Pick your sensor format and the field you need to see. Every cell links to the full working: required magnification, vertical and diagonal field, µm per pixel for the usual camera resolutions, and the POMEAS zoom or telecentric models that actually sit at that magnification.
| Sensor | 5 mm | 10 mm | 15 mm | 20 mm | 30 mm | 50 mm | 80 mm | 120 mm |
|---|---|---|---|---|---|---|---|---|
| 1/3″ 4.8 × 3.6 mm | 0.960X | 0.480X | 0.320X | 0.240X | 0.160X | 0.0960X | 0.0600X | 0.0400X |
| 1/2″ 6.4 × 4.8 mm | 1.280X | 0.640X | 0.427X | 0.320X | 0.213X | 0.128X | 0.0800X | 0.0533X |
| 2/3″ 8.8 × 6.6 mm | 1.760X | 0.880X | 0.587X | 0.440X | 0.293X | 0.176X | 0.110X | 0.0733X |
| 1″ 12.8 × 9.6 mm | 2.560X | 1.280X | 0.853X | 0.640X | 0.427X | 0.256X | 0.160X | 0.107X |
| 1.1″ 14.2 × 10.4 mm | 2.840X | 1.420X | 0.947X | 0.710X | 0.473X | 0.284X | 0.177X | 0.118X |
| 4/3″ 17.6 × 13.2 mm | 3.520X | 1.760X | 1.173X | 0.880X | 0.587X | 0.352X | 0.220X | 0.147X |
Working with a line-scan camera instead of an area camera? The companion table converts belt speed and the resolution interval you need into the required line rate, the exposure ceiling and the lens magnification that keeps pixels square: line-scan timing table (speed × resolution → line rate).
This page is part of the POMEAS Technical Reference series. The companion document TR-001 — optical performance test methods covers how optical performance is actually measured and verified.
Magnification = sensor width / field width. Values are rounded to three decimals; open any cell for the vertical field, diagonal field and pixel resolution at your camera.
Divide the active width of your sensor by the width of the field you need. A 2/3″ sensor (8.8 mm) imaging a 20 mm field needs 8.8 / 20 = 0.44X. Use the horizontal axis consistently — mixing horizontal field with vertical sensor height is the most common mistake in lens maths.
No. Field of view scales with the sensor: the same 0.5X lens gives 17.6 mm wide on a 2/3″ sensor and 25.6 mm on a 1″ sensor. This is why lens datasheets quote magnification, not field.
Telecentric designs dominate below about 0.3X and stay competitive up to roughly 1X; continuous zoom platforms cover 0.28X–19.2X depending on the body. Each cell above lists the real models with published working distance and specs.
TR-001: 16 optical performance test methods, motorized zoom lens selection guide, how zoom lens FOV is calculated, real working-distance values by model, 4K zoom lens models and per-step resolution, 12.5X zoom lens models and mounts
