Table of Contents

Common Thread Sizes

Canon Cameras
JVC Cameras
Panasonic Cameras
Sony Cameras
Other Cameras

Step down rings can also be used to attach a Letus Adapter to your camera, if these conditions are met.

  1. The Adapter diameter MUST be larger than the lens diameter of your video camera

Example Step Up/Down Rings.
This ring can be used to attach an Extreme, Elite, or Ultimate with a 58mm thread ring to a camera with a 46mm filter thread.
This ring can be used to attach a Mini with a 43mm thread ring to a camera with a 46mm filter thread.

If your camera is not listed do not fear, there is a good chance that the Letus adapters will still work on your camera. We simply need find out what filter thread your camera lens has.

Determining Filter Thread Size

In order to determine the filter size of your camera/lens you can look in the documentation of your equipment or look to see if it is printed directly on the lens. The filter size is listed right after the the circle with a line through it. In the example below the camera lens has a 58mm filter thread and would need a Letus 58mm thread ring.

Filter Size

Camera Form Factor

Video Camera Sensors
Format Comparison
Format 2/3” Cameras 1/2” Cameras 1/3” Cameras 1/4” and smaller
Can achieve DOF1) Some A little Very little Virtually none
Can achieve DOF2) using a Letus adapter3) Yes Yes Yes Yes

2/3" cameras

The 2/3” camera system is a very high end camera that is used primarily in broadcast production work. These cameras are ENG cameras which typically means they have removable lenses and are shoulder mount cameras.

2/3” Camera examples:


1/2" cameras

The 1/2” cameras are the step between the smaller prosumer 1/3” cameras and broadcast 2/3” cameras. These cameras typically have 3 CCD or 3 CMOS sensors. Some 1/2” cameras also feature removable lenses.

1/2” Cameras examples:


1/3" cameras

Many prosumer cameras fall into this category. These cameras typically have 3 CCD or 3 CMOS sensors, some have removable lenses and some do not. There are several different formats used with 1/3” sensors, from small hand held cameras, to larger ENG style cameras.

1/3” Handheld Camears examples:


1/3” ENG Style Cameras examples:


1/4" and smaller cameras

Most consumer grade cameras fall into this format. These cameras are generally very small, hand held cameras. These camera usually have anywhere from 1 CMOS sensor to 3 CCD, and normally do not have removable lenses.

1/4” and smaller Cameras examples:

DSLR and HDSLR Cameras

TODO
http://prolost.com/blog/2009/12/3/you-didnt-believe-me.html
http://www.dvxuser.com/articles/article.php/20

1) , 2) Depth Of Field
3) How the adapters work