Quick Tip: Effective Focal Length

which-lens-should-i-choose-for-my-dslr-cameraWith interchangeable-lens SLRs, the effective focal length of the lens depends on the size of the chip that is used in the camera. There are only a few SLRs with sensors that match the size of the 35mm film format. These are called full-frame sensors. These models do not magnify the effective focal length of a lens as cameras with smaller size sensors do. In most cases, the effective focal length is increased by 1.5x or 1.6x. This is good news if you mostly use telephoto lenses because it increases the pulling power. However, it is a disadvantage for anyone who prefers to work with wider focal lengths.


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Ms. R.

About Ms. R.

Danielle Rochford has been a certified teacher for over 15 years, practicing her craft with middle school students in British Columbia, Canada. She is also a self-taught landscape photographer and founder of D-Roc Photography and Design. She has spent the past five years teaching online in such areas as English, Math, and Photography. She hopes to continue sharing her expertise with others now on Udemy. Danielle encourages her students to be interactive and provides many opportunities for discussion and feedback. In her spare time, she loves to travel and enjoy the solitude of nature. You will often find her traveling through Jasper, AB on a photography adventure.

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