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MMulti-Area AF-Assist Illuminator

Multi-Area AF-Assist Illuminator, built-in to select Speedlights, can be used with all focus-areas of cameras compatible with the Nikon Creative Lighting System to give you autofocus shooting capability in extremely dim lighting.

If light in a scene is so low that the camera's AF system cannot "see" the subject, and thus cannot focus on it, turning on the Speedlight's AF Assist Illuminator will project a patterned beam of light on the subject; the AF system can then achieve autofocus by focusing on that pattern.
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Multiple Flash
Refers to the use of more than one flash unit to illuminate a subject or scene. It's a technique that enables creative control of lighting effects.
Multi-area Mode Full HD D-Movie Mode
Select Nikon D-SLRs feature a Multi-area crop mode for movies. This includes FX format, DX format, and a specific 1920x1080 crop mode. Find out more.
Movie Light
A feature incorporated into select Nikon digital cameras, the Movie Light enables you to illuminate your subject in low-light conditions to assist in recording movie footage. It can be found in the Menu, under the Movie Tab.
Motion Detection
Motion Detection helps you produce sharper results by automatically selecting a faster shutter speed and higher ISO (light sensitivity) setting to compensate for subject movement or camera shake. Find out more.
Multishot 16
Select Nikon digital cameras offer a Multishot 16 mode. When the camera is set to Multishot 16, each time the shutter is pressed, the camera will capture 16 frames at a rate of 30 fps (frames per second). Find out more.
Moiré
An interference pattern created when a repeating pattern in the subject is overlaid on the image sensor grid. In Nikon D-SLRs, moiré is greatly reduced by means of advanced image processing algorithms and optical low-pass filters.
My Picturetown
Nikon's image storage and sharing service on the internet. Find out more.
Maximum Aperture
The maximum diameter of the lens opening is referred to as its maximum aperture or minimum f-number. The minimum f-number is the smallest f-number that can be selected with the lens. Find out more.
Matte Field
A granular textured surface that disperses light in order to form a clear image. Used in the viewfinder optical system.
Multiple Exposures
A technique that involves taking or more images of different subjects or successive pictures of the same subject on the same frame.
Manual Exposure
An exposure for which you set both the shutter speed and lens aperture.
Micro-NIKKOR
A Nikon lens specially designed for close-up photography. Micro-NIKKORs focus from infinity down to a reproduction ratio of 1:1 or more without accessories.
Multi-Sensor Balanced Fill-Flash
A type of automatic balanced fill-flash that provides flash output control while the camera’s exposure control system determines the background exposure.
Motion Priority
A photo technique that you can choose when shooting in the Smart Photo Selector mode of the Nikon 1 digital cameras. Find out more.
Monaural
Sound reproduction that uses only one channel. Monaural or mono uses only one channel, whereas stereo uses two or more channels and is more natural sounding.
Motion Snapshot
The Motion Snapshot mode allows you to capture a second of movie footage and a still image each time the shutter is pressed. Find out more.
MPEG-4
Nikon cameras can record video to the MPEG-4 AVC/H.264 file format. MPEG stands for Moving Pictures Experts Group. Find out more.
Mirror Cutoff
A slight darkening of the edge of the viewfinder image due to the technical limits on the size of the reflex mirror. It may occur when you're using long telephoto lens or a bellows. It is visible in the viewfinder, not in the picture.
Motor Drive
Powered film advance in film cameras.
Megapixel
Equal to one million pixels.
Mirror Up Mode
Mode featuerd in select D-SLRs. Press the shutter-release button once to raise the mirror, again to take photograph (shutter will be released automatically if shutter-release button is not pressed for 30 seconds after mirror up). Find out more.
Mirror up mode (MUP)
Choose this mode to minimize camera shake in telephoto or close-up photography or in other situations in which the slightest camera movement can result in blurred photographs. Find out more.
Microprism
A focusing aid located in the focusing screen.
M/A
Select NIKKOR lenses have a focusing mode which allows switching from automatic to manual focusing with virtually no lag time by simply turning the focusing ring on the lens.
Matrix Balanced Fill-Flash
Nikon's through-the-lens (TTL) automatic fill-flash system using Nikon's Matrix Metering system.
Media
Material that information is written to and stored on. Digital photography storage media includes CompactFlash cards and CDs.
Macro Photography
Refers to close-up photography, particularly photography that results in the subject appearing close to life-size in the image.
MicroDrive
MicroDrive is the brand name for a miniature one-inch hard disk that fits in a CompactFlash Type II media card slot. Find out more.
MOV
.MOV is an Apple Inc. QuickTime file format. It is commonly used for saving movies and other video files.
Monopod
A single-leg support—essentially a pole—used to help stabilize a camera. Sometimes called a unipod.
ME-1 Stereo Microphone
The Nikon ME-1 Stereo Microphone is an optional accessory that sits on the camera’s hot shoe and connects to compatible D-SLR cameras via a 3.5mm Mic jack. Find out more.
Magnetic Storage
See storage
Meniscus Glass
Nikon's exclusive protective glass for NIKKOR lenses comes attached to the front of fast super-telephoto lenses. Find out more.
Miniature Effect
A Special Effect available on certain Nikon D-SLR cameras. Distant subjects captured in this mode appear as miniatures. When capturing D-movies in this mode, playback looks like a time lapse movie and sound is not recorded.
Macro Lens
A lens capable of extreme close-up photography in which the captured image (on the film or image sensor) is typically from half life-size (1:2 reproduction ratio) to life-size (1:1 reproduction ratio).
Micro Photography
Refers to taking close-ups in which the resulting image shows the subject ranging from life size (1:1) to 50 times (50:1) magnification.
Macro Focusing
Often refers to the capability of certain zoom lenses in which the lens group moves, enabling the lens to focus closer than the normal close-up focusing distance.
Macro Adapter Ring
An adapter mounted on the front of a lens to allow use of the lens in reverse position.
Megabyte
A Megabyte (mb) is a measurement of data storage equal to 1,024 kilobytes (kb) or roughly 1,000,000 bytes. Often referred to as a meg or megs.
Multi-Area AF-Assist Illuminator
Multi-Area AF-Assist Illuminator, built-in to select Speedlights, can be used with all focus-areas of cameras compatible with the Nikon Creative Lighting System to give you autofocus shooting capability in extremely dim lighting. Find out more.
M (mode on Nikon Speedlights)
Mode on Nikon Speedlights, whereby the Speedlight always fires at a specified output determined by user on the Speedlight itself.
Mired Color Temperatures
Any given change in color temperature produces a greater difference in color at low color temperatures than it would at higher color temperatures. Find out more.
Mic
Mic is short for microphone. Find out more.
Matrix Metering
An advanced metering mode in which the camera's computer sets exposure based on its analysis of the scene's components. Generally regarded as the most accurate metering for most lighting situations, including those with complex lighting. Find out more.
Mirror Lockup
A feature that allows you to manually raise and lock the reflex mirror in a single-lens reflex camera. Useful for preventing camera shake caused by mirror movement.
Micro Lens
For most purposes, a micro lens is another term for a macro lens. Both terms indicate extreme close-up capability; macro and micro lenses produce half life-size (1:2 reproduction ratio) to life-size (1:1 reproduction ratio) images.