Editing 135 film (section)

== Use in digital cameras ==
{{unreferenced section|date=October 2021}}
[[file:CMOS Image Sensor Big and Small.jpg|thumb|right|A 35&nbsp;mm format "full frame" digital image sensor (left, in green) is revealed inside the mirror box of a Canon DSLR camera.]]
{{more|Full-frame digital SLR|Full-frame mirrorless interchangeable-lens camera}}

Digital sensors are available in various sizes. Professional DSLR cameras usually use [[digital image sensor]]s which approximate the dimensions of the 35&nbsp;mm format, sometimes differing by fractions of a millimetre on one or both dimensions. Since 2007, Nikon has referred to their 35&nbsp;mm format by the [[trade mark]] FX. Other makers of 35&nbsp;mm format digital cameras, including [[Leica Camera|Leica]], [[Sony]], and [[Canon Inc.|Canon]], refer to their 35&nbsp;mm sensors simply as full frame.

Most consumer DSLR cameras use smaller sensors, with the most popular size being [[APS-C]] which measures around 23×15&nbsp;mm (giving it a [[crop factor]] of 1.5–1.6). Compact cameras have smaller sensors with a crop factor of around 3 to 6.

=== Use in smart phones ===
Most smartphones (as of 2024) have a default [[Aspect ratio (image)|aspect ratio]] of 4:3 (1.33). Mimicking 35mm film in a smartphone requires cropping to a 3:2 (1.5) aspect ratio. For an authentic homage, one can apply creative digital filters like the ones commonly used in [[Instagram]] that map the [[ICC profile|colour profile]] to a characteristic look. Different brands of 35mm film would achieve the creative colour profile through a chemical process. For example Fuji [[Velvia]] film gave the photo a characteristic of saturated colours under daylight, high contrast, and exceptional sharpness.