Difference between the Sigma 18-50's?

Finn · 01-10-2008, 02:58 PM

Forgive me if these lenses have been discussed ad nauseum, but I couldn't find the answer to my question.

I reluctantly let go of the 16-45 because it was just too slow for most of the situations I find myself in. I can't quite justify $800 or so for the 16-50, so that leaves the Sigma 18-50 f/2.8 as a more affordable alternative. The thing is, there are two versions of this lens, the later adding aspherical elements low dispersion glass, and having greater close-focus ability. There is also a $130 difference between them:

Amazon.com: Sigma 18-50mm F/2.8 EX DC Lens for Pentax Digital SLR Cameras: Electronics
Amazon.com: Sigma 18-50mm f/2.8 EX DC SLD ELD Aspherical Macro Lens for Pentax and Samsung Digital SLR Cameras: Camera & Photo

Has anyone used both lenses? Is the newer iteration really worth the extra $130?

Since I still shoot film, I am also tempted by the 24-70 f/2.8 instead of an 18-50, but I'm worried that it's just a monster. Anyone care to lend their insight?

**igowerf** · 01-10-2008, 04:08 PM

From what I've read, the newer macro version is the one to get. Here's an older thread about the two lenses. Apparently, the non-macro version of the lens has a yellowish tint which is fixed in the macro version.

EDIT: By the way, I dropped off your 20mm in the mail today.

Finn · 01-10-2008, 05:38 PM

Originally posted by igowerf

From what I've read, the newer macro version is the one to get. Here's an older thread about the two lenses. Apparently, the non-macro version of the lens has a yellowish tint which is fixed in the macro version.

EDIT: By the way, I dropped off your 20mm in the mail today.

Man, how is it that I am such a moron with my search terms. I totally missed that one.

Can't wait for the lens -- I've been searching for a good film-compatible replacement for the DA21 for a long time...

**igowerf** · 01-10-2008, 07:01 PM

The search on these forums is a bit hard to use, especially with the character limit prevent us from searching for something like "50mm".

Often, I just use Google to search the forums: "pentaxforums 18-50mm sigma"

SpecialK · 01-10-2008, 07:10 PM

Quote:

Apparently, the non-macro version of the lens has a yellowish tint which is fixed in the macro version.

I've only seen a few posts (in one thread) about a yellow tint. Nothing mentioned from everyone else, though. Mine's fine. Very popular.

When Photodo reviewed the older version, it was the sharpest (at 24mm) they had ever tested. They did not mention a yellow tint.

**igowerf** · 01-10-2008, 07:58 PM

Originally posted by SpecialK

I've only seen a few posts (in one thread) about a yellow tint. Nothing mentioned from everyone else, though. Mine's fine. Very popular.

When Photodo reviewed the older version, it was the sharpest (at 24mm) they had ever tested. They did not mention a yellow tint.

Ah. Good to know. The 18-50mm non-macro is getting pretty cheap now. I've seen them on KEH and eBay for $300 or less.

marcdsgn · 01-10-2008, 08:20 PM

Originally posted by igowerf

Ah. Good to know. The 18-50mm non-macro is getting pretty cheap now. I've seen them on KEH and eBay for $300 or less.

I have the urge to gloat here: I bid on a six-month old MACRO version late last year via Ebay for under $60 AU .... and won it!

I almost felt bad for the seller. But I got over that.

Holding my breath and hoping there isn't some massive fault yet to be found, but it seems to be in perfect working order.

I'm interested by the older thread's comment about the yellow tint. Will watch out for that. Hopefully it's something that can be easily corrected via software.

01-10-2008, 02:58 PM	#1
Finn Veteran Member Join Date: Feb 2007 Location: Phoenix Photos: Gallery Posts: 1,056	Difference between the Sigma 18-50's? Forgive me if these lenses have been discussed ad nauseum, but I couldn't find the answer to my question. I reluctantly let go of the 16-45 because it was just too slow for most of the situations I find myself in. I can't quite justify $800 or so for the 16-50, so that leaves the Sigma 18-50 f/2.8 as a more affordable alternative. The thing is, there are two versions of this lens, the later adding aspherical elements low dispersion glass, and having greater close-focus ability. There is also a $130 difference between them: Amazon.com: Sigma 18-50mm F/2.8 EX DC Lens for Pentax Digital SLR Cameras: Electronics Amazon.com: Sigma 18-50mm f/2.8 EX DC SLD ELD Aspherical Macro Lens for Pentax and Samsung Digital SLR Cameras: Camera & Photo Has anyone used both lenses? Is the newer iteration really worth the extra $130? Since I still shoot film, I am also tempted by the 24-70 f/2.8 instead of an 18-50, but I'm worried that it's just a monster. Anyone care to lend their insight?

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Difference between Pentax fish eye @ 10mm and Sigma @ 10mm?	Big G	Pentax SLR Lens Discussion	15	10-07-2010 12:12 PM
Is IQ difference between Sigma 17-70 and DA Ltds noticeable?	JesseDavis	Pentax SLR Lens Discussion	23	02-27-2010 04:42 PM
Difference between sigma 70-200 ex apo and apo ex dg	mpg	Pentax SLR Lens Discussion	3	06-28-2009 07:28 AM
And the Difference is ?	Jesus	Photographic Technique	15	09-26-2007 02:13 PM
What's the difference between these lenses? (Sigma)	Tom M	Pentax SLR Lens Discussion	6	09-17-2007 05:31 PM

01-10-2008, 04:08 PM	#2
igowerf Site Supporter Join Date: Mar 2007 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 486	From what I've read, the newer macro version is the one to get. Here's an older thread about the two lenses. Apparently, the non-macro version of the lens has a yellowish tint which is fixed in the macro version. EDIT: By the way, I dropped off your 20mm in the mail today.

01-10-2008, 05:38 PM	#3
Finn Veteran Member Join Date: Feb 2007 Location: Phoenix Photos: Gallery Posts: 1,056 Original Poster	Originally posted by igowerf From what I've read, the newer macro version is the one to get. Here's an older thread about the two lenses. Apparently, the non-macro version of the lens has a yellowish tint which is fixed in the macro version. EDIT: By the way, I dropped off your 20mm in the mail today. Man, how is it that I am such a moron with my search terms. I totally missed that one. Can't wait for the lens -- I've been searching for a good film-compatible replacement for the DA21 for a long time...

01-10-2008, 07:01 PM	#4
igowerf Site Supporter Join Date: Mar 2007 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 486	The search on these forums is a bit hard to use, especially with the character limit prevent us from searching for something like "50mm". Often, I just use Google to search the forums: "pentaxforums 18-50mm sigma"

01-10-2008, 07:10 PM	#5
SpecialK Pentaxian Join Date: Dec 2006 Location: So California Photos: Gallery Posts: 16,416	Quote: Apparently, the non-macro version of the lens has a yellowish tint which is fixed in the macro version. I've only seen a few posts (in one thread) about a yellow tint. Nothing mentioned from everyone else, though. Mine's fine. Very popular. When Photodo reviewed the older version, it was the sharpest (at 24mm) they had ever tested. They did not mention a yellow tint.

01-10-2008, 07:58 PM	#6
igowerf Site Supporter Join Date: Mar 2007 Location: Los Angeles, CA Photos: Gallery \| Albums Posts: 486	Originally posted by SpecialK I've only seen a few posts (in one thread) about a yellow tint. Nothing mentioned from everyone else, though. Mine's fine. Very popular. When Photodo reviewed the older version, it was the sharpest (at 24mm) they had ever tested. They did not mention a yellow tint. Ah. Good to know. The 18-50mm non-macro is getting pretty cheap now. I've seen them on KEH and eBay for $300 or less.

01-10-2008, 08:20 PM	#7
marcdsgn Senior Member Join Date: Dec 2007 Location: Queensland Photos: Gallery Posts: 265	Originally posted by igowerf Ah. Good to know. The 18-50mm non-macro is getting pretty cheap now. I've seen them on KEH and eBay for $300 or less. I have the urge to gloat here: I bid on a six-month old MACRO version late last year via Ebay for under $60 AU .... and won it! I almost felt bad for the seller. But I got over that. Holding my breath and hoping there isn't some massive fault yet to be found, but it seems to be in perfect working order. I'm interested by the older thread's comment about the yellow tint. Will watch out for that. Hopefully it's something that can be easily corrected via software.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search