Tag Archives : sigma 17-50 mm f2.8 ex dc os hsm

Testing The OS Of The Sigma 17-50mm F2.8 EX DC OS HSM

Though this wasn’t the sole reason for me to purchase the Sigma 17-50 F2.8 EX DC OS HSM a week ago I had to give the OS a try.

One of the results is the image below, where I could disobey the rule of thumb of the minimum shutter speed. In this case I wouldn’t have chosen a shutter speed lower than 1/50 of a second. The reason for this is obvious as the rule of thumb says: if you shoot handheld the maximum focal length of your lens should be the minimum shutter speed that you choose.

In this case this would have meant that I would not have been able to get this smooth water effect.

Have a look at the image, then read the specifications below and be surprised.