After the photo shoot, I took a lot of photos, and finally only 20 were selected. Will they give us the rest of the negatives?

It depends on your agreement. According to the principle of buying and selling, a "transaction contract" is established (that is, it has legal effect) when the merchant issues a receipt and the buyer pays all the expenses (or part of the deposit). If the merchant says that the result of a certain price (photography+development specification × number of sheets) is equivalent to limiting the delivery specification and quantity. The electronic version outside is not within the scope of commitment, and of course it will not be given to you.

Film photography should reserve the original in advance (divided into "whole roll" shooting or single sheet shooting. In the former, you must deliver the film that you have completely developed without cutting; The latter basically has no such problem-just return a negative to you when you send the photo. )

If you have discussed before (or the merchant has informed in advance) that the unit price of each photo (digital version) will not be printed, you can select photos and multiply the selected quantity by the unit price to pay the other party-get your digital photos back.

Need to be reminded: the digital versions of other photos must be completely destroyed in the camera and computer of the merchant by the buyer and the seller themselves! This is a legal responsibility identification problem involving portrait right.