It often surprises photographers to learn that there is an enormous difference between commercial and advertising photography. For instance, a commercial photographer frequently finds themselves taking pictures that are intended for use entirely in the retail and wholesale sectors, or in creating images that will be used in sales materials or promotional efforts.
The advertising photographer, on the other hand, is taking many different types of pictures and most are intended to sell products of all kinds or even just to market “ideas”. One day might see them photographing the exterior of a hotel while the next day might find them using a light box and macro photographic techniques to capture the glittering jewels in a designer bracelet.
What else would a commercial or advertising photographer need for their work? There will usually always be the need for a good tripod, some portable lighting fixtures, and a few essential filters. These tend to include the ND (neutral density) and the polarizer at the very least. These are the filters that can be used to eliminate glare or lens flare and to help to capture colors in a super-saturated amount. A lens hood is also good for helping with issues connected to sunlight as well.
In the current climate there tends to also be the need for a macro setting or lens for the DSLR, a cable release to help with delicate shots that might be lost to any camera shake, and special lighting devices that help to make deep zoom photography successful.