MAGUS Bio VD350 Biological Inverted Digital Microscope
With a camera. Magnification: 100–400x. Trinocular head, plan achromatic lenses, 30 W halogen illuminator, phase contrast condenser, Köhler illumination

The microscope is designed for studying liquid precipitates, cell colonies, living cells, tissue cultures, and other stained and unstained specimens in lab glassware. The inverted design of the microscope allows for the use of Petri dishes, multi-well plates, vials, roller bottles, and flasks up to 55mm with a bottom thickness of 1.2mm. The microscope uses special objectives for working with such glassware. The tilting stand of the illuminator enables you to observe cell cultures in tall Petri dishes or in cylindrical flasks up to 165mm. The transmitted light microscopy technique (brightfield and phase contrast) is used for studying samples. The trinocular tube/camera port enables the simultaneous connection of a monitor and camera. The microscope can be used for education, laboratory work, and research purposes. Areas of application: medicine, biotechnology, biology, virology, agriculture, ecology, toxicology, pharmacology, and others.
Key features
Microscope specifications
Camera specifications
References and downloads


Digital camera
The MAGUS CDF30 digital camera is designed for the brightfield and darkfield microscopy technique. It offers a low noise level and high light sensitivity.
The camera is equipped with an 8.3MP sensor and delivers realistic images in 4K resolution (3840x2160pix) with the clearly visible fine details of samples and their structures. It is recommended to use the camera with 4x, 10x, and 20x objectives as well as with a stereomicroscope.
At maximum resolution, video is captured at 45fps. This is enough for classroom demonstrations, focus adjustment, recording fast-moving processes, and observing moving samples. At Full HD resolution (1920x1080pix), the rate increases to 70fps, and so the transitions between frames become softer and the camera can catch the slightest movement of the sample.
The camera is equipped with a USB 3.0 interface. The data transfer speed is 10 times faster than USB 2.0 cameras. The high-speed camera is recommended for professional laboratories, research, or university training.

Microscope head
Tube length – infinity (∞). When assembling the microscope, the user can rotate the eyepiece tubes 180° and adjust the eye relief to fit their height. There is a trinocular microscope head. The monitor is mounted in the vertical tube of the trinocular head and the digital camera – into the camera side port. The trinocular head has a 50:50 or 100:0 beam splitter, and 100:0/0:100 on the body.

Revolving nosepiece
The 5-objective revolving nosepiece is mounted on a stand under the stage. You can install an additional phase objective in a free slot of the revolving nosepiece to achieve extra magnification for the phase-contrast method.

Infinity plan achromatic objectives with a long working distance for dishes with a bottom thickness of 1.2mm. There are 3 objectives for the brightfield technique and one objective for the phase contrast technique.

Focusing mechanism
Coaxial coarse and fine focusing knobs are located at the base of the microscope on both sides. The user can place their hands on the table and take a relaxed pose while observing. The focusing adjustment is smooth and effortless. On the right, there is a coarse focusing lock knob for quick adjustments after changing the sample. On the left, there is a coarse tension adjustment ring for further adjustment.

There is a fixed stage with a mechanical attachment for moving the laboratory ware in two mutually perpendicular directions. The smooth and subtle movement of the object augments the accuracy of the study: No part of the specimen will be overlooked. The travel knob is located at the bottom, and so the user won’t strain the right wrist. The microscope set includes four dish holders for dishes of different sizes.

Phase-contrast condenser with four positions. A free slot is used for brightfield microscopy. The other three slots with phase annuli plates are used for observing by way of objectives at magnifications of 10x, 20x, and 40x. The phase contrast rings can be centered. Fast and intuitive switching between the microscopy techniques saves time and simplifies the researcher’s work.

Light source
Halogen bulbs emit light with a color temperature that allows for comfortable work. The 30W bulb is bright enough to observe with all objectives that are used for brightfield and phase contrast microscopy techniques.

Köhler illumination
Setting up the Köhler illumination enhances the image quality of a specimen. With such illumination, you will achieve maximum resolution on each objective and even the illumination of the field of view with no darkening at the edges. The object of study is in sharp focus and the image artifacts are removed.

There is a line of accessories designed specifically for this microscope. There are additional 20x and 40x phase objectives for studying 0.7µm and 0.4µm non-contrast objects. The eyepieces will extend the magnification range of the microscope. Additional eyepieces will help you use the full potential of an objective that is used more often. A digital camera that outputs the microscope image to a monitor, stores files, and software that takes real-time measurements of specimens. A calibration slide for measuring objects that can be combined with an eyepiece with a scale or the camera software.

Key features

Key features of the microscope:
  • Studies of stained and unstained objects in lab glassware (Petri dishes, flasks, plates)
  • Microscopy techniques: brightfield and phase contrast; Köhler illumination
  • Tiltable stand for glassware up to 165mm
  • Trinocular head with the option to adjust eye relief
  • Two options for mounting a digital camera and monitor: vertical tube of the trinocular head and camera side port on the body; beam splitting on the trinocular head – 50:50, beam splitting on the body – 100:0/0:100
  • Powerful 30W halogen transmitted light illuminator that provides bright natural light
  • Phase contrast turret condenser for quick and convenient switching between the microscopy techniques
  • The stage is equipped with a mechanical attachment for moving glassware along the X and Y axes, dish holders included in the set
  • Additional accessories

Key features of the camera:
  • 4K camera for brightfield and darkfield microscopy observations with 4x, 10x, and 20x objectives as well as stereomicroscope: The higher the resolution is, the finer the details will be that you can see.
  • 45fps at 4K resolution, 70fps at Full HD resolution: easy focus adjustment, classroom demonstrations, observation of moving samples, and video recording - the movement of the sample can be seen without jerkiness and lags.
  • SONY Exmor backlit color CMOS sensor provides a low noise level and high light sensitivity even in low-light conditions. You will get clearer, brighter, and more color-saturated images.
  • USB 3.0 interface for fast, smooth data transfer
  • Software with photo, video recording, editing, external display, and linear and angular measurements


  • MAGUS CDF30 Digital Сamera (digital camera, USB cable, installation CD with drivers and software, user manual and warranty card)
  • Stand with the built-in power supply, transmitted light source, focusing mechanism, stage, condenser mount, revolving nosepiece, and trinocular tube
  • Phase-contrast condenser
  • Trinocular head
  • Infinity plan achromatic objective: PHP2 10x/0.25 phase WD 4.27mm
  • Infinity plan achromatic objective: PL 10x/0.25 WD 4.27mm
  • Infinity plan achromatic objective: PL 20x/0.40 WD 8.0mm
  • Infinity plan achromatic objective: PL 40x/0.60 WD 3.5mm
  • Eyepiece 10x/22mm with long eye relief (2 pcs.)
  • Eyecup (2 pcs.)
  • Centering telescope
  • Round stage plate
  • Mechanical attachment for moving the specimen
  • Dish holder (4 pcs.)
  • C-mount camera adapter
  • Color filter
  • AC power cord
  • Dust cover
  • User manual and warranty card

Available on request:

Microscope specifications

Microscope design: inverted

Image field: flat

Transmitted light microscopy techniques: brightfield, phase contrast

Microscope magnification, x: 100–400 basic configuration (*optional: 40–500/600/800/1000)

Tube length: infinity (∞)

Microscope head type: trinocular

Microscope head: Siedentopf, rotatable 180°

Inclination: 45°

Microscope head magnification, x: 1

Interpupillary distance, mm: 48–75

Eyepiece diameter, mm: 30

Eyepieces, x/field, mm: 10х/22mm, eye relief: 10mm (*optional: 10x/22mm with scale, 12.5x/14; 15x/15; 20x/12; 25x/9)

Revolving nosepiece: 5 objectives

Optical design: infinity plan achromatic objectives (∞), parfocal distance: 45mm

Objectives, x/aperture/working distance, mm: PL 10x/0.25/4.27; PL 20х/0.40/8.0; PL 40x/0.60/3.5; PHP2 10х/0.25/4.27 phase; (*optional: PL 4x/0.10/21.0; PHP2 20х/0.40/8.0 phase; PHP2 40x/0.60/3.5 phase)

Spring-loaded retractable assembly: 40х

Stage: 227x208mm, fixed, with glass plate Ø118mm and mechanical attachment; dish holders: 86x129.5, Ø90mm; 34x77.5mm, Ø68.5mm; 57x82mm, Ø60mm; 29x77.5mm, Ø35mm

Moving range, mm: 77/114

Condenser: NA 0.6, working distance: 55mm; phase contrast turret

Diaphragm: adjustable iris diaphragm

Focusing mechanism: coaxial coarse and fine focusing knobs located on both sides

Fine focusing scale value, μm: 2

Coarse focusing tension adjusting knob: +

Coarse focusing lock knob: +

Illumination: transmitted

Transmitted light source: halogen lamp: 12V/30W

Phase contrast device: phase contrast condenser (turret) with a free slot and phase annuli plates for 10x, 20x and 40x objectives; centering auxiliary microscope

Power supply, V/Hz: 220±22V/50Hz via an AC power supply

Operating temperature range, °C (°F): 5… 35 (41… 95)

Operating humidity range, %: 20… 80

Camera specifications

Sensor: SONY Exmor CMOS

Color/monochrome: color

Megapixels: 8.3

Maximum resolution, pix: 3840x2160

Sensor size: 1/1.2'' (11.14x6.26mm)

Pixel size, μm: 2.9x2.9

Light sensitivity: 5970mV/lux/s

Signal/noise ratio: 0.13mV at 1/30s

Exposure: 0.02ms–15s

Video recording: +

Frame rate, fps at resolution: 45@3840x2160; 70@1920x1080

Place of installation: trinocular tube, eyepiece tube instead of eyepiece

Image format: *.jpg, *.bmp, *.png, *.tif

Video format: *.wmv, *.avi, *.h264 (Win 8 or newer), *h265 (Win 10 or newer)

Spectral range, nm: 380–650 (with IR filter)

Shutter type: ERS (electronic rolling shutter)

White balance: auto/manual

Exposure control: auto/manual

Software features: image size, brightness, exposure time

Output: USB 3.0, 5Gb/s

System requirements: Windows 8/10/11 (32 and 64 bit), Mac OS X, Linux, up to 2.8GHz Intel Core 2 or higher, minimum 2GB RAM, USB3.0 port, CD-ROM, 17" or larger display

Software: MAGUS View

Mount type: C-mount

Body: solid aluminum

Power supply: DC current, 5V, with the USB port of the PC

Operating temperature range, °C: −10... 50

Operating humidity range, %: 30… 80