Focal Length of a Lens - lens focal point
The 1.33x Anamorphic Lens is our most cinematic mobile anamorphic yet. With a 20% wider aperture compared with our M-Series family you can unleash the full resolution of the latest generation camera s...
laboratory photometerLX400FP ... Flame Photometer is a high quality and high performance instrument with digital output display, used for determination of ...
telephoto lens中文
USB 3.0 Cables · TetherPro USB 3.0 to Micro-B, 15 feet (4.6m), High Quick View · TetherPro USB 3.0 to Micro-B, 15 feet (4.6m), High-Visibility Orange · The ...
Telephotolens
Get ultra close. Made for nature photographers, food porn lovers, and creatives who obsess over the details. Marvel at the details of a ladybug in your garden or inspect the intricacies of a handmade piece of jewelry. Available in 75mm or 10x.
Diode lasers emit with very large differences in X and Y divergence. Multimode diode lasers will also have a beam that is not at all Gaussian in ...
For full control over your Moment Lenses, on iOS we offer the Pro Camera App. It gives you all the manual controls your big camera has, and lets you hard select which Moment lens is being used for the best results.
Sigma telephotolensSony
Both M & T-Series lenses work with our 67mm filter adapter (sold separately), so you don’t need to buy an expensive set of new filters.
We’ve increased compatibility to all of the latest iPhone and Android camera phones, making these lenses more future proof.
It’s a hard choice to make. Tele, wide, fisheye, anamorphic or macro lenses. Do I need just one or bundle them all up for the ultimate kit!? Read our full lens guide for more info if you need help deciding on which lens is right for you.
Get 2X (or 4x with the Moment Pro Camera app) closer to your subject. Incredible for portraits, landscapes, and smooth video, the Tele 58mm is the best telephoto lens we’ve ever made. Made with 25% mo...
Go wider. Capture the entire sunset from the top of your hike, not just part of it — or document kids and pets without having to back up and miss the moment in the process.
Get Cinematic. The Anamorphic offers delicious lens flares in Blue or Gold flares, an unbeatable cinematic touch with a true Anamorphic aspect ratio, and two unique squeezes (1.33x & 1.55x).
Go extra wide. With 200 degrees field of view, this was made for creatives who want to pack a lot into the frame—filmmakers, documentary-style photographers, athletes, architects, or vloggers.
Moment lenses are available in two generations, our T-Series & M-Series, optimized for different phone camera focal lengths. T-series is our latest range that supports newer, larger camera phone sensors from 2023 onwards. M-Series is our previous generation of lens. It has the same incredible glass quality but in a smaller package; perfect for shooters who are just getting started (like younger family members), those who want a budget option, or a way to turn an old phone into a killer camera.
Get incredibly close to your subject with the Macro 75mm. Different from traditional macro photography, this lens works less than four inches away from the subject to capture rich textures, materials,...
Limitations of the tools used to make my KC are (1) depth control of the router (probably not accurate to more than 2 decimal places) and (2) that glue + clamps + eyesight are not the best alignment tools. I can improve upon this alignment issue in the future by drawing lines that needed to be matched up on the outside of the KC, rather than trying to estimate what the inside of the part looked like after clamps obscured my view.
To attach our lenses to your phone, you'll need one of our cases. Check the compatibility chart below to see if your phone is compatible, and then shop for your case.
The KC design spreadsheet had predicted that my KC would have an x-, y- and z-displacement error of 8.27e-3 microns, 4.03e-4 microns, and 3.18e-2 microns, respectively. Since the KC has such a light load (50g), there was such little elastic deformation between two parts that no contact ellipses could be computed and the contact locations could essentially be considered to be points.
If we don’t have a case for your phone, we offer our Universal Mount. It provides a multi-directional mounting solution to move your lens up, down, right or left…enabling you to align it directly over your phone’s camera lens.
Nikon telephotolens
sigma telephotolens150-600
The theory of kinematic constraint states that an object should be constrained by as many contact points as there are possible degrees of freedom to ensure that it has no degree of freedom. Kinematic couplings are useful in machine design because they are a cheap, precise, and robust manner of ensuring that two parts sit at the same relative position every time they meet.
The 14mm Fisheye Lens is the widest super wide lens we’ve ever made. It features a massive 200 degree field of view, producing a 30% wider image than the 120 degrees you will find on ultra wide phones...
sigma telephotolens70-300mm
Get closer. This telephoto lens is a fantastic portrait lens. Sharp in the center with a natural drop-off on the edges, you can capture more intimate shots of people, nature, and still-life scenes.
Canon telephotolens
Simply line it up, twist, and you’re ready to shoot. It pairs nicely with our Moment case or universal mounting system for a seamless user experience.
I've tested one camera and lens per day. I've been comparing my old Nikon D800 with the newer Nikon Z9 and the newest Nikon Z8. The telephoto ...
Fluke Laser Shaft Alignment Tool. RK-20051-34. $17,218.02CAD / Each. 2005134. 0.0. No Reviews. Ships by December 05. Add To Cart. + ...
Router: The KC was manufactured using the MIT Hobby Shop’s router. Although the V-groove part of the KC was drawn as one solid part in Solidworks, it was necessary to fabricate it as two pieces with half thickness (i.e. the thickness of the wood) and then glue the V-groove ends to the curvy triangular piece. The thickness of wood was 0.6” instead of 0.5” like I had designed, but this fact did not require modifying the design, merely changing the MasterCAM file cut depth. In Solidworks I had cut-off a fragment of the spheres but in practice, I drilled cylindrical holes into the part and sunk the spheres into these holes. I learned that the router’s V-groove tool finishes off a line with a rounded end that I did not take into account in my CAD model. I was lucky that the rounded line just barely skimmed the edge of my part and remained invisible (as I hoped) when viewed in an assembled position. Assembly and Corrections: During design, I had incorrectly cut a ¼”-depth V-groove for a ¾” ball. Since the ball was too big for the groove, its two contact points were directly at the edge of the V-groove (rather than halfway along the groove’s planar surface) and, in high load applications, would cause points of high stress concentration. The stress concentrations, over time, would lead to failure in the part. This ball sizing error also affected the stability of my kinematic coupling which is why a slight V-groove misalignment became blatantly obvious with the ¾” balls. Folkers helped me fix this mistake: we flipped over the part, drilled new holes for D=½” balls and glued in these correctly sized spheres. Although not the original design intention, I think the new part looks artistic and evocative of an Oscar Niemeyer building (Niemeyer liked to show his buildings elevated off the ground).
Our lenses are always crafted with premium materials, ensuring the highest quality you won’t find anywhere else in the mobile market.
My experimental method of computing displacement error consisted of drawing a line joining the top and bottom part of the KC (considered the baseline). The two KC parts were assembled together five times and each time the displacement between the lines and the vertical distance between the parts was measured for each node. The average x- and y-displacement errors were 0±0 mm. The z-displacement error was 0.13±0.11mm. The experimental methodology was very prone to error given that it relied on my perception of when the calipers touched/slightly lifted up the two KC parts. With this methodology there was no way to measure the tiny variation in x- and y-position between the parts. Nevertheless, the experimental error measurements follow the same pattern as the theoretically predicted ones where the x- and y-errors are small and the z-error is almost two orders of magnitude larger. There is no necessity for a coaster holder to have better precision than even the max displacement error achieved experimentally, especially in the z-direction.
The 1.55x Anamorphic Lens is our most cinematic mobile anamorphic yet. With a 20% wider aperture compared with our M-Series family, you can unleash the full resolution of the latest generation camera ...
Our 3rd generation of mobile lenses. Discover how to get the most out of your photos and videos, gain answers to your key questions, and bro...
The 10x Macro T-series Lens captures life-sized images of the smallest objects. Different from traditional macro photography, this lens works less than an inch away from the subject to capture rich te...
thin protective membrane in some protozoa.
In prime focus photography, the focal length of the telescope simply becomes the equivalent focal length of a camera lens. For example, my 130mm aperture ...
The antireflection coating is a type of optical coating used to reduce reflection. The coating is mostly useful in multi-element lens combination where the ...
A Fresnel lens is a type of composite compact lens which reduces the amount of material required compared to a conventional lens by dividing the lens into a ...
Meet our 18mm Wide Lens, the perfect wide-angle lens for mobile photographers and filmmakers. Instead of the usual distorted ultra-wide shots from your phone, this gem offers a beautifully broad yet g...
Sigma telephotoLensfor Canon
Project Title: Coaster Holder: Kinematic Coupling Date: Fall 2012 Description: Part of an assignment to demonstrate the principle of kinematic constraint for MIT’s 2.75 Precision Machine Design course. Three-groove kinematic couplings ensure that two components rest in the same relative orientation each time they are brought together.
All our lenses use cinema grade glass tuned for incredible resolution and improved MTF scores to match the today’s smartphone sensors. M-Series is optimized for 26mm and above focal lengths and T-Series handles 24mm and above.
eco- In general, no hyphen when used as a prefix relating to ecology or the environment: ecosystem, ecotourism. See Words Formed With Prefixes under General ...
To attach our lenses to your phone, you'll also need a lens mount. If you have a iPhone 12 and newer, or a Pixel 7 Pro and newer, you'll need one of our drop-in mounts. For older phones, you'll need a Stick-on Mount or Universal Mount. Check the compatibility chart to see what type of mount you need for your phone.
I chose to build a James Clerk Maxwell three-groove coupling where three V-grooves on one part are oriented towards the center and mate with three curved surfaces on the other part. My KC functions is a coaster holder that serves as an interesting center piece to an otherwise plain wooden table in my apartment. The KC sizing was done in function of the typical coaster size D=4”. Wood was chosen due to ease of manufacturing. The preload was merely the 50g weight of the top part of the KC. A 90o V-groove was chosen such that 1/4th of the ball would be sunk into the groove.
The precision of the kinematic coupling was measured using calipers. It was not possible to utilize Abbe’s error because the geometry of the KC did not lend itself to x- and y-measurements. Due to its triangular shape, it would be difficult to stably attach the laser to the upper KC piece in such a manner that the laser would not interfere with the KC placement and balance, and such that the movement of the laser placement wouldn’t be a big source of error.