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LM Direct Imager SLR adapter: professional adapter solution for Zeiss microscopes with 52 mm external thread phototubes

Zeiss is one of the leading names for high-quality stereo and laboratory microscopes. With our new compact LM Direct Imager SLR adapter with built-in plan achromatic precision optics, large-sensor cameras – such as digital mirrorless system cameras, DSLR cameras, special-purpose microscope cameras, high-speed cameras, industrial cameras or C-mount cameras – can be attached to Zeiss microscopes in a few quick and easy steps.

Many Zeiss microscopes, such as the Axio Lab.A1, Axiolab 5, Axio Examiner.A1, Axio Imager, Axio Observer, Axio Scope, Axiovert, Stereo Discovery.V12, etc. have a phototube with an external diameter of 52 mm. 

Zeiss photo tube, photoport, camera port, outer diameter 52mm, external
Zeiss phototube with an external thread of 52 mm

We are offering a compact, professional adapter solution that is specifically tailored for this phototube and can be used with cameras that have large sensors, such as APS-C or full-frame cameras. The adapter’s built-in precision optical system ensures excellent image quality.

Microscope adapter, LM adapter solution compact, professional adapter solution for digital cameras for current Zeiss microscopes, laboratory microscopes, stereo microscopes

The adapter is attached directly to the phototube of the microscope. The dedicated bayonet adapter for the camera is included in the scope of delivery. The adapter assembly is attached directly to the camera body.

 Adapter modules LM SLR microscope adapter for Zeiss microscope, digital mirror reflex, reflection system cameras, microscope cameras

Advantages of the Direct Imager SLR adapter:

Larger sensor sizes in cameras, such as M4/3, APS-C or full-frame formats, create a wider field of view (FOV). Full-frame cameras capture the largest possible field of view (100%) without any vignetting. With APS-C sensor cameras, the field of view that can be obtained at maximum image quality is slightly smaller.

Comparison of FOV size: 

LM microscope attachment adapter FOV image field size with different sensors

The adapter solution also comes with a filter holder with a 37 mm internal thread as standard, which accommodates commercially available optical filters (polarising filters, grey filters, UV filters, IR filters, etc.). The filter can be attached just below the level of the camera bayonet adapter. This is an important feature for many special applications in life sciences.

LM adapter solution with integrated optical filter

Shown below: LM adapter solution with polarising filter and camera bayonet mount

 SLR LM microscope adapter with filter holder for polarization filter Gray filter IR filter adapter solution microscope

Demo photo using a polarising filter:

Demo recording of plastic components with polarization, Zeiss microscopes

Compatible Zeiss microscopes:


Axio Examiner.A1
Axio Examiner.D1
Axio Examiner.Z1
Axio Imager Vario
Axio Imager.A1
Axio Imager.A1m
Axio Imager.A2
Axio Imager.A2m
Axio Imager.D1
Axio Imager.D1 with "ApoTome"
Axio Imager.D1m
Axio Imager.D2
Axio Imager.D2m
Axio Imager.M1
Axio Imager.M1m
Axio Imager.M2
Axio Imager.M2m
Axio Imager.Z1 + ApoTome
Axio Imager.Z1m
Axio Imager.Z1
Axio Imager.Z2
Axio Imager.Z2m

Axio Lab.A1
Axio Lab.A1 FL-LED
Axio Lab.A1 MAT
Axio Lab.A1 Pol
Axio Observer.A1
Axio Observer.A1 Entry
Axio Observer.D1
Axio Observer.D1 + ApoTome
Axio Observer.D1 Entry
Axio Observer.D1 Mid Range
Axio Observer.D1 TIRF 3
Axio Observer.Z1
Axio Observer.Z1 Cell Observer
Axio Observer.Z1 Cell Observer SD
Axio Observer.Z1 High End
Axio Observer.Z1 TIRF 3
Axio Observer.Z1m ACR
Axio Scope
Axioskop 40
Axioskop 2 plus
Axioskop 2 mot puls
Axioskop 2 FS plus


Axio Scope.A1
Axio Scope.A1 Pol
Axio Scope.A1 Vario
Axioplan 2 Imaging
Axiovert 200
Axiovert 200 with "ApoTome"
Axiovert 200 M
PALM CombiSystem Rel. 4.2
PALM MicroBeam
PALM MicroBeam Rel.4.2
PALM MicroTweezers Rel.4.2
SteREO Discovery.V20
SteREO Discovery.V12
SteREO Discovery.V8
SteREO Lumar.V12
Stemi 508

The new mirrorless system cameras and DSLR cameras available on the market are very well suited for interfacing to a microscope and deliver high-quality images at an unbeatable price/performance ratio. The modular construction of our adapter solutions enables compatibility with almost all major camera brands – all you need to do is change the camera’s bayonet adapter.

As an alternative, the universal, flexible widefield adapter solution of our “Pro” line with C-mount connection would also be an option.



Fitting the microscope to digital single-lens reflex (DSLR), mirrorless interchangeable-lens cameras (MILC ), digital single-lens mirrorless (DSLM) or C-mount cameras is easy with our LM digital SLR adapters, which feature a plan achromatic optical system. Our products make it possible to capture top-quality microscope images. To help you select the adapter that is right for your camera, we have set up an online configurator on our website. You can also email us – ideally with attached photographs of your microscope.

Modern DSLR and single-lens mirrorless (DSLM) offer the latest technology and are generally very well suited for microscopy applications. Most of them can be controlled remotely via PC/Mac. Because of their high sales volumes, they offer an excellent price/performance ratio compared to special-purpose microscope cameras.

Features of top DSLR and single-lens mirrorless cameras (DSLM):
- Large, powerful full-frame sensors (36 x 24 mm)
- Sensor resolution of 61 megapixels or 240 megapixels with Pixel Shift technology
- High light sensitivity (ISO 400,000+)
- Extensive dynamic range (up to 15 aperture stops/f-stops)
- Short exposure times (1/8000 second) up to 1/32,000 seconds using the digital shutter
- 4K Ultra HD  or 8K Ultra HD video function
- Live video capture on external monitors in ultra HD quality

In most cases, these cameras are significantly more powerful than microscope cameras with smaller sensors (1/2" or 2/3"). On our website you will find our current camera recommendations and a camera ranking which is specifically tailored to microscopy applications.

New LM Digital Adapter for: Sony Alpha 9 III / Nikon Z9 / Nikon Z8 / Sony Alpha 7R V / Sony Alpha 1 / Sony Alpha 9 II (ILCE-9M2) / Sony FX3 Cinema Line / Sony Alpha 9 / Nikon D6 / Canon EOS R3 / Canon EOS R6 Mark II / Canon EOS R8 / Sony Alpha 7R IV / Canon EOS R5 / Sony Alpha 7S II / Sony Alpha 7S III / Sony Alpha 7R III / Canon EOS R6 / Nikon Z6 / Nikon Z6II / Sony Alpha 7R II / Nikon Z7 / Nikon Z7II / Canon EOS R / Canon EOS Ra (Astro) / Nikon Z5 / Sony Alpha 7C / Canon EOS RP / Sony Alpha 7S / Canon EOS R7 / Leica SL2-S / Canon EOS R10 / Canon EOS 1D X Mark III / Nikon Z50 / Nikon Z30 / Nikon Z fc / Nikon D850 / Canon EOS 1D X Mark II / Nikon D780 / Olympus OM-1 / Sony Alpha 7III / Olympus OM-D E-M1 Mark III / Canon EOS R100 / Sony Alpha 6700 / Nikon D5 / Sony Alpha 6600 / Fujifilm X-H2S / Fujifilm X-S10 / Fujifilm X-E4 / Fujifilm X-Pro3 / Olympus OM-D E-M1X /