The medium between the lens and the slide can be air or oil. Without getting too technical, the only way to get a Numerical Aperture greater than 1.0 is to use a material with a refractive index greater than 1.0. Oil (1.5) is such a material. So to get the best resolution at 1000x (N.A. 1.25), a drop of this special oil is placed between the lens and the slide. This is why all of our 100XR objective lenses are called oil immersion lenses. They work fine with just plain old air but will give a sharper image with oil (see image comparisons below). The oil can get messy and must be wiped up when you are finished. As a result, most people prefer to use their 100x objectives dry. If you try using immersion oil, clean up with lens tissue or a KimWipe on the lens. Avoid solvents.

Nikon telephotolens

Some of our entry level microscopes (104-109) do not have condenser lenses at all but still work quite well, even at 400x. See a comparison of images below. What you see are a model 109-L (without a condenser lens at 400x) and a model 138 (with an 0.65 condenser) at the same power. These images have been purposely reduced in resolution for the web but you should be able to compare and see greater resolution with the 138. You'll also note that the image is brighter and whiter. This is a result of the fluorescent vs. the tungsten illuminator.

While filming with this lens you will get excellent image quality and outstanding results on both the main and tele camera on your iPhone and Android smartphones*. Beastgrip Pro Series 1.7X Telephoto lens will give you an even more compressed perspective and more zoom when paired with the tele camera on your smartphone. Excellent quality videos in any situation are guaranteed!

Looking for a lens for your iPhone or Android smartphone that will produce unmatched quality results? The 1.7X Telephoto Lens is an excellent choice for those who record interviews in their studio or simply looking for a great lens to capture videos where good portrait shots are a must.

ATTENTION: Backorder item will be charged at checkout, and shipped as soon as available. Estimated shipping date Nov 14, 2023. Orders containing both in-stock and backorder items will be shipped once all backorder items are available. If you would like to have in-stock items shipped immediatly, plese place separate orders for in-stock and backorder items!

Sigma telephotolensSony

And thanks to its lightweight build and easy attachment to your smartphone via Beastgrip rigs, you can take it with you anywhere and look forward to optimal results.

Beastgrip 1.7X Telephoto Lens is built for performance! Advanced optical design and pro-grade glass with multilayer AR coating, enclosed in a machined aluminum body, ensures the best quality results on your smartphone.

sigma telephotolens150-600

You can be assured of crystal-clear results with low distortion and minimal lateral color. The machined aluminum body with an anodized finish is sturdy and stylish, providing maximum durability while still looking great.

Canon telephotolens

** 62mm filter mount is not directly compatible with Beastgrip 58mm Filters. We recommend using Beastgrip and other 77mm filters with included 62-77mm step-up ring

Ready to spice things up and give your shots even more flavor? Get that creativity floating and put an included 77mm filter mount to good use**. Attach your favorite filters and enhance your pictures with various effects. Use an ND filter for some motion blur. Add some hazy and dreamy look and soften your image using Black Mist filters. Get more control over the saturation and reflections by adding a CPL filter. Or simply add any other filter you like.

ATTENTION: Backorder item will be charged at checkout, and shipped as soon as available. Estimated shipping date Nov 14, 2023. Orders containing both in-stock and backorder items will be shipped once all backorder items are available. If you would like to have in-stock items shipped immediatly, plese place separate orders for in-stock and backorder items!

Telephotolens

* Excellent optical performance on Tele cameras (up to 3X optical zoom) on iPhone and Android phones. On cameras with 5X and 10X optical zoom, the 1.7X Telephoto lens may introduce optical aberrations and/or color fringing.

For every iPhone 15 owner who wants to take their phoneography to the next level, this lens is a must-have in your camera bag! It will produce excellent results and give unmatched quality when paired with iPhone 15 series state of art cameras and sensors. With the new 2X zoom option on the iPhone 15 Pro and iPhone 15 Pro Max main camera sensor, the 1.7X Telephoto lens will give you about 40-80mm focal lens equivalent, making it a perfect lens for portraits. While using it with a 5X tele camera on iPhone 15 Pro Max, you will get about 200mm focal length equivalent! Capture the finest quality photos and videos and unleash your new iPhone 15 cameras' full potential while using the new Beastgrip 1.7X Telephoto lens.

Take even more control over your visuals. Adjust the exposure, improve color saturation, add hazy glow or some motion blur. All this is possible by adding one of these filters to your rig.

Enhance your smartphone cameras and get unique perspectives. Create professional cinematic shots and take beautiful photos by utilizing one of the Beastgrip lenses. In any situation, any desired shot we have it all covered!

Start building your filming setup by picking the universal rig Beastgrip Pro, Beastclamp  or a dedicated Beastcage for iPhone. Have better grip, take better shots, create better content!

sigma telephotolens70-300mm

It’s perfect for landscape photographers looking to get a closer look at distant subjects, portrait photographers looking to get a flattering close-up shot of their subject, or anyone else looking to take high-quality photos and videos with their smartphone.

Featuring an advanced optical design, pro-grade glass elements with multi-layer anti-reflection coating, minimal distortion, and much more, this comprehensive lens will help you capture stunning photos and videos every time.

The next-generation Beastgrip 1.7X Telephoto Lens will give you unmatched quality results with any smartphone. It works especially great with the newly released iPhone 15 Series and its state of art cameras. Want to make content utilizing both the main and telecamera? No problem! The new 1.7X is the only Telephoto lens on the market that will produce exceptional quality results on both the main (wide) and tele camera on your smartphone*.

The Pro Series 1.7X Telephoto Lens is designed to increase the magnification of your photos and videos. This lens features an optical design with two groups and four elements for maximum image clarity. Its multi-layer anti-reflection coating allows capturing beautiful images with accurate color and sharp details.

New Beastgrip 1.7X Telephoto lens was designed to create magic in this specific department and capture amazing quality portrait shots. This lens gives about a 40mm focal lens equivalent which translates into a natural perspective and makes all your portrait shots look great. Beautiful compression and flattering portraits without distortion make this lens a perfect choice for those ready to elevate their photo art to the next level.

Beastgrip is dedicated to providing high-quality lenses and accessories for smartphone photography and filmmaking, and the Pro Series 1.7X Telephoto Lens is no exception.

Sigma telephotoLensfor Canon

Combine this lens with the main camera on your smartphone and get a more shallow depth of field when shooting close-ups. This lens will allow you to separate the object or subject you are filming from a background and help you to draw attention to a specific area of your image. With about 11 inches of minimum focus distance, 1.7X Telephoto lens allows you to shoot as close as possible to your object, making it a perfect choice for those who want to take excellent quality close-ups.

Now, back to our discussion on Numerical Aperture. What does this all mean for you? Well, the condenser lens system should have an N.A. greater than or equal to the largest N.A. of the objectives. For a microscope with 400x max power, you need a condenser lens with an N.A. of 0.65 for best possible resolution. An in-stage condenser lens (0.65) works perfectly for these magnifications. At 1000x, you now have an objective rated at 1.25 N.A., so your condenser system should match or exceed that value. You will now want to switch to an Abbe condenser system that can match those values. Without oil, you will never exceed N.A. of 1.0 regardless of what the numbers are on the lenses. So to get the best possible resolution at 1000x, you must use oil.

* Excellent optical performance on main Wide and Tele cameras (up to 3X optical zoom) on iPhone and Android phones. On devices with 5X and 10X optical zoom cameras, the 1.7X Telephoto lens may introduce optical aberrations and/or color fringing.

Numerical Aperture (N.A.): This is a number that expresses the ability of a lens to resolve fine detail in an object being observed. It is derived by a mathematical formula (n sine u) and is related to the angular aperture of the lens and the index of refraction of the medium found between the lens and the specimen. The physical size of the lens is important in determining the N.A. of the lens and to get the most from the lens, a light condensing system should be employed which will completely fill the back lens of the objective with light. To do this, the N.A. of the condensing system must equal or exceed the N.A. of the lens.

The Pro Series 1.7X Telephoto Lens is ideal for anyone looking to capture breathtaking images and videos with their smartphone camera. Whether you’re an amateur photographer or a professional videographer, this lens will help take your photos and videos to the next level.

Immersion Oil: This is a special oil used in microscope work. There are two basic types of immersion oil, Type A and Type B. The only difference between the two is the viscosity. Either will work well. One or two drops of oil are placed on top of the coverslip and the 100X objective lens is brought into position so that it touches the oil and creates a "bridge" of oil between the top of the slide and objective lens. The oil has a refractive index very close to that of glass. This allows very little refraction of the light rays as they go through the slide, specimen, coverslip, oil and through the glass objective lens of your microscope.

telephoto lens中文

The yellow band tells us that it is a 10x objective lens. Red is 4x Blue is 40x White is 100x. The first number "10" is the power (10x). The 0.25 is the Numerical Aperture. The 160 is a standard DIN measurement in millimeters of the tube length of the microscope required for this lens to work properly. Finally, the 0.17 is the thickness in mm of the cover slip that you should use. 0.17mm cover slips correspond to a number 1 cover slip.

So if you’re looking for a quality lens to take your smartphone photography and videography game beyond the ordinary, the Pro Series 1.7X Telephoto Lens from Beastgrip is a great investment.

The 1.7X Telephoto lens was designed to bring new standards and push the threshold even higher. High-quality materials and premium-grade glass make this lens the best photography and filmmaking lens on the market for your smartphone. It has a 62mm filter mount and comes with additional 77mm filter mount that allows you to use your favorite filters and add even more creativity to your shots.

Make your shots more stable, improve the lighting and sound in your footage. Pick any accessory you need to make sure that next filming experience is all you ever dreamed for.

Take amazing quality portraits plus all types of close-up shots and achieve a natural perspective with a nice separation between your subject and background. Unleash the full power of your smartphone and capture breathtaking pictures of nature, cityscapes, and landscapes. This lens will also be a perfect match for those who need to take quality product shots with their smartphone.

This lens has M37 x 0.75 threaded mount and M62 x 0.75 threaded filter mount and comes with addtional 77mm filter mount to use with new Beastgrip Pro Series 77mm filters. It is compatible with our universal Beastgrip Pro Rig and dedicated Beastcages for iPhone for easy attachment to your smartphone.

At just 6.2 ounces (176 grams) and 64 x 64 x 30 mm in size, it’s compact enough to fit into any camera bag or pocket. So whether you’re taking landscapes, portraits, or close-ups, the Pro Series 1.7X Telephoto Lens will help you get the perfect shot.

Beastgrip 1.7X Telephoto lens is the only lens on the market that works on both the main and the telecamera on your smartphone and produces great quality results. Combine this lens with a telecamera to get even more zoom and compressed perspective! Zoom in closer and get the same great shots with excellent details as if you are using a main camera.*