Border Top
Technical Details

Photo Helper recommendations

To develop its recommendations, Photo Helper goes internally through these steps:

  1. It ensures the subject is in focus. It does this by calculating the aperture required for the subject to be within the depth of field range (or to ensure that the subject is beyond the hyper-focal distance).
  2. It avoids motion blur. By considering the movement in the scene, camera parameters, and distance to the main subject, it recommends a shutter speed fast enough to avoid motion blur.
  3. It avoids camera shake and graininess. After addressing the often needed trade-offs to maintain the required exposure, Photo Helper matches the resulting settings against commonly used rules-of-thumb to detect any potential problems.

At times, conditions are poor and it will be impossible to obtain a set of recommendations that accomplishes all of the above. In this case, Photo Helper will display its best recommendation and will highlight related warnings.

The sliders in the Fine Tune area can be used at any time to change the parameters and deviate from the suggestion - Photo Helper will monitor your changes and instantly display appropriate warnings.

Exposure values

In most cases, you will not have an Exposure Meter with you so the value entered in "Lighting" will have to be an approximation. This is why Photo Helper normally suggests using either "Aperture priority" or "Shutter priority" modes on your camera (vs. "Manual")- that way the camera can adjust slightly the recommended settings and achieve a good exposure for the photo.

Avoiding motion blur

A common rule-of-thumb to avoid motion blur is to use a shutter speed of 1/x; where x is the 35-mm equivalent of the lens size (i.e. a 100mm lens on a camera with a crop factor of 1.6 would require 1/160s shutter speed). However, this is also influenced by (a) movement in the scene; and (b) distance to the subject, as angular velocity will increase when the subject is near. Photo Helper considers these parameters when creating its recommendations.

Avoiding camera shake, using a tripod

Photo Helper will issue a "Shake" warning when the shutter speed falls below 1/60s, and a "Tripod" warning when it is slower than 1/4s. However, if the lens you are using has Image Stabilization (IS) capabilities, it might be able to produce adequate photos at slower speeds.

Border Bottom