Camera Lens 50 mm, Object 2 m Away
A 50 mm camera lens focused on an object 2 m away forms an image approximately 51.3 mm behind the lens.
How to use this tool
- Enter focal length f, object distance dₒ and image distance dᵢ in the fields above.
- Results update instantly as you type — or click Calculate.
- Read your image distance dᵢ and the full breakdown beneath it.
Standard 50 mm lenses on full-frame cameras focus subjects at 2 m by forming an image just over 51 mm behind the optical centre.
Frequently asked questions
- What is the sign convention?
- Using the standard convention: distances are positive on the same side as the outgoing light (real image), negative on the same side as the incoming light (virtual image). Converging lenses have f > 0; diverging lenses f < 0.
- What happens when the object is at the focal point?
- The image distance becomes infinite (parallel outgoing rays) — no focused image forms.