Equivalência Full-Frame
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The Full-Frame Equivalent Calculator assists photographers in understanding how a lens's focal length behaves on cameras with smaller sensors, such as APS-C or Micro Four Thirds. It calculates the 'equivalent focal length' by multiplying the actual focal length by the camera's crop factor. For example, a 50mm lens on a 1.5x crop sensor results in a 75mm equivalent on Full-Frame, altering the field of view.
This tool is useful for comparing lenses across different camera systems. The calculation considers only the sensor's crop factor (not resolution or optical quality). It's essential for composing shots, especially in portrait, landscape, or macro photography, where the field of view directly affects the outcome.
Note: Equivalent focal length doesn't change depth of field or lens aperture. The crop factor only modifies the field of view. Additionally, smaller-sensor cameras may exhibit differences in image quality in low-light conditions, even with equivalent focal lengths.
Frequently asked questions
What is crop factor?
It's the ratio between a Full-Frame sensor (36mm x 24mm) and the camera's sensor. Example: APS-C has a 1.5x or 1.6x crop factor.
How does equivalence affect field of view?
Multiplying focal length by crop factor narrows the field of view, simulating a longer lens on Full-Frame.
Can I compare lenses from different systems with this tool?
Yes, it standardizes focal lengths for comparison, but doesn't account for optical quality or low-light performance.
Why use this calculator when buying lenses?
It helps avoid composition surprises, especially when transitioning from Full-Frame to smaller sensors.