The 453TBL-15-LED 2x/4x Stereo Microscope from National Optical is a dual magnification stereoscopic microscope designed for laboratories, high school and university students. The stereo (two) eyepiece configuration is preferred by most researchers and students because of the superior depth of field and comfort compared to monocular microscopes. This model of the 453 stereo microscope has a paired 15x eyepiece delivering 30x and 60x magnification. Two achromatic paired objectives are parcentered and parfocalled to keep the specimen centered and focused when switching between the two magnification settings.

The 453TBL-15-LED microscope can illuminate specimens from above and/or below using cordless LED lights activated by separate base-mounted On/Off switches. LED lighting is suitable for microscopy because of its cool operating temperature, relatively white color temperature, and energy efficiency. The cordless LED lights will provide up to 50 hours of illumination after a full eight-hour charge. The rack and pinion system has a single focus dial and includes a slip clutch mechanism to prevent mishandling. An adjustable interpupillary distance, left-side diopter correction, and reticle holder/retainer make the 453 stereo microscope a welcome addition to classrooms as well as labs.

Top/Bottom Cordless LED Lighting    45° Inclined Viewing Head    15x Stereo Eyepiece    2x/4x Objectives, 30x/60x Magnification    Parfocalled/Parcentered Paired Objective    80mm Frosted Glass Stage    Rack and Pinion Focusing

• Paired 15x (20mm) inclined eyepiece
• 2x and 4x achromatic objectives
• 30x and 60x magnification
• Parfocalled, parcentered, paired objectives
• 75mm / 3" working distance, 35mm / 1.4" maximum specimen height
• Eyepiece with diopter adjustment and reticle holder/retainer
• 55-75mm / 2.2-3" interpupillary distance

• Rack and pinion focus system
• Slip clutch prevents over-turning
• Tension adjustment prevents focus drift

• Incidental (top) cordless LED illumination
• Transmitted (bottom) cordless LED illumination
• Up to 50 hours of continuous operation on a full charge
• Dual base-mounted On/Off switches

• 80mm frosted glass and 80mm reversible black and white stage plates
• Locked on metal stage clips
• Cast metal frame
• Grey enamel finish
• 12.2" (31 cm) height
• 5.5 lb (2.5 kg) weight

Related Questions and Answers

Q: 1. Will this work with the Z mount Nikon NIKKOR Z 24-200mm f/4-6.3 VR Lens?

A: As of right now, the only lens it is compatible with is the Z 70-200mm f/2.8 VR S.

Q: 2. Can this fresnel attachment project a circle of light with tack sharp edges?

A: Fresnels have soft falloff on the edges. In order to get a crisp edge you would need a Leko or a ellipsoidal.

Q: 3. Will this work with a Nikon NIKKOR Z 24-200mm f/4-6.3 VR Lens?

A: No, the Nikon Z Teleconverter TC-2x is not compatible for use with the Nikon NIKKOR Z 24-200mm f/4-6.3 VR Lens. As of the date/time of this reply, Nikon lists the Nikon Z Teleconverter TC-2x as only being compatible for use with the Nikon NIKKOR Z 70-200mm f/2.8 VR S Lens, B&H # NIZ7020028, the Nikon NIKKOR Z 100-400mm f/4.5-5.6 VR S Lens, B&H # NIZ10040045, and the Nikon NIKKOR Z 400mm f/2.8 TC VR S Lens B&H # NIZ40028.

Q: 4. Will it fit on Impact 300 VSD? S-type

A: The unit is designed for LED. It is not compatible with flash.

Q: 5. Does the extender change the minimum focusing distance of the 70-200mm f2.8 S?

A: No it does not. According to Nikon, the TC-2.0X teleconverter will retain 100% resolution, AF and VR functionality, minimum focusing distances and weather-sealing of the lens used with the teleconverter.

Q: 6. Will the teleconverter work with the new Tamron Z 70-300 lense?

A: No, this Nikon Z Teleconverter TC-2x is only compatible with select Nikon Z lenses.

Q: 7. I have several AF-S lenses: Nikon, Sigma and Tamron that I use now with my 810. Can I get converters for the Z 5?

A: absolutely, the Nikon FTZ adapter will adapt your F mount lenses to the Z mount. Click the link below to view; https://www.bhphotovideo.com/c/search?Ntt=ftz&N=0&InitialSearch=yes&sts=ma

Q: 8. Will the flash tube in the AD600 (non pro) contact the rear lens?

A: These fresnels were not designed to be used with a flash.

Q: 9. Will this work with the Nanlite forza 60 with the Bowen's attachment. AND will this also work with the Apurture amaran 60d? Thank you!

A: This will work with Bowens mounted LED.

Q: 10. Will I be able to use this with the FTZ adapter? For example an Tamron 70-200 2.8 G2 with FTZ with TC-2x with Z6?

A: No