Simon Maxwell, our man in London, has just released a brand new video tutorial on how sensor size affects the effective focal length of your lens.
This subject is a huge issue when you are getting started in interior photography in that the less expensive DSLRs that a beginner will want to purchase will have a telephoto effect on the focal length on your lens because the sensor size is smaller than a Full Frame sensor.
So if you are just getting into real estate photography you need to watch and understand Simon's tutorial. Cropped (small) sensors are why 18-55mm kit lenses that come on new low end DSLRs sound like a wide-angle lens, but are effectively 28.8-88mm lenses on Canon bodies and 27-82.5mm lenses on Nikon bodies.
Besides watching don't forget to click the like button on YouTube, and if you enjoy Simon's tutorials be sure to subscribe to his YouTube Channel.