Any suggestions on images gallery site

Hi Zenners, I'm trying to set up a website mainly for images gallery with all my photography works using my new DSLR camera.

To start with i like to make these images free to down load for all users, then maybe selling them at a later time. :D

What i notice is zencart only have option for people to buy things which they have to add something to their cart at a price. even with free item, they still have to add to cart.

Is there a way I can add images as "products" where users can view images with their browser and able to download images at different resolution without add to cart? and other images can have option add to cart at a later time.

Not too sure if this is possible.

Your suggestion and recommendation will be very much appreciated.

One way would be to insert links in the product description to the various resolutions of images.

Hey Stevesh, I was thinking of doing as you suggested to add links to different images. For security purpose i'm worry about users can follow these links to access the free images as well as some not free images.
Is there a secured ways I can add images which in Admin>Catalog>Categories/Products> already have an option to add image when creating new product, and this is very good and easy to managed.
Any thoughts for security access.

Oh well, look like i have to use the attributes for different resolutions as download after users add to cart. Its more secured this way. It would be great if there is an add on for downloads without add to cart.

If anyone come across with an add on like this, please let me know. Very much appreciated.