Panorama Overlap Calculator

Frequently Asked Questions

How much should panorama frames overlap?

Typically 25–35% (use ~30%). More overlap eases stitching and lens-distortion blending; too little risks seams and parallax errors.

How many shots do I need?

Shots ≈ total coverage ÷ (horizontal FOV × (1 − overlap)), rounded up. The calculator derives FOV from focal length and sensor size.

Why does focal length change the count?

Longer lenses have a narrower field of view, so you need many more frames to cover the same scene (but get more resolution).

What reduces stitching errors?

Rotate around the lens's no-parallax point, lock exposure and white balance, shoot in portrait orientation for more vertical coverage, and keep consistent overlap.

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Estimates for informational purposes only.

Important Disclaimer: Estimates for informational purposes only.

This calculator provides estimates for informational purposes only. Results are based on assumptions and may not reflect actual outcomes. Consult qualified professionals in relevant fields before making important decisions based on these results.

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How This Calculator Works

The horizontal field of view of a rectilinear lens is FOV = 2 × arctan(sensor width ÷ (2 × focal length)). Stitching software needs frames to share image content, so each shot must overlap the previous one - typically 25–40%. The unique angle each new frame adds is FOV × (1 − overlap fraction). Dividing the total panorama coverage you want by that effective angle gives the number of shots; the degrees you rotate between frames keeps the chosen overlap consistent across the whole sweep.

Worked Example

A 35 mm lens on full−frame (36 mm wide) has FOV = 2 × arctan(36 ÷ 70) ≈ 54.4°. With 30% overlap each frame adds 54.4 × 0.70 ≈ 38° of fresh scene. For a 180° sweep that is roughly ⌈180 ÷ 38⌉ ≈ 5 shots, rotating about 36° between each. Shooting in portrait orientation narrows the per−frame FOV (you use the shorter sensor edge horizontally), so you need more frames but gain vertical coverage and resolution - the classic technique for tall scenes.

Real-World Use

Landscape and real−estate photographers use this to plan a shoot before touching a tripod: pick the lens, decide the sweep (a 180° vista or a full 360° for VR), and the calculator tells you how many frames and the rotation step to set on a panoramic head with click−stops. Knowing the shot count up front also tells you how much the scene can change - clouds, water, traffic - before stitching artifacts appear, and how much memory and processing the final stitch will demand.

Common Mistakes

Too little overlap. Below ~20% stitchers fail to find control points, especially in low−texture sky or water; 30–40% is the safe default for wide lenses with edge distortion.

Not rotating around the no−parallax point. Pivoting on the tripod screw instead of the lens entrance pupil causes near−far misalignment that no overlap can fix.

Changing exposure or focus mid−sweep. Lock manual exposure, white balance, and focus so frames blend seamlessly.

Ignoring lens distortion. Very wide lenses curve straight lines; add extra overlap and enable lens correction before stitching.

Limitations & Related Tools

This model assumes a flat rectilinear projection and a single−row horizontal panorama. Multi−row (spherical) panoramas need this many columns plus rows for vertical coverage, and fisheye lenses follow a different projection so the FOV formula here over− or under−estimates them. It also ignores the crop that final stitching and rectangular cropping remove from the edges - budget a few extra degrees of total coverage. Pair it with a field−of−view or crop−factor calculator when switching bodies, and a depth−of−field tool to keep the whole sweep acceptably sharp at one focus distance.

Panorama Overlap Calculator

Frequently Asked Questions

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