This post will help you know when to use manual focus with your DSLR. That will help you get sharper subjects in your photos in 7 specific photography situations.
In most cases your autofocus camera will do a good job for you, but here are 7 times where you'll get better results with sharpness when you focus manually.
|1.||SHOOTING THROUGH FENCES AND WINDOWS|
|3.||WHEN IT'S DARK|
|4.||RANGE OF FOCUS|
When this situation occurs it becomes obvious as it happens. Have you ever been to the zoo, or a museum or perhaps in your car and you tried to photograph something through the glass or with an object between you and your subject like a fence?
Your DSLR will either focus on the close-up object or go into a focus searching mode.
If you recognize this ahead of time, you'll be able to handle the challenge! You won't miss your photo because the focus was wrong. It occurs when there is a fence or glass you have to shoot through at your subject.
Your camera focus will automatically be on the closest object to the lens. The fence or glass or object in the foreground will be sharp and your subject will be out of focus. Manually focusing on your subject will overcome this situation.
Your camera may struggle to find focus under two similar lighting conditions. This includes strong backlighting, like this backlit photo here, and can also occur under dim lighting conditions. Your camera may struggle to find the focus when there is very little light available. This is a good situation to switch over to manual focus.
Auto-focus lenses work great when your subject has strong lighting on the side facing your camera, but often fails when it's dark or your subject has very little contrast for the camera lens to analyze.
I took this shot this during a trip to Austria. It was extremely bright backlighting. My camera focusing mechanism was trying but couldn't find sharpness on the subjects shadowed body. I switched to manual focus and was able to this shot just in time before he decided to exit the building.
Night photography situations, such as pictures of fireworks or strong back lighting situations will cause your lens to continuously search for sharpness and will delay the shutter or won't allow the picture to be taken at all.
Give yourself little photography assignment, try this on your own and learn how your camera behaves. Look for some of these situations right now in your environment. Try taking a picture through a window. Place your subject with a large bright window behind them.
Try this with them wearing a dark solid shirt. The try it with a bright shirt or a shirt with stripes or a pattern. Your results will depend on how much fill light is present.
Look at this photo of this tree photographed at sunrise. The composition included the marsh grass in the foreground and the tree in the background. The camera automatically focused on the grass in the foreground.
If I had used manual focus, and focused on a distance about halfway between the marsh grass and the tree, I could have had both the foreground and background in sharp focus.
You may want to put emphasis on something within your photograph with selective focus. You can do so by having it sharply focused and other parts of the photo intentionally blurred.
The auto-focus system of your camera may not know which part of the photo you want to emphasize. Manual focus combined with a shallow depth of field will give you more control of your intended the center of interest in your image.
I used manual focus to shoot the flower image at the beginning of this article.
Most cameras have auto-focus capabilities when shooting macro photography and with SOME cameras auto-focus can do an adequate job. The challenges come into play when you are extremely close to your subject and your depth of field is so limited.
Focusing accuracy and precise control is better handled manually, particularly in lower light situations when a larger aperture is needed for a good exposure. Point and shoot cameras definitely will fall short if you are photographing a moving target like an insect.
Some high level DSLR cameras have fast focus tracking and are able to follow fast moving objects and keep them in focus. Some situations and many cameras won't perform this well. That's when you need to focus manually on a pre-selected spot where your subject is going to be at the exact instant you take your photo.
Auto-focusing is particularly difficult when the subject is moving rapidly toward or away from you. The point of sharp focus is changing very rapidly as opposed to a situation where the subject is traveling across your field of vision.
With street photography, you may want to photograph your subject without alerting them that they're being photographed. Raising the camera to your eye will blow your cover. You can manually focus where your subject will be ahead of time, wait for the right moment, and casually aim your camera from your hip and get the candid photo you want.
This is one that many people forget and it's a great way to get creative with your photography. You can take some visually interesting photos by purposefully blurring your subject with manual focusing. The photo below shows a unique result with everything in the image being blurred.
To get this type of shot you can use manual focus, a slow shutter speed and a moving camera to get artistic interpretations of various scenes. This was a flock of snow geese resting in the middle of a corn filed, during cold weather.
The most obvious reason is that you can shoot in any lighting conditions. Those dimly lit situations when your camera's autofocus struggles can cause you to miss a great shot. Secondly, using manual focus puts in control of exactly what is being emphasized within the scene in front of you.
In this close up photo of the coffee beans, I focused on one of the letters on the scoop handle to control the exact point of focus manually. Brush up a little on depth of field techniques to see how manual focus can be used to take your creativity to a whole new level.
It's a simple matter of locating the correct switch, usually on the lens barrel and changing it from AF to MF. Use the lens focusing ring on the lens barrel and turn it back and forth until you find the exact point you want to focus on in your composition.
Here's a video showing you how to adjust your DSLR to a manual focus setting:
Keep shooting. Keep learning. Keep improving.