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High-quality photographic and HD video documentation with the Zeiss slit lamp and Zeiss Surgical microscopes (OPMI) 

The LM digital adapter for Zeiss slit lamps and surgical microscopes (SL120, SL130) makes it possible to produce high-level photographic and video material of up to 36 megapixels using DSLR cameras and system cameras without any difficulty. It is also very easy to transmit live feeds to an HD monitor. 

Zeiss split lamp, LMscope adapter for Canon DSLR

Compared to C-mount cameras with small sensors (1/2”, 1 1/8”, 1 2/5”), digital SLR and system cameras offer great advantages. The most obvious difference is the sensor size. C-mount cameras with small sensors (left-hand image) cannot utilise the full potential of the camera. 

c-mount camera with small sensor

DSLR with big sensor Canon APS-C

In comparison to them, DSLR and system cameras have very large sensors, something that is clearly evident from the image quality. The most important advantages of DSLR and system cameras are summarised below:  

For Zeiss slit lamps and surgical microscopes (OPMI), Zeiss itself offers original beam splitter modules

  Zeiss slit lamp with Interface   

These connections have an internal diameter of 33 mm and come with a cap nut for attaching the devices together.

Zeiss OPMI Interface internal diameter measurement 

Zeiss OPMI beamsplitter adapting for photography

For this connection we offer a simple, high-quality adapter solution, which is fitted directly onto the beam splitter.

adapter solution for Zeiss OPMI

This solution makes it possible to use all conventional DSLR and system cameras with the instrument (Zeiss slit lamp and OPMI). Only the camera body (without lens) is needed for the connection. The LM DSLRFOPMI adapter is the ideal solution for cameras with APS-C and four-thirds sensors. The largest possible image field is obtained without peripheral darkening (vignetting).

Zeiss OPMI LMscope digital Adapter for cameras

If, in addition to the beam splitter, a photo adapter (video adapter) is also available, there are other possible solutions. Zeiss offers this photo adapter with different focal lengths (from 85 mm to 140 mm) with a standardised C-mount connection

Zeiss split lamp OPMI c_mount Verbindung 

Zeiss split lamp c-mount 75 mm focal width

The C-mount connection is a standardised connection for cameras with an external diameter of 25.4 mm. Due to this industry standard it is possible to use a large number of C-mount and USB cameras. As a rule, these cameras have a very small sensor (1/2“ in most cases). However, using the LM digital adapter, DSLR and system cameras can be attached to this photo adapter with C-mount connection without any difficulty. 

     zeiss slit lamp photo port LMscope Adapter

The adapter solution depends on the camera used and the focal length of the photo adapter. In each case, the image should be full frame and there should be no peripheral darkening. Photo adapters with integrated iris diaphragms (see arrows in the image above) deliver better image quality, as the depth of field can be increased through the iris diaphragm. 

Conclusion: Thanks to the development of the LM digital adapters, it is now very easy to use DSLR cameras with slit lamps and surgical microscopes (OPMI). DSLR and system cameras feature a very good price-performance ratio and are easy to operate. The possibility of transmitting high-resolution videos (HDMI) via live feed through the output port to a large HD monitor for discussion during presentations is particularly interesting. If interested, we will be pleased to assist you in selecting the optimum adapter and camera. To help you choose the camera that is best suited for your needs, we have put together a guide and a list of camera rankings with up-to-date test reports on our website. 

13.03.2014

Zeiss OPMI mit LM digital SLR Universal Adapter und Kamera


New LM Digital Adapter for: Sony Alpha 9 II (ILCE-9M2) / Sony Alpha 9 / Nikon D6 / Sony Alpha 7R IV / Sony Alpha 7S II / Sony Alpha 7R III / Nikon Z6 with F-Mount Adapter FTZ / Sony Alpha 7R II / Nikon Z7 with F-Mount Adapter FTZ / Canon EOS R with Canon Adapter EF-EOS R / Canon EOS Ra (Astro) with Canon Adapter EF-EOS R / Canon EOS RP with Canon Adapter EF-EOS R / Sony Alpha 7S / Canon EOS 1D X Mark III / Nikon Z50 with F-Mount Adapter FTZ / Nikon D850 / Canon EOS 1D X Mark II / Nikon D780 / Sony Alpha 7III / Nikon D5 / Sony Alpha 6600 / Sony Alpha 6400 / Sony Alpha 6100 / Canon EOS 1D X / Nikon D4s / Olympus OM-D E-M5 III / Canon EOS 90D / Canon EOS 5D Mark IV / Nikon D4 / Nikon D750 / Canon EOS 6D Mark II / Sony Alpha 6300 / Sony Alpha 6500 / Nikon D500 / Nikon D810 / Nikon D800 / Nikon D800E / Nikon Df / Panasonic Lumix DC-G9 / Nikon D610 / Nikon D600 /