现在市上流行的许多傻瓜相机如理光XF—30D、汤姆M—800D、M—900D等都具有日期合成与显示功能,可将拍摄日期或时刻自动叠印在底片上,冲扩后在照片右下角留下红色时间标记,很受广大消费者的欢迎。本文以汤姆M—900D型相机为例,介绍日期合成原理及常见故障的排除方法。 Nowadays, many point-and-shoot cameras such as Ricoh XF-30D, Tom M-800D, M-900D and so on have the function of date composing and displaying. They can automatically superimpose the filming date or time on the film. Under the red time mark, very popular with consumers. This article takes Tom M-900D camera as an example, introduces the date synthesis principle and common troubleshooting methods.