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When I open a CR2 file in Develop Persona, it has a wrong pixel size for both my cameras (EOS 50D and EOS 5DMII).

Canon EOS 5DII   5616x3744
Develop Persona   5634x3753

Canon EOS 50D   4752x3168
Develop Persoan   4770x3177

And when I export the files, the ratio is not correct (1200x799 instead of 1200x800)


Affinity Photo 1.7.2.471  |   Affinity Designer 1.7.2.471 | Affinity Publisher 1.7.2.471

Windows 10 Home 64bit 1903 | Intel Core i7 8750H @ 2.2 GHz | Nvidia GeForce GTX 1060 | Intel UHD Graphics 630 | 16 GB Dual Channel DDR4

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For the first part of your question: camera sensors are larger than the advertised size, and the manufacturers recommend throwing away the pixels at the edge as the sensor may be less accurate at the edges.

Unlike other applications, Affinity Photo chooses to include them rather than automatically cropping then off. That way you get to choose whether those pixels are useful to you.


-- Walt

Windows 10 Home, version 1903 (18362.356), 16GB memory, Intel Core i7-6700K @ 4.00Gz, GeForce GTX 970
Affinity Photo 1.7.3.481 and 1.8.0.486 Beta   / Affinity Designer 1.7.3.481 and 1.8.0.486 Beta  / Affinity Publisher 1.7.3.481 and 1.7.3.475 Beta

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Thanks for the quick answer. So if I want the "original" size, I crop to 3:2 custom ratio. Do I have to do that with every file or is there an option in Preferences?


Affinity Photo 1.7.2.471  |   Affinity Designer 1.7.2.471 | Affinity Publisher 1.7.2.471

Windows 10 Home 64bit 1903 | Intel Core i7 8750H @ 2.2 GHz | Nvidia GeForce GTX 1060 | Intel UHD Graphics 630 | 16 GB Dual Channel DDR4

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21 minutes ago, walt.farrell said:

For the first part of your question: camera sensors are larger than the advertised size, and the manufacturers recommend throwing away the pixels at the edge as the sending may be less accurate at the edges.

Unlike other applications, Affinity Photo chooses to include them rather than automatically cropping then off. That way you get to choose whether those pixels are useful to you.

That's easily seen just by doing the math. My 70D is reported (sold) as a 20.1MP, 5472 X 3648 = 19.9 is what LR and others say it is. AP shows it as 5496 X 3670 = 20.1, which is what the advertised mega pixels are.


Affinity Photo 1.7.2.471 ; Affinity Photo Beta 1.7.2.464; Win10 Home Version:1903, Build: 18362.207: Intel Core i7-4770, 3.90GHz, 32GB Ram, Nvidia GTX 645, 3-Internal HDD (1 Crucial MX5000 1TB, 1-Crucial MX5000 500GB, 1-WD 1 TB), 4 External HDD

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3 minutes ago, owlp said:

Thanks for the quick answer. So if I want the "original" size, I crop to 3:2 custom ratio. Do I have to do that with every file or is there an option in Preferences?

If there were an option I think it would be in the Develop Assistant (View > Assistant Manager, then click on the button for the Develop Assistant). But there isn't one, that I know of.


-- Walt

Windows 10 Home, version 1903 (18362.356), 16GB memory, Intel Core i7-6700K @ 4.00Gz, GeForce GTX 970
Affinity Photo 1.7.3.481 and 1.8.0.486 Beta   / Affinity Designer 1.7.3.481 and 1.8.0.486 Beta  / Affinity Publisher 1.7.3.481 and 1.7.3.475 Beta

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5 minutes ago, owlp said:

Thanks for the quick answer. So if I want the "original" size, I crop to 3:2 custom ratio. Do I have to do that with every file or is there an option in Preferences?

Affinity Photo is giving you the original, or actual  size of your cameras sensors. Other apps like LR throw away the extra pixels at the sides.


Affinity Photo 1.7.2.471 ; Affinity Photo Beta 1.7.2.464; Win10 Home Version:1903, Build: 18362.207: Intel Core i7-4770, 3.90GHz, 32GB Ram, Nvidia GTX 645, 3-Internal HDD (1 Crucial MX5000 1TB, 1-Crucial MX5000 500GB, 1-WD 1 TB), 4 External HDD

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