DPReview.com is closing April 10th - Find out more

Does your 20-50mm lens has noisy AF ?

Started Jan 5, 2013 | Discussions thread
ForumParentFirstPrevious
Flat view
645D Regular Member • Posts: 326
Does your 20-50mm lens has noisy AF ?

Since the 20-50mm lens is highly rated in the forum, I purchased it today.  But after testing it on my NX200, I found it behave differently from the kit 18-55mm lens.  The 20-50mm lens rotates when focus, and it has the noisy AF similar to non-USM lenses from Canon.

Also I just found out the NX200 will keep AF operation when you move the view in S-AF mode, even without pressing the shutter button.  Before I thought it should work like a DSLR: when I am not pressing the shutter button, AF should not activate.  With the 20-50mm, it hunts back and forth once every few seconds as long as the power is on, very annoying.

Did I get a lemon?

-- hide signature --

Muzi

 645D's gear list:645D's gear list
Canon EOS 60D Nikon D5100 Samsung NX200 Panasonic Lumix DMC-GX1 Nikon D7100 +8 more
Samsung NX200
If you believe there are incorrect tags, please send us this post using our feedback form.
ForumParentFirstPrevious
Flat view
ForumParentFirstPrevious
Keyboard shortcuts:
FForum PPrevious NNext WNext unread UUpvote SSubscribe RReply QQuote BBookmark MMy threads
Color scheme? Blue / Yellow