Most people know that mm stands for millimeters, but when it comes to camera lenses, the meaning is a bit different. mm is a unit of measurement used to describe the focal length of a lens. The focal length is the distance between the lens and the image sensor, and it determines how much of the scene will be captured in the image. A shorter focal length will result in a wider field of view, while a longer focal length will result in a narrower field of view.
What is the meaning of mm in camera lens?
Canon EF-S 24mm f/2.8 STM Lens
- Wide angle lens for Canon APS C cameras (equivalent to 38 millimeter on a full frame camera)
- Focal length & maximum aperture: 24 millimeter 1:2.8, maximum magnification of x0.27
- Slimmest and lightest lens of the EF S series
- Circular aperture (7 blades) delivers beautiful, soft backgrounds
- Full time manual focus allows manual focus adjustment while in One Shot AF mode
EF/EF-S 420-800mm F8.3 Telephoto Zoom Lens(MF) for Canon EOS Rebel T8i/T7i/T7/T6i/T5/T3i/T2i/XSi/SL3/SL2/T100/90D/80D/70D/50D/5D Mark IV/6D II/7D II/1D X III II-Manual Focus DSLR Cameras Lenses(White)
- [Easy-to-Use Warm Tips] – ⚠Fully manual(Advantages: precise focus control, creative freedom, high adaptability, stability and durability, and learning value) lens has no electronic contacts for focusing. Switch the camera to full manual (M) mode immediately after installation, otherwise the “no lens” error may be triggered; ⚠If the error still occurs, you need to enable the “Release shutter without lens” option in the camera menu.
- [Professional Manual Focus Experience] – Tailored for photographers who pursue the ultimate, the 420-800mm F8.3 lens adopts a fully manual focus design, requiring photographers to carefully adjust parameters such as shutter speed, ISO and aperture before shooting. This process not only exercises photographic skills, but also inspires unlimited artistic creativity, helping you to transcend conventions and explore the infinite possibilities of photography.
- [Super Telephoto Zoom Lens] – 420-800mm f/8.3-16 full-frame zoom lens is designed specifically for professional photographers. It includes an adapter ring at no additional cost. Features include precision manual focus with a large focus ring design and an internal focus mechanism, UMC technology to minimize aberrations and flare, resulting in sharp images with exceptional background bokeh. The aperture automatically adjusts based on focal length (f/8.3 at 420mm, f/16 at 800mm), and it is compatible with 62mm filters and EF/EF-S mounts.
- [Wide Compatibility with Canon EF/EF-S Mount] – Lightdow 420-800mm f8.3 telephoto lens is perfectly compatible with for Canon EOS Rebel T8i/T7i/T7/T6s/T6i/T6/T5i/T5/T4i/T3i/T3/T2i/T1i/XSi/XS/SL3/SL2/SL1(100D) & Digital Rebel/XTi/XT/T100(4000D) & EOS 90D/80D/77D/70D/60D/50D/40D/30D/20D/10D/7D Mark II/7D/6D Mark II/6D/5DS R/5DS/5D Mark IV/5D Mark III/5D Mark II/5D & EOS-1D X Mark III/1D X Mark II/1D X/1Ds Mark III/1Ds Mark II/1Ds/1D Mark IV/1D Mark III/1D Mark II/Mark II N/1D.
- [Capture Capabilities] – 420-800mm manual focus telephoto lens excels at capturing detailed images of distant subjects, effectively bringing remote objects closer. It is ideal for photographing the moon, wildlife, birds, buildings, airplanes, landscapes, and more. The aperture range is F8.3-16, and it automatically adjusts with the focal length. Consequently, the camera cannot set the aperture value of the manual lens, resulting in the display of F00/F– on the camera.
KEYWING Phone Camera Lens 3 in 1 Phone Lens Kit, 198 Fisheye Lens + 120 Super Wide-Angle Lens + 20x Macro Lens for iPhone Samsung Android Smartphone Black 3in1
- 3 in 1 Phone Camera Lens Set: Every lens can be used separately. The 20X Macro lens has a best focusing distance of 1.18-3.54 inch, help you to explore the microworld. 120° Wide lens can expand the shooting area of 10%, make a bigger view to the world. 198° Fisheye lens can produce a strong visual effect to make thing cuter
- High Quality: Professional HD Lens with advanced lanthanide optical glass can reduce the reflection and ghosting, bringing you amazing vision with details and clarify. High quality grade aluminum shell can protect the glass offering a long durability
- Clip-on Phone Lens: Easy Use Design. Just attach the lens to the clip and clip it on the phone camera, then you can enjoy the amazing effect of the lens. The clip has soft rubber to avoid scratch on your phone. Strong spring can hold on tightly
- Compatible with Most Smartphones: Universal design of 3.6 cm clip make the lenses compatible with most iPhone, Samsung google phone etc. Note: For different model you might have to use different way to clip the clamp. NOTE： Do Not use with phone case for a better effect.
- Package Content: 1x 120° Wide Angle Lens, 1×198° Fisheye Lens, 1x 20X Macro Lens, 1x Universal Clip, 1x Storage Bag, 1x User’s Manual
When it comes to camera lenses, the “mm” in the name stands for millimeters. This is a unit of measurement that’s used to describe the physical size of the lens.
The number that comes before the “mm” indicates the diameter of the lens, while the number after the “mm” refers to the focal length.
The focal length is the distance between the lens and the image sensor (or “film plane”), and it’s what determines how much of the scene in front of the camera will be captured in the image.
A lens with a shorter focal length will have a wider field of view, while a lens with a longer focal length will have a narrower field of view.
For example, a “kit lens” that comes with many entry-level DSLR cameras has a focal length of 18-55mm. This means that the lens has a diameter of 18mm and a focal length of 55mm.
The “mm” in camera lenses is thus a way of indicating both the physical size of the lens and its focal length. The larger the number, the longer the focal length and the narrower the field of view.
How does mm affect the image quality?
When it comes to camera lenses, the mm measurement refers to the focal length of the lens. In other words, it’s the distance between the lens and the image sensor (or film) when the subject is in focus.
A higher mm number means the lens has a longer focal length and therefore a narrower field of view. For example, a 50mm lens will have a much narrower field of view than a 10mm lens.
This can be useful for things like portraits, where you want to focus on a specific subject and blur out the background.
What are the benefits of a higher mm lens?
When it comes to camera lenses, the mm number refers to the focal length of the lens. A higher mm number means that the lens has a longer focal length, which allows you to zoom in on your subject from a distance.
This can be helpful for capturing close-up shots of distant objects, or for getting a better view of a scene when you can’t physically move closer to it.
A longer focal length also has the added benefit of making objects appear closer together in the frame, which can be useful for creating a more compact composition.
And, because you’re able to frame your subject more tightly, a longer focal length can also help to isolate your subject from the background for a more striking image.
Are there any disadvantages to a higher mm lens?
When it comes to camera lenses, the mm measurement refers to the focal length of the lens. A higher mm number means a longer focal length, and thus, a higher zoom.
So, a 100mm lens will zoom in much more than a 50mm lens.
However, there are some disadvantages to having a higher mm lens.
First, they are typically more expensive. Second, they are usually heavier and bulkier, making them less ideal for travel photography. Third, they can have a narrower field of view, making it more difficult to capture wide shots.
Overall, whether or not a higher mm lens is right for you depends on your photography needs and budget. If you need a lot of zoom power and can afford the price tag, then a high mm lens may be a good option. But if you’re looking for a lighter and more affordable lens, then a lower mm lens may be a better choice.
What is the ideal mm for a camera lens?
When it comes to camera lenses, the measurement in millimeters (mm) is used to indicate the lens’ focal length. The focal length is the distance between the lens and the image sensor when the subject is in focus.
A lens with a shorter focal length will have a wider field of view, while a lens with a longer focal length will have a narrower field of view.
What are some common misconceptions about mm in camera lenses?
A common misconception about mm in camera lenses is that it stands for millimeters. However, mm actually stands for millimeters of focal length.
The focal length is the distance between the lens and the sensor when the subject is in focus. A higher focal length means that the lens can zoom in on a subject from further away.
How can you choose the right mm for your camera lens?
When it comes to choosing the right mm for your camera lens, it’s important to understand what the mm actually represents. In short, mm is a unit of measurement that refers to the focal length of your camera lens.
The focal length is the distance between the lens and the image sensor, and it’s what determines how much of the scene in front of you will be captured in the photo.
So, how do you choose the right mm for your camera lens? It really depends on what you’re trying to achieve with your photography.
If you’re looking to capture a wide angle of view, then you’ll want a lens with a shorter focal length. On the other hand, if you’re trying to get a close-up shot of a particular subject, then you’ll need a lens with a longer focal length.
Of course, there are also lenses that offer a zoom feature, which means that you can adjust the focal length to get either a wide or narrow field of view. These lenses are a great option if you’re not quite sure what mm you need, as they offer a bit of flexibility.
Ultimately, it’s up to you to decide what mm is right for your camera lens. Just keep in mind that the mm measurement refers to the focal length, and that the focal length will determine how much of the scene is captured in the photo.
Conclusion
In conclusion, mm in camera lens refers to the focal length of the lens. The focal length affects the image quality and the benefits of a higher mm lens are that it allows for a greater depth of field and a more detailed image. There are some disadvantages to a higher mm lens, such as the increased size and weight, but the ideal mm for a camera lens depends on the type of photography you are doing. Some common misconceptions about mm in camera lenses are that a higher mm means a better quality image, but this is not always the case. You can choose the right mm for your camera lens by considering the type of photography you will be doing and the desired results.