What are Canon extension tubes used for?
An extension tube is an accessory that increases the magnification of a lens simply by moving the optics further away from the camera.
What does a 25mm extension tube do?
An extension tube increases lens magnification by an amount equal to the extension distance divided by the lens focal length. For example, adding a 25 mm extension tube to a 50 mm lens will give a magnification gain of 0.5X.
Do extension tubes increase magnification?
The extension tube serves to increase the distance between the lens and the sensor. This allows the lens to focus closer and, therefore, increase magnification, so you can use almost any lens for close-up photography. As with a macro lens, the longer the focal length, the greater the working distance you can achieve.
Can extension tubes be used with zoom lenses?
Extension tubes can be used with long telephoto zoom lenses. This type of set-up tends to give photographers more latitude when photographing subjects that are a few feet away from them, for example bees or butterflies that are a few feet inside a bed of flowers rather than on the periphery.
Do extension tubes affect sharpness?
No optics in an extension tube! Unlike teleconverters, extension tubes have no optics in them at all. This means that in most circumstances they have very little effect on image quality.
Do extension tubes degrade image quality?
An extension tube, regardless of brand, does not degrade image quality since it has no lens. As the name suggests, it is just a tube with no glass in it.
Are camera extenders worth it?
While teleconverters give you decent image quality, they still cause the photos to lose some of it. However, they are still much better than cropping the image, and they preserve way more quality than cropping. This probably goes without saying, bit when you’re using a longer lens, there’s more camera shake.