Holga 135

The Holga 135
camera is a simple plastic camera, often called toy camera, which appeared late on the market in 2005, when real film cameras were already disappearing. Like for the Holga 120 more than 20 years earlier, it is said that the Chinese had an overstock of film, but no cheap 135 cameras anymore. It had some success on the Chinese market, but much more succes internationally with the Lomography movement. Lomography sold Holgas via their company.

The Holga 135 and the 135 BC (Black Corner) are the same cameras except a frame in the BC to create more vinetting.
The lens is simple 47mm plastic meniscus lens with some vignetting, more pronouced on the BC. Light leaks are frequent, you may have to put black tape over the seams. It has only one shutter speed of ~1/100s and 2 F-stops, sunny and cloudy, supposed to be ~F11 and ~F20.. There are plenty of variants, a pinhole version, panoramic one, a TLR-version and even a twin-lens-on-one frame version, TIM. Plenty of accessories are available and a Holga community of DIY enthusiasts.

This camera is an ordinary 135.
Its main features are:

47mm simple plastic menikus lens, ~F11 and F20, zone focus 1- 
Shutter ~1/100, B
Size 115x75x65,  Weight 170 gr.
cable release, hot shoe

Camera front.

Camera back. Viewer and film advance.

Camera top. Rewind, hot shoe, Shutter release with cable socket and film counter. Between body and lens: F-switch, only sunny and cloudy. On the lens barrel: distance setting via symbols.

The counter is tiny and sits deep inside.

Camera bottom. Rewind release, tripod socket, speed selector.

Film compartment.

The Holga 135 is a basic plastic camera with only one speed, no automatic exposure, no automatic film advance, no autofocus, not even a rangefinder, cheaply made plastic lenses that produce heavy vignetting and random results.

Probably because it's more solid than others, it has attracted more DIY people, Holga-mods are famous. There are plenty of discussions across the forums worldwide about the Holga. You shoud read some of them, they are interesting. As for the Diana, I don't think about measuring, I guess and I try. So for me the Holga is a nice find.