Explanation of terminology in photography industry

Reverse film: it is a positive film, and the color it presents on the negative film is the actual color (the negative film is the opposite). It is called a reverse film because it is a negative film at the beginning of development, and it becomes a positive film when it is developed again after half exposure. The reversal film is developed by E-6 process, and the negative film is developed by C-4 1 process.

Bottom scan: It is the negative scanner, which can scan the film directly (135 or 120).

Viewer: After filming, you should check the quality of the film, but because the general 135 film is only 24MM*36MM, it is more troublesome to observe with the naked eye. Film browser is a tool (similar to a magnifying glass) that can enlarge and observe film images.

4B Plus 135 accessories have never been used, but this multi-shot is definitely not worth it. First, the image quality is not guaranteed. Second, the second-hand 135 film machine is already very cheap, so it is better to find a second-hand one.

Black-and-white printing amplification: First, you can buy a set of printing equipment, such as developing tank, liquid meter, liquid hygrometer, stirring rod, liquid storage bottle, timer, funnel, etc. There are also potions and complete sets for sale. Don't do it yourself. If you want to amplify it, you need an amplifier, which is rare and cheap, hundreds of dollars, expensive, hehe, I'm afraid you can't afford it.