PENTAX 110 50mm F2.8 Lens The mount is tentatively set to Q mount since there was no choice. It's originally a smaller mount for 110 cameras. About 20 years ago, there was a 110 film format, which was smaller than 35mm film. This is a standard lens for 110 cameras that used that small film. It doesn't seem to have any haze, but a small amount of dust can be seen. The focus ring etc. are smooth. The rear cap is a little loose.