Travel, Landscape, Fashion Photography

 

As a professional photographer and one of the Sigma Pros, a lot of people write to me asking all sorts of questions about lenses and cameras and well just about everything imaginable about photography. One of the common questions is about lenses for Full Frame and Cropped Sensor cameras. A full framed lens will work on either camera while the cropped sensor lens will only work on a cropped camera.

With the Sigma lenses there are 2 different designations in the name, which specify the camera they are to be used with. DC, which is only for cropped sensor cameras, or DG which are lenses for full frame or cropped sensor cameras.

Here are two lenses, do you know which one is only for cropped sensor cameras?

Sigma 24-70mm f/2.8 IF EX DG HSM

Sigma 17-70mm f/2.8-4 DC Macro OS HSM

 

So what does everything else mean?

IF stands for internal focus – the front of the lens doesn’t rotate when focusing, this is a good feature if you are using a polarizing filter. It also allows for the lens to focus faster.

EX stands for the professional top of the line lenses – optically and mechanically.

HSM stands for Hyper Sonic Motor. It is a new type of motor used for auto focus in some of Sigma’s newer lenses.

OS stands for Optical Stabilization which helps to keep the camera steady when handholding with a longer shutter speed.

 

This entry was posted on Thursday, January 24th, 2013 at 11:04 am and is filed under Equipment, Photography, Tips and Techniques, Tutorials and Articles. You can follow any responses to this entry through the RSS 2.0 feed. Both comments and pings are currently closed.