone.

I have try to load on email account and load ot from there but the same Result.

I think its a smartphonething? But i wonder the photoshop copy makes no trouble...

I upload a picture of my smartphone screen to compare the two pictures. If i load the pictures back to PC the Quality is good.

[Pšenda]

2 hours ago, C.R. said:

I copy the two pictures normaly on Smartphone.

Try smaller file size - half resolution, quarter quality (75%). 

[C.R.]

Hello,

at first i will say thank u to try to help me, but any other Idea without Quality downsize?

In Photoshop export is no problem, i dont will go to Photoshop anytime to save the work.

Thx

Edited May 29, 2022 by C.R.

[thomaso]

On 5/26/2022 at 7:56 PM, C.R. said:

Have u try the Pictures of the Zip file? On pc or Smartphone?

I can't unpack the .7z file. My macOS app appears to compress it once more (as ".7z.cpgz")

35 minutes ago, C.R. said:

but any other Idea without Quality downsize?

Obviously a matter how your phone, handling the two compressed files differently when opening / displaying them. As @Pšenda noted, they have different file sizes (aside the fact that Affinity jpg compression is not identically to the one by Photoshop). So you could try to export both with same file size result for instance, and/or check possible differences with a separate tool like the "exif tool" to compare compression details like encoding and sampling.