Photography Friday – Focus
Focus = : directed attention : emphasis
— in focus : having or giving the proper sharpness of outline due to good focusing
(Thank you, m-w.com, for this definition; remember, I’m an English teacher by educational training, so I LOVE me a good dictionary entry! – and, yes, I realize the grammar is incorrect. I’ll often keep you guessing, just as I do the students in my classroom, “Did she do that on purpose or does she not know the rule?” If I’m really good, you’ll never know which answer applies.)
Can I admit this Photography Friday thing is t-o-u-g-h? I’ve started two other posts, and each time I have realized that you need to know something else before you can start with what I’m writing about. I think this one (try #3) is the one to start with.
When you take a picture, you want your subject to be in good focus. I mean, there’s a good reason people get glasses when their focus goes bad. More specifically, you want your subject’s eyes to be in focus (assuming you are photographing an object with eyes, and no, not your potatoes).
The first issue to decide is manual versus auto focus. I’m 99% of the time an auto focus gal. My camera is known to have an excellent auto focus system and the lenses I use are excellent at auto focus (minus the 105 macro), so I let them do their thang.
Go get your manual. Realize that I’m speaking from the Nikon vantage point from my D700 manual. I’m not sure what features your camera has, but your manual will. Sometimes they have different names, too. Don’t be afraid to do what I do: ask Google!
My camera has three choices for focus mode: single (single-servo), continuous (continuous-servo), and manual. In single I lock the focus on an object and that focus doesn’t change even if the subject moves. I use this for newborn sessions, senior sessions, and family sessions. In continuous mode, I choose the focus and as my subject moves, the focus moves. I use this one at my children’s sports events and when photographing toddlers and pets. Manual setting means that the camera will not focus for you – you have complete responsibility and control over focus.
My camera also has three choices for auto focus area mode. This selects HOW and WHERE I focus in the image. One choice I have is single. I choose one point (from 51 points in the D700) to focus. I use this 98% of the time. I compose my shot (using the rule of thirds because I crop in camera – another lesson for another day), use a dial on the back of my camera (you may have different settings) to toggle the focus point to the eye closest to me, focus (by pressing my shutter release halfway down, but there are other methods – see your manual), and take the shot.
Another choice of auto focus area mode I have is dynamic. Here I make the initial choice of where my camera focuses and when my subject moves, the camera moves the focus point to follow. I use this one (with a cool 3D tracking in my camera) at sports events.
The third choice I have is auto where the camera uses its face recognition skills to focus. I’m a control freak, so I don’t use this.
Tip to remember when focusing:
Your camera needs contrast to focus. If what you’re focusing on is all one color (red dress on red background) or in the dark (in a dark shade or at night), the sensor in the camera has a hard time distinguishing where to focus.
I run into this often with a close up shot of a newborn. I adore the shots of the eyelashes, but often the eyelashes are a light color lying on top of the light skin. The camera knows I’m telling it to focus, but can’t find a good way to distinguish between the light eyelash & the light skin. Option #1: I usually compose, focus, and then override my auto focus and tweak with manual focus. In the D200 & D700 (the only two DSLRs I’ve operated) you can focus by holding the shutter down half way and then manual focus using the lens – just don’t let go of the shutter in the process or you have to start over. Option #2: You can compose & focus on something near your focus point, recompose & shoot. For instance, the eyelashes won’t focus, but the corner of the eye has clear lines for the camera to read. I could focus on the corner of the eye, recompose (move the camera) to the eyelash & shoot. I shoot with large apertures (such as 1.4 on my 50 for a newborn session; and, yet, another lesson…) so even with such slight movement, I am likely to lose my focus.
Most likely there are other issues addressed in your manual, but this is the one that challenges me the most often.
Your challenge for the week is to practice with the different focus points your camera allows and really nail your focus. If you have a poorly focused picture, there’s not much you can do about it other than hit the ‘delete’ button.
Next week I’ll have a continuation on focus because this isn’t all there is to it.
If you’re a member of ilovephotography.com, do a search for ‘How to Nail Your Focus,’ and you can get a sneak peek of where I’m heading next week.














