Do EF-S lenses have a crop factor?
Focal Length Equivalent (Crop Factor) Throughout this article we frequently reference focal length equivalent, or crop factor. Canon APS-C cameras have a 1.6x crop factor, meaning that a 50mm EF-S lens will behave like an 80mm lens would on a 35mm camera.
How do you calculate the crop factor of a lens?
The math to derive the crop factor is quite simple. Knowing the physical size of the sensor, you first calculate the diagonal using Pythagorean Theorem (a² + b² = c²), then divide the number by the diagonal of the crop sensor.
What is 12mm on a crop sensor?
The Rokinon 12mm f/2.0 is an APS-C lens, meaning it was designed to provide a 35mm (full frame) equivalent focal length of 18mm. Although specifically designed for crop sensors, this lens can be used on full frame sensor and micro 4/3 cameras, but with a different effective focal length.
What is 35mm equivalent in APS-C?
Simply multiply your aperture, just as you would your focal length, by your crop factor to find the equivalent full frame aperture. So, a 35mm f/1.8 on APS-C is roughly equivalent to a 50mm f/2.8 on a full-frame camera.
What is a 18mm lens on a crop sensor?
18mm x 1.6 = 28.8mm. Your 18mm lens will produce a field of view on your crop sensor camera similar to what a 28.8mm lens would on a full frame one. So if you’re looking for a very wide scene, then you might want to pick out a lens that is wider than 18mm to compensate for your crop.
What is 22mm on crop sensor?
the real focal length is 22mm. it’s a 22mm lens. however if you look at the Field of view from a 35mm full frame camera equivalent, it gives you the same field of view as a 35mm lens.
Is EF or EF-S better?
So if you’re a landscape or architectural shooter, or you just want an ultra-wide angle perspective, it’s better to use a full-frame camera with EF lenses. Plus, EF lenses are much more expensive than EF-S lenses. If you’re on a budget, you’ll appreciate the money you can save by purchasing EF lenses instead.
Does EF-S have EF adapter?
Short answer: No. Long answer: Because EF-S lenses protrude deeper into the mirror box than EF lenses, and yet have the exact same distance between the throat and the focal plane, such an adapter must include corrective optics to adjust the back focal distance so that the lens focuses properly at infinity.
WHAT IS lens crop factor?
Crop factor is the ratio of a camera sensor’s size to a 35mm film frame. Use it to calculate effective focal lengths and compare lenses between DSLRs. Crop factor is a term that describes the difference between your camera’s sensor size and a traditional 35mm film frame.
What does 1.5 crop factor mean?
This is why you might also hear crop factor referred to as the “focal length multiplier” (or “FLM”). For example, a 50mm lens on a 1.5 crop factor camera has an effective focal length of 75mm, because 50 x 1.5 = 75. If you fitted a 75mm lens to a 35mm camera, you’d get a photo with the same field of view.