View at 100% is different than View at Pixel Size in document units other than pixels

[Cam]

I was wondering why when the document units are set in something other than pixels, such as inches, setting the View at 100% is different than View at Pixel Size?

 

For example, when selecting the Page Preset > Letter, if you set the view at 100% it zooms the document in further than setting the view at Pixel Size.

 

Shouldn't the View > 100% behaviour be consistent across all document unit types?

 

Thanks

[Ben]

Because we size to the physical size of your document when you use any mode other than Pixel.

 

So 1inch in your document will be 1inch on screen.  The actual pixel size is dependant on your documents DPI.  So, for a 300dpi document, if you view in inches, one inch on screen will cover 300 document pixels at 100% (for a 144dpi screen an inch will use 144 screen pixels).  If you change to pixel mode, we show you the actual pixels, so 100% will then be a lot bigger as 300 document pixels will be rendered as 300 screen pixels.

[Cam]

Thanks for explanation Ben.