Camera

A digital single-lens reflex camera is a digital camera that combines the optics and the mechanisms of a single-lens reflex camera with a digital imaging sensor, as opposed to photographic film.
There are many types of cameras out there, but when it comes to advanced, interchangeable lens models, nothing is more iconic than the DSLR. The name is practically synonymous with “professional camera,” but a wide variety of DSLRs exist, covering a broad spectrum of users from amateur to advanced. The popularity of the DSLR has waned in recent years with the rise of smaller mirrorless cameras, but it’s still a beloved format by many for a few key reasons.
DSLRs typically use autofocus based on phase detection. This method allows the optimal lens position to be calculated, rather than “found”, as would be the case with autofocus based on contrast maximisation. Phase-detection autofocus is typically faster than other passive techniques. As the phase sensor requires the same light going to the image sensor