Effective focal lengthcalculator

Enter the focal length (mm) and the crop factor into the Calculator. The calculator will evaluate the Effective Focal Length.

Effective focal lengthreddit

The Effective Focal Length (EFL) impacts the composition by altering the angle of view and magnification of the scene captured. It essentially determines how ‘zoomed in’ your photos will appear. Understanding EFL helps photographers choose the right lens to achieve the desired composition and perspective.

Calculating the Effective Focal Length before a photo shoot is important for planning and visualizing the shots. It helps photographers select the appropriate lens to achieve the desired field of view or to match a particular composition style, ensuring that the final images meet their creative vision.

Yes, the Effective Focal Length can be calculated for any camera and lens combination as long as you know the actual focal length of the lens and the crop factor of the camera’s sensor. This calculation helps in understanding how a lens will perform on different camera bodies.

The crop factor is a crucial concept in photography that relates to the size of a camera’s image sensor compared to a full-frame sensor (35mm film equivalent). It affects the field of view and apparent magnification of lenses used on the camera. A higher crop factor means a narrower field of view and greater magnification for a given focal length.