Rolleiflex

The Rolleiflex twin lens reflex (TLR) cameras were known for their compact size, reduced weight, superior optics, durable and simple mechanics and bright viewfinders. An ingenious tapered mirror allowed the size of the viewing lens (the top lens) 'internal compartment' to be reduced, and this smaller compartment was dovetailed with the bottom taking lens 'compartment', which decreased the overall size and weight of the camera. The lenses were high quality and were manufactured by Zeiss and Schneider, which differentiated the Rolleiflex from its competitors. The mechanical wind mechanism also allowed for quick semi automatic film loading.

-Mark Glaser

Long Exposure Photography

the world of traditional photography, the ISO (formerly ASA) represents the speed of photographic negative.  ISO speed has a direct effect on the combination of shutter speed / aperture of the diaphragm. In an environment where the light is insufficient, and for various reasons you can’t use the flash, the only option available to capture the scene with a correct exposure is to increase the ISO speed.

When a scene includes both stationary and moving subjects (for example, a fixed street and moving cars or a camera within a car showing a fixed dash-board and moving scenery), a slow shutter speed can cause interesting effects, such as light trails.

Long exposures are easiest to accomplish in low-light conditions, but can be done in brighter light using neutral density filters or specially designed cameras.

Night photography

 photo by MumbleyJoe - exposure: 114 sec

Photo by Express Monorail (°O°Joe) - Exposure: 10.9 sec

By leaving the camera's shutter open for an extended period of time, more light is absorbed, creating a brighter product. If the camera is stationary for the entire period of time that the shutter is open, a very vibrant and clear photograph can be produced

 

 

 

Light painting

 photography by BUR?BLUE - Exposure: 656 sec

 

In this technique, a scene is kept very dark and the photographer or an assistant takes a light source—it can be small penlight—and moves it about in patterns. The light source can be turned off between strokes

 

 

 

Water and long exposure

  

photography by Forest Wander- Exposure: 30 sec

Long exposures can blur moving water so it has mist-like qualities while keeping stationary objects like land and structures sharp

- Helena Salvo