35mm Depth of field Adapters

These adapters enable movie or stills lenses to be used on video cameras, by having the video camera record an image focused on to (usually) a ground glass screen similar in size to the lenses coverage at the film plane (film camera's gate area). This then keeps the focal length and depth of field of the lenes as it would be on the movie/stills camera it was designed for. Also, on the ground glass at least, there is no chromatic aberation introduced. The downside is the ground glass introduces a loss of light and sharpness depending on the quality of components and design.
The simpler designs also invert the image (much as a film camera does!) and this has to be inverted again in editing.
Far from being made obsolete by the introduction of large sensor consumer stills cameras with video capability, the DoF adapter market has matured to produce very capable and sophisticated shallow depth of field solutions.
** = spinning disc adapter
## = vibrating ground glass (vgg)
%% = static systems

in no particular order:
Agus35 - perhaps the original design, by Agus Casse.

PS technic mini35** (Germany) website
probably the best of the image flip adapters (and most expensive)
though I used one recently and dust on the prism was visible in the viewfinder and final footage (Z1).
There is also a "Pro" version for HDcam cameras. Hire in the UK: icefilm, Visual Impact, Take Two Film Services, Film 38 and FAVA Rental Ltd. contact nos here or here

Redrock M2** (US) contact Brian

Letus35**(US) [designer: Quyen Le]

Letus35 Flip**(US)

SG 35mm adapter** - SG35 Pro (UK) [designer: Wayne Kinney]

Cinemek G35 contact Jonathan Houser

Go35 - Go35HD test footage

Brevis35 ## (Cinevate, Montreal) more on the "FC" Brevis adapter

Movietube(Germany, or in the UK, www.camerafilters.co.uk )

MekAdapter35 website

APEFOS (Brazil) website (static and vibrating glass versions from $45, so a cheap way of trying out the concept!) demo footage

El Da Vinci DiGi35 %% [designer: Tony Relph]

DIY probably the best site for vibrating GG holders: www.jetsetmodels.info

comparrisons here:

http://www.dvxuser.com
http://www.dvinfo.net/conf/showthread.php?t=59183

interesting examples
http://www.cinematography.com/forum2004/lofiversion/index.php?t15727.html
High end setup: Panasonic varicam with Brevis and fibre optic screen (www.motionfx.gr)