A-Clamp: noun, spring clamp with rubber tips in a variety of sizes. Usually, your options are: Small (1”), Medium (2”), Large (3”). Medium is the most common.

Ad Agency: noun, An advertising agency, often referred to as a creative agency or an ad agency, is a business dedicated to creating, planning, and handling advertising and sometimes other forms of promotion and marketing for its clients. An ad agency is generally independent from the client; it may be an internal department or agency that provides an outside point of view to the effort of selling the client's products or services, or an outside firm.

Ad Job: noun, photoshoots for advertising campaigns of any sort, print, digital, social, tv. Bigger budgets, bigger crew, better pay, better catering, more responsibility, more gear, more stress, more pressure.

Adjust: verb, the action of changing, enhancing, or editing an image in photo editing software

Adjustment Layer: noun, in use with non-destructive photo editing software: a separate layer or layers that overlays the image and allows you to make adjustments to the image without affecting the original image. This is a feature in Capture One, Affinity Photo, Photoshop and other non-destructive editing software.

Agent: noun, Business representative to a photographer, model, stylist, MUA, or any other freelancer. Some agents and agencies provide production and accounting services along with the nitty-gritty of negotiating contracts and marketing. You may be hired by an agent on behalf of a photographer or paid directly from an agency instead of the photographer or client.

Ambient Light/Available Light/Natural Light: noun, the light inherent to the scene before you begin shaping or adding light. Ambient light can be daylight or any kind of light/lighting that you find inside the location you are shooting in.

Apple Box: noun, the most useful tool on set. A wooden box strong enough to stand on with a handle cut into each end. The typical size is twenty inches long, a foot wide and 8 inches deep (20” x 12” x 8”). Matthews is the brand you’ll see the most.

Aperture: noun, the variable opening in the lens that controls the amount of light that reaches the sensor or film. The size of the aperture opening is measured in f-stops with the standard openings on most professional lenses ranging from f2.8 through f22. The size of the aperture is measured inversely to its name. f2.8 is the largest aperture opening on many lenses, letting in the most amount of light. While, f22 is the smallest aperture on many lenses, letting in the least amount of light. The aperture controls the depth of field for the focal plane with the large apertures (ie f2.8) creating a shallow depth of field, while the smaller apertures (ie f22) create a deeper depth of field. The iris and pupil in your eyes work in a similar fashion. You can recreate this effect by making a hole with your index finger and thumb. Look through and you’ll see the depth of field changing as you change the size of the opening between your fingers. A small opening will have more in focus and a wide opening will reveal a softer focus. When assisting, aperture is usually prioritized over the ISO and shutter speed. Many photographers and their clients want a large depth of field with the subject completely in focus which requires small apertures, like f11 and down. These photographers will require large amounts of light, like 2400 or 3200 watt power packs and bi-tubes. While photographers who prefer lower f-stops (like f5.6, f4, f2) will use low-powered strobes, continuous lights and daylight.

Approval: noun, usually refers to client approval. Can you ask the client to come the digi station? We need client approval before we move onto the next shot.