Benefit of this firmware update The latest firmware update improves the AF algorithm of 150-600mm F5-6.3 DG OS HSM lenses and further enhances AF speed by optimizing HSM (Hyper Sonic Motor) drive control.Depending on shooting conditions, it is expected to increase autofocus speed by approximately 20%, to a maximum of 50%, during normal shooting as well as when using “Speed Priority” set through SIGMA Optimization Pro.For customers who do not own a SIGMA USB DOCK, please contact Sigma Imaging (UK) Ltd for details about updating the firmware free of charge.SIGMA Optimization Pro Download page We appreciate your continued support for our company and products. My lens has 1.02 and sigma optimization pro is saying it has the most recent firmware but I haven't updated the lens in a while. For me it appears that the Canon version is cheaper at 99 and the Nikon version is at 99 from the plug-in.I plan on shooting motorsports and the focus speed is critical for that obviously. I will have to do more studying of sample [email protected] robspeed750I knew exactly what you said.Having nice sharpness at the full 600mm just makes it a no brainer (assuming it pans out--I await news from actual owners! In reality there is little or no difference between the two. Before I bought the Tamron I read every review I could find. My Sigma, the 17-70 C is a good lens but it doesn't support Direct Manual Focusing (manual focus fine tuning after initial AF) while my Tamrons do.
Heading to Chester Nova Scotia in the morning for a shoot.Lens manufacturer Sigma has announced new firmware for its 150-600mm F5-6.3 DG OS HSM | Sports and Contemporary lenses, saying that it makes the autofocusing system up to 50% faster.The firmware applies to lenses fitted for Canon EOS and Nikon F cameras, and can be installed via the company’s USB dock and the Optimization Pro software program.So, in your opinion they should just have left it as it is and not continued developing the firmware? Sigma offers new firmware that may have required thousands of man-hours to develop, tune and test, to get even more out of their very good zoom, and all you can do is bitch and moan. In the real world, when we get a free update to an already good product, we get happy, NOT angry.But you, you somehow feel entitled to pour crap over everyone and everything, just for the sake of it.