Help: new sigma lens issues with auto-focus
May 18, 2018 23:14:49 #
So I received an sigma 18-125mm f3.8-5.6 DC HSM lens today. The kit lens has no issue with focusing however the sigma lens will not focus using the LCD screen instead of the eye viewer (forgive me if I do not use the right terminology, I am new to DSLRs and trying to learn. So i will not be offended if you correct me). I was wondering if this is a defective lens or am I not using the right setting etc. I am using a pentax K-s1 and the sigma is for a pentax. the focus will go in and out of focus and finally settle out of focus. obviously, at this point i can not take a picture while using the lcd screen. However when using the eye view, it will focus in just fine. any idea?
May 19, 2018 04:35:00 #
jkfrankum wrote:
So I received an sigma 18-125mm f3.8-5.6 DC HSM le... (show quote)
JK, a kit lens is a lens that is bundled with a camera that is low cost, the body made of plastic and quite low cost. The Sigma is not low cost at $400 - it's a little better than a kit lens.
As has been the case with many Sigma lenses, live-view auto focus often doesn't work. Sometimes newer lenses can be reprogrammed (firmware update performed by Sigma) to work with cameras in live view. I have two Sigma lenses that can't focus and can't be updated.
May 19, 2018 06:59:24 #
May 19, 2018 08:31:18 #
ToBoldlyGo
Loc: London U.K.
Gene51 wrote:
JK, a kit lens is a lens that is bundled with a camera that is low cost, the body made of plastic and quite low cost. The Sigma is not low cost at $400 - it's a little better than a kit lens.
As has been the case with many Sigma lenses, live-view auto focus often doesn't work. Sometimes newer lenses can be reprogrammed (firmware update performed by Sigma) to work with cameras in live view. I have two Sigma lenses that can't focus and can't be updated.
As has been the case with many Sigma lenses, live-view auto focus often doesn't work. Sometimes newer lenses can be reprogrammed (firmware update performed by Sigma) to work with cameras in live view. I have two Sigma lenses that can't focus and can't be updated.
The OP didn't refer to the Sigma as a kit lens.
May 19, 2018 12:20:04 #
ToBoldlyGo wrote:
The OP didn't refer to the Sigma as a kit lens.
Nor did anyone else...
May 19, 2018 12:57:12 #
ToBoldlyGo wrote:
The OP didn't refer to the Sigma as a kit lens.
I should not post anything before my second cup of coffee. . .
You're right.
May 19, 2018 14:13:19 #
May 19, 2018 14:14:01 #
ToBoldlyGo
Loc: London U.K.
Gene51 wrote:
I should not post anything before my second cup of coffee. . .
You're right.
You're right.
Don't worry. I had to double check the post after reading yours in case I was the one in the wrong.
May 19, 2018 14:33:34 #
jkfrankum wrote:
So I received an sigma 18-125mm f3.8-5.6 DC HSM le... (show quote)
The Pentax-DA f/3.5-5.6 18-135mm ED AL DC (IF) WR is a really good lens, and costs "only" $400. It was the first lens I purchased after getting my K-30, and the lens normally on it. Get it instead!
May 19, 2018 18:53:35 #
ToBoldlyGo wrote:
Er, yes they did. See response above.
I read what was written and made no inferences, but took it at face value.
Silly me.
May 20, 2018 00:47:08 #
ToBoldlyGo
Loc: London U.K.
DaveO wrote:
I read what was written and made no inferences, but took it at face value.
Silly me.
Silly me.
I have been much sillier on many, many occasions. 😜
Jul 11, 2019 06:49:16 #
HeyYou
Loc: SE Michigan
rehess wrote:
The Pentax-DA f/3.5-5.6 18-135mm ED AL DC (IF) WR is a really good lens, and costs "only" $400. It was the first lens I purchased after getting my K-30, and the lens normally on it. Get it instead!
Listen to the wise REHESS and replace your Sigma with the
Pentax 18-135mm. It is truly an excellent lens. Superb build and WR (weather resistant - you don’t want to know the rain and snow storms mine has weathered (pun intended). Compact. Excellent optics. The same price range as what you purchased.
Like REHESS, of my 10 or more Pentax lenses the 18-135mm sits on my camera as my default walkabout.
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