Soft Pictures - The Five Main Reasons to Ruin Your Photos
Photoshop will not provide a miracle cure, it'll not salvage an image that is not sharp.
Over-sharpening becomes too apparent when the picture is printed, as the structure of the pixels is ruined.
Only good technique will do.
These are the five main reasons for that.
- Hand-holding the camera.
- The camera is resting on a light tripod.
- The subject is in motion and the shutter speed is not fast enough to freeze it.
- The larger the camera aperture, the less is the margin for error, especially is that so when using a long focus lens.
- Any vibration caused either by the photographer touching the camera to press the shutter button or by the mirror mechanism flipping upwards.
For example, if you're taking a photograph using a 200mm lens, your shutter speed should be at least 1/400 of a second.
In the field the Tripod is the photographer's best friend.
I see more and more photographers leaving the tripod at home, this is a mistake.
A good sturdy tripod will not vibrate with the wind or when pressing the shutter button.
If you want sharp pictures get a good tripod and don't leave it behind.
With the availability of Image Stabilized (IS), hand-holding the camera is sometimes acceptable because you can gain about two stops.
For instance, without such a system the camera meter may suggest a shutter speed of 1/30 of a second at f/8 for a particular subject.
With an (IS) system, it's as if the camera isshooting that scene with a 1/125 of a second-two is equivalent to two stops faster.
The subject is in motion and the shutter speed is not fast enough to freeze it.
If the subject is moving across your line of view, learning to pan the camera may solve this problem.
Panning is a technique describing the horizontal movement of the camera as it follows the moving subject.
There are times the photographer may wish a small portion of the subject to be sharp but other parts blurred.
So, the best shutter speed in any given situation is the shutter speed that accomplishes your purpose.
The larger the camera aperture, the less is the margin for error.
The depth of field can be just a few centimetres or even millimetres either way from the point of focus, depending on the distance from camera to subject and the type of lens used.
The depth of field is the area that's sharp.
Any vibration caused either by the photographer touching the camera to press the shutter button or by the mirror mechanism flipping upwards.
The mirror inside the camera is located just behind the lens and in front of the shutter, it's hinged at the top.
When the shutter is triggered the mirror swings upward to allow the shutter to open and close, so that the image is recorded on film or digital sensor.
The mirror then returns to its original position.
So, assuming your camera has the facility to lock the mirror, you'll need to use it in conjunction with the camera's self-timer or remote release cable.
If you're using a long focus lens and the exposure is long, then there's a greater need to lockup the mirror-in wildlife photography this technique is more limited for obvious reasons.
If you're photographing wildlife from a vehicle, you may be able to use a beanbag-a beanbag as the name implies, is a bag with beans.
It serves as a camera support for locations where a tripod is impractical to use.