What Equipment You Might Want to Use
In addition to understanding how to manually use a DSLR, mirrorless, or medium-format camera, you will need to understand the laws of light. If you are looking for studio-quality headshots versus natural light, you will also need to understand how to use studio lighting alongside your camera. Specifically, you will need to be able to use off-camera lighting, light modifiers, commercial grade cameras, and lenses.
As for buying the equipment, you will need to spend more than $10,000 to match the quality of higher-end photographers. So, you will be better off renting the equipment. But why purchase or rent if the cost of paying a professional is less? So, again, there is that.
Also, you will need to know what lens suits you best. This usually ranges from 85mm to 135mm, depending on your features. You might then just get a zoom lens instead of a prime so you can have all those focal ranges in one lens. But the trade off is usually prime lens quality is superior to a zoom lens.
Other Factors Beyond the Camera and Lighting
There is much more to it than just the camera, lens, and lighting you will want to use. There are background options to consider. If you want a studio look you will need to rent one or buy appropriate backdrops.
It is not just knowing how to use photography gear but also what gear to use in the first place. This goes beyond lens choice to also lighting choices and whether light modifiers should be used. Depending on your goal with the headshots, how many lights you should use also matters. For example, lighting for a theatrical-look actor headshot is not the same a lighting for a realtor’s business card.
Of course, there are no set rules for what gear or brands to use, and this varies by photographer. However, for optimal results start with a full-frame DSLR or mirrorless camera. You can also consider a medium format camera but that is seriously more of an investment.
As mentioned, studio lighting with modifiers is also optimal to use. There are other devices necessary to use the equipment mentioned herein but, for the sake of brevity, we will not mention everything.
You will also want post-production software to polish the headshot. Everyone can use some retouching – stray hairs happen, lint, red eye, perhaps some acne or other temporary scars that need to be removed, and so on.