New Sigma 18-300 F3.5-6.3 DC Macro Lens is slow to autofocus

ramonsito · 12-20-2016, 10:20 PM

My new Sigma 18-300 lens Macro Lens seems to not focus when the camera (focus) beeps and is really slow on auto focus.
Anyone having these issues?
Should I contact Adorama or Sigma about this?

Ramonsito

Adam · 12-21-2016, 02:47 AM

What conditions are you testing the lens in, and on what camera? Remember that the aperture is fairly slow, so in low light, especially on cameras with SAFOX IX or older, you may get slow performance.

If the motor itself is acting up, you can exchange the lens or get it serviced, though.

12-20-2016, 10:20 PM	#1
ramonsito New Member Join Date: May 2010 Location: Vashon Island, WA Photos: Gallery Posts: 23	New Sigma 18-300 F3.5-6.3 DC Macro Lens is slow to autofocus My new Sigma 18-300 lens Macro Lens seems to not focus when the camera (focus) beeps and is really slow on auto focus. Anyone having these issues? Should I contact Adorama or Sigma about this? Ramonsito

12-21-2016, 02:47 AM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	What conditions are you testing the lens in, and on what camera? Remember that the aperture is fairly slow, so in low light, especially on cameras with SAFOX IX or older, you may get slow performance. If the motor itself is acting up, you can exchange the lens or get it serviced, though. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
For Sale - Sold: Sigma 18-250mm f3.5-6.3 DC MACRO HSM for Pentax	borysr	Sold Items	2	06-02-2016 07:27 PM
For Sale - Sold: Sigma DC 18-250mm f3.5-6.3 Macro HSM	bradsarno	Sold Items	8	10-29-2015 03:26 PM
For Sale - Sold: Sigma 18-250mm f3.5-6.3 DC MACRO HSM for Pentax - Price drop to $239	Spodeworld	Sold Items	16	06-22-2015 05:55 AM
For Sale - Sold: Sigma 18-250mm F3.5-6.3 DC Macro HSM Zoom Lens -- $219!	Fat Albert	Sold Items	3	06-09-2015 06:58 AM