Real Estate Photography Lens Distance Guide
A bedroom is 3.5 metres wide, and you need to show all of it from a corner without making it look bigger than it is. Real estate photography is one of the few genres where the room, not your taste, mostly picks the lens.
Why the room picks the lens
In most genres you choose the look, then position yourself. Here the room is fixed and you are usually stuck in a corner or against a wall, so the lens is whatever frames the room from there. Standing in a corner and wanting to see wall to wall, the two walls beside you form a 90 degree angle, so you need a horizontal field of view of about 90 degrees. On full frame, here is what each lens covers:
| Focal length | Horizontal field of view | Width covered at 10 m |
|---|---|---|
| 14 mm | 104 degrees | 25.7 m |
| 16 mm | 97 degrees | 22.5 m |
| 18 mm | 90 degrees | 20 m |
| 20 mm | 84 degrees | 18 m |
| 24 mm | 74 degrees | 15 m |
| 35 mm | 54 degrees | 10.3 m |
So about 18 mm shows a full corner wall to wall, 16 mm gives margin, and 24 mm is for larger rooms where you do not need both side walls to the corner.
Focal length by room
| Room | Typical size | Corner-to-corner distance | Lens (full frame) |
|---|---|---|---|
| Small bedroom | 3 x 3 m | 4.2 m | 16 to 20 mm |
| Standard bedroom | 3.5 x 4 m | 5.3 m | 17 to 20 mm |
| Living room | 5 x 6 m | 7.8 m | 16 to 24 mm |
| Open plan kitchen and living | 7 x 8 m | 10.6 m | 16 to 24 mm |
| Bathroom | 2 x 2.5 m | 3.2 m | 14 to 16 mm |
| Hallway | 1.2 x 6 m | Long and narrow | 14 to 16 mm |
16 to 24 mm covers nearly everything, which is why a 16-35 mm zoom is the standard real estate lens, with a 14 mm or 16 mm prime for the tightest rooms.
The stretch problem
Very wide lenses stretch things near the edges, because they project the scene onto a flat sensor. A round object at the side of the frame becomes an oval by a factor of one over the cosine of its angle from the axis. On full frame that is about 1.5 times at the side edge and 1.7 times at the corner for a 16 mm lens, 1.35 and 1.5 for a 20 mm, and 1.25 and 1.35 for a 24 mm. So a bed in the corner of a 16 mm frame looks stretched by half again, however far back you stand. This is one of the most common complaints from agents and buyers. The post on lens compression and perspective shows the effect for other lenses.
Software lens profiles straighten barrel distortion, the bowing of straight lines, but they do not remove this stretching of objects. The fixes are practical: keep beds and tables away from the edges and corners of the frame when staging, and if the room allows, use a slightly longer lens from further back.
Keep the camera level
Tilt a wide lens up or down and walls lean inward, which reads as unprofessional even to viewers who could not say why. Use the electronic level on every frame, with the camera at about waist to chest height, roughly 1.1 to 1.4 m. A few degrees off level shows at 16 mm. If you need more ceiling or floor than a level frame gives, shoot two frames and blend them, rather than tilting one. The architecture post explains the geometry.
Exteriors
Outdoors you have more room, so you can use a moderate wide angle and avoid the extremes. At 24 mm the width covered is about 1.5 times the distance, so a house front 12 m wide needs at least 8 m, and about 9 m gives some margin, and a 35 mm covers about the same as the distance, so it needs 12 m or more. A small terrace or townhouse front is typically shot from 8 to 12 m with 24 to 35 mm, a detached house from 15 to 25 m, an apartment building from 20 to 40 m with 24 to 50 mm, and a large estate from 30 to 60 m with 35 to 70 mm. When the space is tight, cross the road, or use a drone for a wider elevated view, as in the post on estimating a drone's altitude, rather than using an extreme wide angle at close range.
Sensor size
Real estate lives at the wide end, so the sensor decides which lens you need for the same view:
| Sensor | Equivalent of 16 mm | Equivalent of 20 mm | Equivalent of 24 mm |
|---|---|---|---|
| Full frame | 16 mm | 20 mm | 24 mm |
| APS-C (1.5x) | about 10.7 mm | about 13 mm | 16 mm |
| Micro Four Thirds (2x) | 8 mm | 10 mm | 12 mm |
An APS-C camera with a 10-18 mm or 10-24 mm zoom covers the same range as a full-frame 16-35 mm, with a smaller and cheaper kit, so crop sensors are a practical choice here.
Very small rooms
When 14 mm cannot fit a room, consider a two-shot stitch rather than an even wider lens. Some photographers use a 10.5 to 12 mm fisheye and correct it afterward, which captures very tight spaces at the cost of some area at the edges and a more demanding workflow. It is a specialist technique for the hardest rooms.
Know the room size before you arrive, bring a 16-35 mm as your main lens, keep the camera level, and stage and position to avoid the worst corner stretching. To check how far away you were in a shot you already have, use the calculator.
Related reading: Architecture Photography: Distance, Perspective, and Distortion, Wedding Photography: Distances for Every Moment, Subject Distance Calculator.