Yes—there are several photography-focused proofing services built for this use case. Community recommendations include SmugMug, Zenfolio, and PhotoShelter, all of which offer privacy and client-gallery features such as password protection, watermarking, and controls that limit casual downloading or viewing of full-size files. Other services mentioned were ShootProof, Instaproofs, Photobiz, Photocart, aPhotoFolio, ShowItFast, Livebooks, Redcart, Photography Orders, and ProPhoto Blogs.

The best choice depends on which combination of proofing, privacy, and sales tools fits your workflow. In general, look for: password-protected or unlisted galleries, watermarking, display-size limits, and built-in commerce or ordering tools if you plan to sell prints or downloads.

One caveat: no web gallery can make images impossible to copy, but these services can make downloading and casual misuse much less convenient than general photo-sharing sites like Flickr.