multiple image field for different setup ?

[adrianmak]

On some scenario, two different templates with an image field but having different setup

one template allowed for single image upload

another template allowed for multiple images upload

I'm thinking of is there any work around, instead of creating two separate image fields

[adrian]

Nope, there is no workaround for this and I don't really think there should be - call one "image" and one "images" (or similar) and it will be a lot simpler for you to remember which one belongs where and will also make more sense in your template API code.