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Understanding camera lenses: Layout

A camera lens layout

We have two types of photographers: those satisfied with pocket-sized powerhouse phones and enthusiasts photographers like you. An enthusiast is one who loves intricate DSLR camera with manual controls and interchangeable lenses. His utmost satisfaction comes from the artistic output that he can achieve.

Let’s assume you’re an enthusiast and getting your DSLR camera, and a standard zoom is “wow.” In essence, you’ll take hundreds of shots and enjoy the quality from an enormous imaging sensor. Besides, you will thrill social media followers and alike. Although everything is dazzling with your pictures, you realize far objects look small. Again in some instances, you can’t get close-up of your shots. In other words, you need a telephoto lens to bring a distant object closer and bigger.

So, that is why today I want you to understand camera lenses in details. If you want to make a different view to your photography, keep scrolling.

Understanding camera lenses: Lens Hood

It’s a device you’ll see on the front end of a lens to prevent flare and ghosting. Also, it helps protect the lens from scratches without the need of a lens cover. Besides, they will help you improve the contrast and colors of your photos.

Understanding camera lenses: Focus ring

If you enjoy working with a manual focus on DSLR, you’ll agree with me that the focus ring is an important part. How it works is simple, you turn the ring while looking through the viewfinder to set focus. 

Understanding camera lenses: Distance scale

Notably, it sits near the back of the lens when you twist the focus ring, distinct parts of the shot you make come into focus.

Understanding camera lenses: Zoom ring

The zoom ring mechanism allows you to change the focal length in real-time as you take photos. Usually, cameras nowadays come with a rubber ring.

Understanding camera lenses: Lens mount

A lens mount is a joint which connects the camera body and lens. It can operate through mechanical or electrical means, depending on your camera.

 Here is an outline of the popular standard lens mount:


T stands for Tamron, a Japanese company that manufactures lenses and accessories. T-mount or M42 mount system, as often called, consists of a T-ring, T-adapter, and a lens. In most cases, they are used as alternatives to F- mount for line scan cameras.

A picture of a mountain zoomed by telephoto lens
A telephoto lens to bring a distant object closer and bigger.


Besides, it uses threads measuring 42mm and 48mm diameter and a pitch of 0.75mm.

Best T-mount adapters

Opteka T-mount Adapter

  • It’s high-quality anodized aluminum that allows you to mount any T-mount lens onto the Canon EOS camera body.
  • It gives you more options since you can use it across different camera platforms.
  • It’s compatible with many T-mount lenses. Here you can use it in 500mm preset, 420-800mm, and 650mm-1300mm.

Celetron 93419 T-ring adapter for Canon EOS

  • It attaches to Canon EOS DSLR and other SLR camera body
  • It works only with a canon EOS model camera- from 1D through 700D. Again, I can work on rebels from T2i through T5i.
  • They are made of lightweight metal.

UltraPro T/T2 lens mount adapter for Nikon SLR

  • Compatible with Nikon SLR camera models such as D-90/80/70/60/50/40/40X/800/700. Also, compatible with D-600/300/200/100/7000/5200/5200/5100/3200/3100/300/4/3X.
  • You can also use it with telescope and microscope attachment.


  • They are quite a small lens mount systems used in surveillance CCTV and webcams.
  • You can only make a minimum adjustment on them.
  • S-mount uses thread with m12x0.5mm


  • They are used mostly in machine vision applications and applications such as 16mm movie cameras, CCTV cameras, and microscope tubes.
  • Not suitable for larger sensors cameras because it has a small diameter – 1nch (25.4) mm.

Best C-mount lenses

35mm f1.6 APS-C CCTV Lens for 16mm C Mount Camera

  • It is a C-mount camera lens that works with Canon, Nikon, Sony, Fuji, and Olympus.
  • It features alloy casing
  • Suitable for places such as bars, parking lots, shops, or even warehouses.

Vanxse 2.-12mm 1/3 Auto-iris Cs-Mount

  • It features 1/3 inch format DC drive
  • It allows the maximum focal length of 60mm and a maximum aperture of 1.4f

Fujian 35mm f1/7 lens

  • Fujian 35mm is a macro lens that works well with c-mount and or Mirrorless cameras.
  • It features a full metal body and large aperture of F1.7
  • They are ideal for places such as bars, parking lots, shops, or even warehouses.


F-mount is a name from the Nikon Company for Nikon’s SLR camera lens mount system. In particular, it’s compatible with NIKKOR lenses.

Also, F-mount allows you to choose from a large selection of lenses. It can include:

  • AF-S
  • PC-E

Moreover, some features you’ll get here are autofocus, advanced metering, electronic aperture control, and more.

Understanding camera lenses: Aperture ring

Usually, the aperture controls the amount of light reaching the camera sensors. An aperture ring is the first ring you’ll see on the body of your lens.

The ring operates by mechanical means to control the aperture diaphragm size. In most cases, the aperture ring exists in old manual focus lenses.

Best Nikon lenses with aperture ring

Nikon -AF NIKKOR 50mm

  • It features a wide-open aperture and can capture crisp photos without using a flash.
  • Suitable for shooting stills and videos
  • They perform better in the low light shooting. Here, the f/1 and larger 50mm collect a lot of light for your subject.

Nikkor AF-S 28mm

  • Enhance portraits and landscape shots.
  • Features a maximum aperture of F1/4
  • It also has an autofocus motor that allows you to have quiet shots.

Nikon AF-S NIKKOR 50mm

  • It features an aperture range of f1.8 to f/16
  • Suitable for both low light performance and control over depth of field.
  • It comes with a silent motor that allows quiet shooting 

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