Best Adjustable Focal Length

Cubyee Premium Borescope, [5.5mm 6 LED 1M/3.3FT Length] USB Micro Data Cable Endoscope, Waterproof Inspection Camera for Andorid Phone/PC

720p HD Camera – With a (0.8") fixed focal-length, this camera sensor includes a HD 720p camera, helping users to capture sharp images & record stunning videos, the set focal-length allows for safe & easy access to the eardrum..
Overheat Protection - Using revolutionary computer-chip technology, the probe safely manages the temperature of the device-body to protect the most sensitive portions of the inner-ear even after a extended use-time..
This newly upgraded, ultra-slim, (3.9mm) HD otoscope is the thinnest probe yet & is suitable for use on adults, children & pets, enabling easy & comfortable access to the ear canal. This kit includes the NTE390 Digital Otoscope, a Type-C Adapter, a set of Ear Specula (x3) & Earwax Removal Tools (x4)..
6 Adjustable LED Lights -The earwax removal tool(s) included with our NTE390 Digital Otoscope provide you a safe & convenient way to remove earwax by providing a clear image with more vibrant color reproduction..
Your satisfaction as our customer is supported by our 1-year warranty period & quality customer service.This is a USB otoscope and doest 't support current iPhone or iPad models..

SV135 7 mm to 21mm adjustable focal length.
SV135 7-21mm zoom eyepiece equivalent to multiple eyepieces.
obtain higher magnification with short focal length.
It could bring you a better observation experience in a comfortable situation with high-contrast imaging.
designed primarily for viewing landscapes and astronomical observations of lunar surfaces.
The true fully multi-coated Premium eyepiece with superior edge and center sharpness than normal PLOSSL eyepieces.
6-Element 4-Group premium optical design for superior optical performance.
Equipped with a precision-made standard 1.25-inch lens barrel that is compatible with any telescope that accepts 1.25-inch eyepieces.
Rubber eye guard for comfortable viewing and blocking stray light.
40 degree - 57 degree wide angle field of view.
high brightness observation is very comfortable.
you will obtain more details that you have never seen before.

Magnification: 25x-56x, Aperture: 80mm, Focal Length: 500mm.
Weight: 8-Pounds, Dimensions: 18.5-Inch x 4.5-Inch x 4.5-Inch (Tube Size).
Included Accessories: K20mm and K9mm eyepieces, 90 degree corner lens and an adjustable aluminum tripod.

...o Recording , SnapBridge via Wi-Fi or Bluetooth ,Auto, Aperture, Shutter & Manual Mode.
Shoot at staggering distances with the 125x optical zoom COOLPIX P1000 Digital Camera from Nikon. This camera, which has a 16MP backside illuminated CMOS sensor, features a built-in NIKKOR lens with a 35mm equivalent focal length range of 24-3000mm..
An absurd 24-3000mm (35mm equivalent) focal range means few, if any, objects are out of the reach of your lens. Zoom is further enhanced by Dynamic Fine digital zoom, which makes the maximum focal length a ridiculous 6000mm. Dual Detect Optical Vibration Reduction provides 5 stops of optical image stabilization so your handheld shots are crisp..
The P1000 features a slew of shooting modes that adjust settings for different scenarios like sunsets, fireworks, and portraits. The popular Moon Mode is great for shooting Earth's closest neighbor and the new Bird Mode optimizes the camera for capturing the often bright and colorful creatures..
A control ring at the front of the device can be used for a variety of functions, like adjusting focus, exposure, white balance, and ISO, all from the lens barrel. Also on the barrel is a zoom toggle and a dedicated Snapback button that will make your P1000 quickly zoom out in case ....

【Use Wireless Remote】Our telescope is equipped with a phone adapter. Just install your mobile phone on the phone adapter, connect to the the eyepieces of the telescope, and use the wireless remote (included) to take the photos, which is convenient and fast. You can take clear and bright pictures easily..
【Adjustable Tripod】The refractor telescope is available with an adjustable tripod, which can adjust the height from 16" to 49". The top of our tripod can horizontally move 360°and vertically move 90 °. The telescope can provide you with various viewing angles and meet the needs of different groups of people. The portable telescope and the tripod can be put in your bag, which is convenient for traveling and carrying..
【Reliable Service Team】You can get unlimited technical support from our customer service and online expert team. Regardless of any questions, please contact us..

Magnification: 40x-100x, Aperture: 60mm, Weight: 7.05-Pounds.
Focal Length: 800mm, Finder Scope: 5x24mm, Dimensions: 33.8-Inch x 46.3-Inch x 31.8-Inch.
Included Accessories: Adjustable Aluminum Tripod, H8 and H20 Eyepieces and 5x24mm Finder Scope.

Includes all original accessories plus a 90 day warranty.
Ultra-compact 3x zoom lens made exclusively for use with Nikon Digital SLR models.
55-200mm focal length, f4-5.6 maximum aperture.