Standard paper size aspect ratio

[thebeardedgroundsman]

The international standard paper size is the "A" system (A5, A4, A3 etc) that has an aspect ratio slightly narrower than the 3:2 ratio offered in camera.

I know it is possible to customise or crop an image to fit the "A" ratio in editing (although even here I find I have to make a custom setting). Is it possible for Sony to offer the A ratio in their aspect ratio settings in camera? I'm sure this would be appreciated by the many photographers who print at home.

[Pieter]

I'm sure Sony can offer any aspect ratio you want, be it 1.5:1 (35 mm film ratio), 1.333:1 (4:3 full screen ratio), 1.414:1 (ISO 216 paper ratio) 1.618:1 (golden ratio), 1.778:1 (HD 16:9 ratio), or any other arbitrary ratio you can come up with. But even if Sony made a custom aspect ratio equal to default print size, you'd still need scissors to manually crop the printing margins.

[thebeardedgroundsman]

Thanks Pieter, printing margins are not a problem, as my printer can print borderless. The problem is that I have to make a custom mount when framing the print as an A3 mount leaves a white strip above and below the image, or the sides of the image are cut off. An "A"( or ISO 216) ratio would just make life so much easier.

[FunWithCameras]

I find that when I want to leave a uniform border (say 1cm for mounting) around my A sheet (be it A4, A3, or A2), the image has to be cropped to a slightly different ratio, depending on the sheet size. So I've worked out the pixel dimensions I need, and crop and rescale to suit - I've found that rescaling in Photoshop gets me better prints than letting the printer do it.