This Raynox extension DCR150 tube kit and appropriate thread adapters to allow you to attach most types of microscope objectives direct to your camera's bayonet mount. This handy kit gives you a great deal of flexibility. Extra tubes may be required depending on the optical tube length printed on your microscope objective (eg 160mm).
(See also our Raynox reversing kit which improves the performance of this system with improved edge sharpness - UM1022C, this is a worthwhile purchase with this item)
This package contain products as below
1, Camera bayonet to M42 mount - this is camera specific please select from the list
2, Three M42 extension tubes. Each tube is about 5 cm long. If you need one more please see: extension tube
3, Raynox DCR 150 with reversed adapter
4, M42 to RMS adapter or M42 to M26 .Please choose the thread type according to your objective lens.
5，One piece of photo-black lining tape （about 15cm*25cm ,approximate）Cut and Stick or just put the black velvet inside the M42 tube to reduce the internal light reflection in the lens and improves the contrast of the picture.
6,The height of Sony E mount is 26.6mm.
The objective lens in the pictures is not included.
For the best image quality,it is better to set the raynox lens to focus on infinity.
The focus infinite distance from Raynox DCR 150 to camera sensor is 204 mm.The focus infinite distance from Raynox DCR 250 to camera sensor is 118 mm.(approximate)
The best M42 extension tube length =
Raynox focus infinite distance (such as 204 mm or 118 mm) – Flange_focal_distance
if your camera is Canon 5D2,and you use raynox DCR 150 reversed as the tube lens, the best length of the extension tube = 204mm - 44mm = 160 mm.
Raynox DCR 150 is in the reversed position.