If I understand correctly...

You can write own function
http://doc.silverstripe.org/framework/en/reference/image
Just put it in the Controller

Sorry for my bad English

But normaly i have to define a variable in the page.php or object.php and with this variable i can get the saved content to the templates.
I mean which is the variable here to get the Images?
I don't want to use $SetWidth(xx) i want the image wit its original size.

and even if I write a function. I stil have to put a variable inside?!

or?

Sorry, I misunderstood :)

I think that the best solution would be to use this form:

<img src="$URL" />

then you will have the original size

Sorry for my bad English

Thx a lot! :)

And your english is not more worse than mine ;)

Great share by svandragt. If you're using Silverstripe 3 this works perfectly, adds multiple images and gives you the flexibility to structure the template page appropriately. Perfect!