.htaccess to display content directory

Link from a website to a directory on my apache server where I upload 10 to 500 images of a product I sell. The result is displaying the images of the folder on this url in a-z order. Depending on total size or number result is several pages with images. Bottom of page will have some text and links back to other pages of my website. eg. when I have now 200 images in folder I split them up in 4 sub folders with 50 images each /photo/1234/1/ /photo/1234/2/ /photo/1234/3/ /photo/1234/4/ 1234 = part number of product/ but I like to upload all photo;s to only one folder . When you contact me I can give an example I have seen on internet where this problem solved with rewriting a .htaccess file.