Silent shooting uses an electronic shutter to reduce or eliminate mechanical shutter noise. Learn where it is useful and what trade-offs to understand.

Some zoom lenses can maintain focus while zooming, while others require refocusing. Learn the difference between parfocal and varifocal behaviour.

Autofocus micro adjustment can help correct small front- or back-focus errors on compatible DSLR systems. Learn what it does and when it should not be used.

Pancake lenses are unusually compact lenses designed to keep a camera setup small. Learn their advantages, trade-offs and who should consider one.

Lens compression is often used to describe how distant subjects appear closer together in photographs. Learn what actually causes the effect and how shooting distance matters.

Some zoom lenses change length while others keep the barrel nearly fixed. Learn how internal zoom works and why photographers may prefer it.

Pre-capture lets compatible cameras temporarily buffer images before the shutter button is fully pressed. Learn how it works and when it can help.

A focus limiter switch restricts the distance range through which a lens searches for focus. Learn why it can speed up autofocus and when to use it.

Lens coatings help control reflections inside optical systems. Learn what single coating, multicoating and modern anti-reflective coatings can mean for real-world photography.

A teleconverter can increase the effective focal length of a compatible lens, but it also affects light transmission and performance. Learn when a 1.4x or 2x extender makes sense.

A lens hood is more than a small accessory. Learn how it reduces stray light, helps control flare, protects the front element and when you should actually use one.

Sensor dust can create repeated dark spots in photographs. Learn the sensible order of checks, when the camera's built-in cleaning can help and when to avoid risky cleaning methods.

Modern cameras can offer mechanical and electronic shutter modes. Understanding the difference is useful because each has advantages and limitations. What Is a Mechanical Shutter? A mechanical shutter uses physical components to control exposure. Shutter curtains operate to expose the sensor. What Is an Electronic Shutter? An electronic shutter controls exposure electronically through the sensor rather than operating the mechanical shutter in the same way. One advantage can b

Image stabilization can make handheld photography and video easier, but stabilization systems do not all work in the same way. You may see terms such as IBIS, OIS, IS, VR and OSS. What Is IBIS? IBIS stands for In-Body Image Stabilization. The stabilization mechanism is built into the camera body and moves the sensor to compensate for certain types of camera movement. What Is Lens Stabilization? Lens-based stabilization places the stabilization mechanism inside the lens. Diffe

The phrase weather sealed can make a camera sound almost waterproof. It is not. Weather resistance is one of the most misunderstood camera features. Weather Sealing Is Not Waterproofing A weather-resistant camera may have design features intended to reduce risk from light rain, dust or moisture. It does not mean the camera can safely be submerged or exposed to heavy rain indefinitely. Why Does Weather Resistance Matter? Outdoor photographers may encounter light rain, dust, hu

Camera specifications are easy to compare, but weight and physical size deserve more attention. A camera that you actually carry can be more useful than a technically impressive camera that stays at home. Bigger Does Not Automatically Mean Better A larger camera may provide a larger grip, more controls, a larger battery or additional ports, but these advantages can come with increased size and weight. Think About Your Actual Routine If you mainly photograph in a studio, weigh

One major difference between mirrorless cameras and DSLRs is the type of viewfinder they use. Mirrorless cameras commonly use an electronic viewfinder, while DSLRs commonly use an optical viewfinder. How Does an Optical Viewfinder Work? An optical viewfinder lets you look through the camera's optical system and see the scene directly. It does not use an electronic display to generate the view. How Does an Electronic Viewfinder Work? An EVF uses a small electronic display to s

Your camera hardware does not change after purchase, but its firmware can sometimes be updated. Firmware is the software that controls many camera functions. What Can a Firmware Update Change? Fix operational bugs Improve compatibility Address recording issues Improve stability Add features Support newer accessories or lenses Should Every Camera Always Have the Latest Firmware? Firmware updates should be considered using the manufacturer's official release notes and instructi

A camera can have excellent autofocus and still produce an image that is not sharp where you expected it to be. If photographs regularly come out soft, the problem may not be the camera itself. Autofocus settings, subject movement, lighting, lens behaviour and shooting technique can all affect where the camera focuses. The Focus Point Is on the Wrong Area When several objects are close together, the camera may focus on something other than your intended subject. This is commo

Eye autofocus can make portraits and moving-subject photography easier. Learn what Eye AF does and when it is worth considering.