SLR Xiaobai Consulting: After a long exposure, I am not good at using Pentax ks2. I didn't know that I had been pressing the shutter until today. How about telling the photographer not to?

As long as you buy a HOLD lock, door B (usually more than 30 seconds) can slide HOLD to lock the shutter and then time it yourself. Long exposure for a few seconds is not a problem.

Electronic wire release is advanced and the setting is complicated. You can set the exposure time, interval shooting, etc., for example, 60 seconds for one film, 50 consecutive shots, and x seconds for each film.

Ordinary cable distribution costs tens of dollars.

Electrons are more expensive, ranging from one hundred to several hundred.

Generally speaking, if it is not time-lapse photography, ordinary is enough.