If your passion lies in photographing weddings and corporate events, an ultra-wide fisheye lens won’t be very useful to you.

Broadband dielectric mirrors, composed of multiple thin layers of different transparent optical materials carefully engineered for specific optical properties, provide high reflectance over a broad wavelength range.

For example, one popular wavelength range is 320-450 nm. More wide ranges, such as 400-750 nm or 750-1100 nm, are also feasible. Ti: Sapphire lasers may necessitate optimization for the 650 to 1100 nanometer wavelength range. This can be accomplished using a set of broadband dielectric mirrors, often offered as a kit. Alternatively, good reflection can be attained with an ultra mirror designed for that specific wavelength range.

Short telephoto lenses are popular choices for photographers capturing live music, weddings, and portraits. Medium telephoto lenses cover a range of 135mm-300mm and are an important lens choice for sports and bird photographers.

VIETNAM:Alpha Industrial Park, Tu ThonVillage, Yen My District, HungYen Province 17721+84 221-730-8668sales-vn@avantierinc.com

Dichroicmirror

We recommend keeping it simple if you’re just getting started with photography. A standard 24-70mm zoom lens and a 50mm prime lens are a great place to begin your exploration with focal length.

Not sure what focal length your camera lens might be? Luckily, you don’t have to make any tricky optical measurements to figure it out.

Short focal length is an umbrella term to describe any lens that falls in the category of wide-angle or standard. A lens with a short focal length can include anything that falls between 4mm – 85mm.

This style of lens can regularly be spotted on the sidelines of sporting events or by photographers who specialize in photographing dangerous wildlife, where keeping your distance is crucial.

These are the lenses that almost every photographer has in their kit. Standard lenses cover a focal length range of 35mm-85mm and can be a prime or zoom lens.

The focal length is generally represented by millimeters on the lens. It also acts as a shorthand for describing a lens.

Zoom lenses offer a range of focal lengths within a single lens. A 24-70mm is a classic camera focal length for a zoom lens and a popular choice that comes bundled with a camera body.

In laser setups, a resonator mirror is typically chosen to be dielectric, either broadband or laser line. These mirrors are favored due to their high reflectivity and their ability to transmit undesirable pump light out of the system through their less reflective wavelength bandwidths.

Popular focal lengths for prime lenses include 35mm, 50mm, 85mm, but they are available with super-wide fisheye perspectives and super telephoto lengths, too.

A wide-angle lens is a good choice for shooting sweeping landscapes, large group portraits, or for off-kilter street photography.

Super telephoto lenses are anything with a 300mm focus length and above. Lenses on cameras with such long focal lengths are typically only used by the pros.

Lenses with longer focal lengths tend to be much more expensive, so before you buy consider your needs. There is absolutely no reason to break the bank on a super-telephoto lens if you’re primarily interested in portrait or still life photography.

Prime lenses only offer a single focal length, meaning you will need to physically move your body if you want a different perspective.

A dielectric mirror can provide higher reflection over a desired wavelength than even the best quality metallic mirrors—sometimes even exceeding 99%. This near-total reflection minimizes energy loss in optical systems, thus enhancing system performance and reducing the risk of thermal damage.

Thorlabs aluminummirror

Long focal lengths include all telephoto lenses—anything that captures a field of view that’s tighter than what the eye can see.

Thorlabs 反射 镜

It is also often used in music videos for a distorted, fun, and quirky take on a scene, sometimes creating subtle optical illusions.

The camera focal length determines what is going to be in frame, but it also determines just how close you will be getting to your subjects when you’re taking the picture.

The former refers to how much of the scene will be captured. The latter lets you know how large the individual elements will appear in the frame.

Thorlabs parabolicmirror

This online simulator is a great visual tool for focal length comparison. Play around to see how lenses with different focal lengths will capture the same scene.

Canon’s mirrorless 35mm lens is officially called the RF35mm F1.8 Macro IS STM lens. Here’s what all of those letters and numbers mean.

If that same performer is doing an intimate night at a club, a prime lens with a fast aperture and a wider field of view might be a more appropriate option.

Telephoto lenses are anything with a focal length of about 85mm. Short telephoto lenses are a popular focal length for all styles of photographers because of their versatility.

Wide-angle lenses are lenses that cover up to a 35mm field of view. This field of view is wider than the human eye and will increase your scope.

The focal length of a lens is determined by the optical distance between the focal plane and the center of the element when the lens is focused at infinity.

The secret to how dielectric mirrors work lies in their composition: dielectric coatings applied to a substrate, such as fused silica. Light reflects at each dielectric interface, and the resulting constructive interference leads to a total reflection exceeding 99 percent. Consequently, the mirror is optimized for use with a specific wavelength of light, making it less versatile than mirrors with broader reflectivity. In contrast, laser line mirrors offer high reflectivity only for a very narrow wavelength range.

Broadband Dielectricmirrors

Considering what you are shooting and where you will be working is an important first step. If you’re covering a massive concert at an outdoor venue, a telephoto zoom lens will help you grab detailed shots of the performers, but also shots of the general atmosphere.

Short focal length lenses will give you a wider field of view, but offer less magnification of the subject. Long focal length lenses give you a narrower field of view, but magnify whatever is in the frame.

At Avantier, we manufacture  custom broadband dielectric mirrors for a diverse clientele. These mirrors deliver ultra- high reflectivity over desired spectral ranges. We are capable of producing mirrors with high surface flatness, low damage thresholds, and a  low coefficient of thermal expansion. These mirrors are meticulously designed to meet the  unique requirements of our clients, and we take pride in our history of delivering high-quality optics for even the most challenging applications.

The technology inside of a zoom lens is more complicated, and the price of a standard zoom reflects that. Generally speaking, they also have maximum apertures that don’t open quite as wide as a prime lens.

Telephoto lenses get more expensive and much heavier as the focal lengths increase to account for all the elements on the inside of the lens. Wide-angle and telephoto lenses are available as both prime or zoom lenses.

However, an environmental portrait photographer capturing an artist in their studio might want a wider field of view to help bring additional elements into the frame.

D-shapedmirror

A telephoto lens refers to anything with a focal length of 85mm and above. These lenses produce a tighter field of view and mean that you can photograph subjects without getting super close.

It is also a fantastic choice when photographing architecture and real estate. You’re getting the biggest bang for your buck but capturing as much of a space as possible.

Certain photography styles call for a unique specialty lens. Here’s some of the unique properties of these lenses and reasons why a photographer might choose to use them.

Optical components

Camera lenses are divided into categories that are defined by focal lengths. These are the basic types of camera lenses and focal lengths they generally cover:

The fisheye lens offers a super-wide field of view that’s almost circular. A true fisheye lens has a field of view between 4-16mm.

In-stock optics are a suboptimal  choice when you require broadband dielectric mirrors due to the intrinsic customizability of these optics. Let us know how we can work with you to help you achieve your ideal optical system. Call us today to place your custom order or schedule an introductory consultation with one of our experienced optical designers.

Choosing the right lens for your photography ultimately comes down to personal preference, but it can be useful to consider what you are shooting. It’s also important to consider how much you are willing to spend.

UltraBroadband Dielectric Mirror

These are a more specialized tool used by pros photographing major sporting events or out in nature capturing dangerous wildlife.

Choosing which lens and what focal lengths you are going to use when taking pictures is one of the most important decisions you can make as a photographer.

Zoom lenses can be more convenient and versatile than a prime lens because you can cover a wider field of view without having to change the lens.

If you are shooting on an analog camera, the focal plane is the piece of film. If you are using a digital camera, that focal plane is the camera’s digital sensor.

Prime lenses tend to offer wider maximum apertures, which is why photographers refer to them as being fast. The technology inside of a prime lens is quite simple compared to a zoom lens, which makes them more affordable.

Choosing a focal length is one of the most important decisions you can make as a photographer. There’s a reason that professional photographers have a collection of lenses at their disposal to make sure the focal length matches the moment.

Broadband dielectric mirrors are the preferred optic for numerous beam steering and beam folding applications across the UV, visible, and NIR spectrums. They find use in fluorescence microscopy, flow cytometry, and laser systems.

Lenses with shorter focal lengths will have a wider field of view. Lenses with longer focal lengths will have a narrower field of view, but increased magnification.

Long focal length lenses are popular choices for weddings, wildlife, or sports photography. Short focal length lenses are good for architecture, landscapes, street photography, or photojournalism.

On the barrel of this particular lens you will find the numbers 0.17m/0.56ft – ∞. These markings refer to the distance that the lens will be able to focus in AF mode.