Printing Photos from iOS via AirPrint

I recently got my first AirPrint enabled printer (Canon MG5350). I've been playing around with printing photos from my iPhone via both AirPrint (through the gallery app) and Canon's iEPP app. My main issue is that there seems to be no way to resize photos. If I have A4 paper loaded, the photo will print as large as A4 allows, instead of letting me scale it down.

There also seems to be no option to print multiple photos per page.

Is this a limitation currently present in AirPrint/iOS7 or is there a way to do this?