Navigator zoom level

[Markio]

I have trouble understanding what the zoom level in the navigator studio means. If I have created a document canvas with a width and height in mm and a grid of 10 mm, I would expect to see a grid of 10 mm at a zoom level of 100%. But AD gives a grid of about 20 mm at 100%. Is there a setting I am missing?

[AllAppsUser]

Yes, the help in both apps does not specifically talk about these does it.

My little experiment...

AF Photo - iPad

1. 6 inch wide / 1,800 px wide (300dpi)  - 50% displays 3.5 inches wide
2. 6 inch wide / 900 px wide (150dpi) - 50% displays  1.75 inch wide

So AF Photo is zooming here by calculating something relative to the dpi,  but drifts a bit because of some error in there (See edit below).

AF Designer - iPad

1. 6 inch wide / 1800 px wide (300dpi) - 50% displays 6 inch wide exactly... double checked.. that's the 50% button in Navigator studio
2. 6 inch wide / 900 px wide (150dpi) - 50% displays same as above.
3. Another document 11.95 inches wide / 3,585 px wide (300 dpi) - 50% displays 9.75 inch wide (should be 5.975 inches wide) - or if 50% is the new 100% as with the 6 inch document, then it's still wrong. It appears to be behaving different from the 6 inch document... and brain fog decends here

EDIT...

The screen resolution of my iPad is supposed to be 264 ppi (Pixels per inch). So a 1,800 px wide image displayed at 50% using 264 ppi calculates out as 3.4 inches... see number 1 above which I think I rounded-up (AF Photo). So AF Photo is displaying the zoom by using dpi and screen resolution - ignoring millimetre, centimetre and inches settings?

What AF Designer is doing... I haven't checked this.. but I surmise it might be displaying the image by translating inches into screen resolution....? Though 3 throws a spanner in there...? LIke I say, I've suddenly come over tired and am struggling so I'll abandon this now.

 

[Markio]

Thanks @ProDesigner for your research,

the zoom levels in AD for a document with sizes in mm display as 50% in navigator actually is 100% on screen

and 100% in navigator is 200% on screen. 

[walt.farrell]

6 minutes ago, Markio said:

the zoom levels in AD for a document with sizes in mm display as 50% in navigator actually is 100% on screen

and 100% in navigator is 200% on screen. 

What is your document DPI?

If it's 72DPI (or 144DPI, perhaps) then you may be seeing an effect of the Retina-display support in the Affinity applications.

[Markio]

@walt.farrell

I always use 300 dpi, and mostly one of the A-sized (A1- A4) documents/artboards.