The Ideal Focal Length for Portraiture: A Photographer’s Experiment
When framing a photo, have you ever considered the focal length at which you are framing the subject? The examples above represent the same subject, framed in the same manner yet they have strikingly different appearances due to the difference in focal length. Framing a subject inside a shot can be done two separate ways; working distance from the camera to the subject, or the focal length. In this example we start by taking a 24mm shot just inches from the subject’s face, filling the lens with her face and shoulders. Using this shot as a reference,
I took a few steps back, reframed the subject identically sized for the 35mm shot, and continued all of the way up to 165mm. As the series of shots progressed to the 165mm shot, I was 12-14 feet away from the subject. When you look through this series of photos, it is clear that the smaller focal lengths have the effect of distorting the subjects face and in this case brought out her nose prominently. Look at the size of her nose, eyes, and eyebrows. I can assure you that this is NOT what she looks like in person.The shorter focal lengths also appear to give the face a very angular and slim appearance. As you pass the ideal focal length for portraiture and shoot at 135 or 165mm, the girl’s face seems to flatten out and become wider than it is in person.
There are obvious reasons for all focal lengths, and different situations for every lens arrangement. In my experience, when shooting primarily portraiture, the ideal focal length ranges from 70-100mm from your subject utilizing 6-10 feet of working distance between the camera and the subject.
In the next set of photos I have framed the same shot at two extremes of the spectrum, 24mm and 160mm. In this particular photo, the only difference technically in the two shots is the focal length and the working distance between the camera and the subject. As you can see, the girl is approximately the same size and the photo was taken at the same angle. Notice the bush and fallen trees in the background of this photo. Notice the difference in what appears to be the size of the bushes. This is due to the compression that is created by the telephoto lens being shot at 160mm.
One thing to take into account is the format of the camera that you are using. The focal lengths used in this article apply to a full frame and not a camera that has a crop sensor. If you shoot with a camera that has a crop sensor, you need to translate the focal lengths to a focal length that would yield the same field of view as the full frame that was used.
Next time that you are on a shoot, try to shoot the same shot using an array of different focal lengths and determine your personal preferences. Photography is artistry and if you are looking to shoot something that is to ultimately appear less than realistic, and/or you are going for that quirky look and feel to your photos, distortion and different focal lengths is one way to achieve it. So, make sure to keep focal length and working distance in mind next time you go to push that trigger finger and your sure to find a variety of perspectives for each shot!
Haleigh Rohner is a photographer in Arizona, where she was born and raised. She is married, with four children… the youngest of which just turned 1 month old. She specializes in the photography of newborns, children and families. Check out her site to see more of her work.