When should I use centre composition?

Centre composition works well for symmetrical subjects (architecture, reflections), formal portraits, macro photography, and minimalist compositions. It creates a static, stable and powerful feel. Symmetrical framing combined with leading lines towards centre can be very effective.

What are diagonal axes used for?

Diagonal lines create dynamic energy in a composition. The two diagonals of a frame (corner to corner) can be used to align elements along strong dynamic lines. Placing elements along or parallel to diagonals creates more movement than horizontal or vertical placement.

How do I find the centre in my viewfinder?

Most cameras display a centre focus point and often have a grid overlay option. Enable the grid display in your camera settings. For precise architectural work, many cameras offer an electronic level indicator. In post-processing, most editors can overlay centre guides.

Can I combine symmetry with other composition rules?

Yes. Many strong compositions use partial symmetry — symmetrical on one axis but using rule of thirds on the other. For example, a reflection image might be symmetrical vertically (top/bottom) but place the key element on a third line horizontally. This creates balance with interest.

PhotoCalcs

Symmetry Calculator — Centre Lines & Symmetry Axes

Find the centre lines, diagonal axes and symmetry points for your image frame.

Image Width

Width in pixels

Image Height

Height in pixels

How We Calculate This

This calculator finds the symmetry axes and centre point of your frame:

Centre Point

Centre X = width / 2, Centre Y = height / 2

Symmetry Axes

Vertical axis runs through centre X. Horizontal axis runs through centre Y. Two diagonal axes run corner to corner, crossing at the centre point.

Diagonal Angle

Angle = arctan(height / width)

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates based on standard optical and photographic formulas. Results may vary with specific equipment.