Camera what does mm mean

As you can see, this Sigma lens has a 67mm diameter, therefore if you are looking for filters or a new lens hood, you would need to make sure you are purchasing ones that fit a 67mm diameter lens. This means it is the second generation of that particular lens. Popular lenses are often improved with a newer version and updated features so they can be sold again to photographers who want to upgrade.

These letters tell you what type of Autofocus motor is in your lens. They are the same thing, but each manufacturer uses different terminology. Not all lenses come equipped with this technology, but you will know if your lens does if you see the abbreviations "IS" or "VR" near the glass on the lens, or you see "Image Stabilization" or "Vibration Reduction" on the body of the lens.

The number, letters and symbols described above are the most common, but there are plenty of other less common abbreviations used by different lens manufacturers.

In general, the letters on the lens are simply used to describe specific features, such as the type of technology the lens uses, the type of camera to which the lens can be mounted, or the grade of the lens. If you are unsure of what any of those other abbreviations mean, a quick Google search should tell you exactly what you have. Do you have any questions or comments about Understanding Your Lens? Leave us a comment below - we would LOVE to hear from you!

She also designs actions and textures for Photoshop. When she is not shooting or writing, she enjoys spending time with her husband, and their two cats, Elphie and Fat Cat.

But beware, the smaller the number, the larger the aperture will be. The more the diaphragm is open, the more light can penetrate! So you know what you have to do if you want your photos to be brighter! There are two types of lenses: the fixed focal length lens and the zoom lens. Fixed focal length lenses have a constant focal length and zooms have varying focal lengths. The advantage of the zoom is its versatility.

It is perfect when you are shooting different types of subjects such as landscapes and portraits, and you want to use a single lens for both situations. The main advantages of fixed focal length lenses are size and weight as well as the maximum aperture or aperture f-number. Fixed focal length lenses tend to be more compact and lighter than zooms.

This is an advantage when shooting in low light conditions, as it increases the opportunities for handheld photography without enduring the inconvenience of shaking or blurring caused by long exposures. Photographing using fixed focal length lenses with large apertures also means that you can achieve shallow depth of field, useful for portraits when you want a softer or blurry background also known as bokeh.

These terms refer to the focal length of your lens. So, with a short focal length wide angle , you can fit almost everything in front of you into the frame. With a long focal length telephoto you can only bring in a small part of the scene in front of you. Long focal lengths are used when photographing a distant subject or a small subject without having to get too close. If there is only one number 50mm, for example , it means that the lens is a fixed focal length.

You have a single focal length, so you have to move around to compose your photo. You must log in or register to reply here. Various daytime and nighttime shots. What flash should I get? Most reactions Similar threads B. What does that f-number mean in camera specs?

Replies 2 Views 25K. May 26, JIP. Can someone help me better understand zoom and lens "mm", etc? Replies 3 Views 1K. Apr 12, snapsnap What does this mean? Replies 3 Views May 29, ksmattfish. Wtf are these mm's?

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