Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-06-2008, 10:51 AM   #1
Loyal Site Supporter




Join Date: Sep 2006
Location: Bronx NY
Photos: Gallery | Albums
Posts: 5,599
Sigma 135-400 APO and APO DG

Does anybody have either of these two? Does anybody know what the difference is between the APO and the APO DG versions? I'm assuming that the "DG" stands for some sort of "digitally optimized" something or other. But I'm more interested in the IQ of the lens. So if anybody has it I'd be interested in hearing what you can say about it.

NaCl(input is appreciated)H2O

02-06-2008, 12:24 PM   #2
Inactive Account




Join Date: Jun 2007
Location: Toronto, Ontario
Photos: Gallery
Posts: 429
I have the DG version and it's pretty good, for it's price (half the price of the Bigma). It's reasonably sharp at 400mm and I think it's the shortest (physical length) and lightest of Sigma's 400mm+ zoom lenses. I value the small size. Here is a link to some pictures I have on my flickr site taken with this lens.

Note, the K10D had some problems focusing on the red cardinal - I might have been able to get a sharper shot. And the "First Fall Colors" is out of focus 'cause the leaves were blowing in the wind (but I liked the photo none the less :-) ).

Flickr: siderean's photos tagged with sigma135400mmf4556dg
02-06-2008, 12:48 PM   #3
Pentaxian
jgredline's Avatar

Join Date: Oct 2007
Location: LosAngeles, Ca.
Photos: Albums
Posts: 10,530
QuoteOriginally posted by dkittle Quote
I have the DG version and it's pretty good, for it's price (half the price of the Bigma). It's reasonably sharp at 400mm and I think it's the shortest (physical length) and lightest of Sigma's 400mm+ zoom lenses. I value the small size. Here is a link to some pictures I have on my flickr site taken with this lens.

Note, the K10D had some problems focusing on the red cardinal - I might have been able to get a sharper shot. And the "First Fall Colors" is out of focus 'cause the leaves were blowing in the wind (but I liked the photo none the less :-) ).

Flickr: siderean's photos tagged with sigma135400mmf4556dg
I have the APO DG series as well...I also have the bigma, but use my 135-400 instead of the bigma. I find the sharpness to be quite good...

Ok..Here are some examples of photos taken with my K10D that have only been cropped and resized...These photos were taken at 4 stories up on top of the Kodak theature in Hollywood...The distance is about 1/2 a city block away...In other words, this put my sigma lens to the test...

The lens here is set at 250mm


The lens here is set at 300mm


The lens here is set at 400mm...While a little soft, I could have sharpened it a little, but I wanted to show the photo un altered..
02-06-2008, 12:50 PM   #4
Veteran Member
offertonhatter's Avatar

Join Date: Jul 2007
Location: Stockport, Manchester. UK
Posts: 377
There is I believe is no difference, I have the 170-500 APO, does not have DG on the lens, yet it is the same and a new model. I think it is to do with when it was made. Earlier models did not have DG due to the lack of DSLR's But with the explosion of DSLR ownership, along with Sigma bringing out the DC range which is DSLR only, they needed a logo on the normal range to show that they can be used on 35mm and Digital.

02-06-2008, 12:54 PM   #5
Site Supporter
Bramela's Avatar

Join Date: Jan 2007
Location: Newcastle Australia
Photos: Gallery | Albums
Posts: 5,281
Hi
Yes I have the APO model (the earlier model). The lens turns out quite acceptable quality shots, however it has one MAJOR drawback. It suffers severly with lens creep. It has no locking mechanism, and if you happen to have it pointing slightly downward, the thing immediately extends itself to full length.
Is evident in all of the lens of this model I believe. GRRRRRRRRRRRRR.
For that reason I dont recommend it, but definitely seek out the later model as I am led to believe it does have a locking mechanism, (perhaps others could confirm that?).

Last edited by Bramela; 02-06-2008 at 01:00 PM.
02-06-2008, 01:03 PM   #6
Site Supporter
Bramela's Avatar

Join Date: Jan 2007
Location: Newcastle Australia
Photos: Gallery | Albums
Posts: 5,281
DKittle
I see you have the DG model. Do you have serious lens creep problems with your lens?
Thanks!
02-06-2008, 01:31 PM   #7
Pentaxian
jgredline's Avatar

Join Date: Oct 2007
Location: LosAngeles, Ca.
Photos: Albums
Posts: 10,530
Bruce
I do not have any lens creep what so ever. I believe your model is push / pull for adjusting focal length. Mine is conventional where you turn / twist the focal length adjuster.

02-06-2008, 02:26 PM   #8
Inactive Account




Join Date: Jun 2007
Location: Toronto, Ontario
Photos: Gallery
Posts: 429
With my model, you turn the zoom ring to zoom and it has the exact same zoom creep problems Bruce has. I need to hold the lens horizontal as I'm walking around with it. It's a pain, but inevitably I come across something I need a shorter focal length for so I swap zooms and thereby get a break from holding it :-)

02-06-2008, 03:37 PM   #9
Pentaxian
jgredline's Avatar

Join Date: Oct 2007
Location: LosAngeles, Ca.
Photos: Albums
Posts: 10,530
QuoteOriginally posted by dkittle Quote
With my model, you turn the zoom ring to zoom and it has the exact same zoom creep problems Bruce has. I need to hold the lens horizontal as I'm walking around with it. It's a pain, but inevitably I come across something I need a shorter focal length for so I swap zooms and thereby get a break from holding it :-)
Perhaps I am lucky. I have had mine for about eight months, so it is fairly new.
02-06-2008, 05:24 PM   #10
Loyal Site Supporter




Join Date: Sep 2006
Location: Bronx NY
Photos: Gallery | Albums
Posts: 5,599
Original Poster
Thanks everybody for the info and the sample shots. Looks like it's a pretty good lens.

NaCl(now all in need is a pretty good bank account!)H2O
02-06-2008, 05:46 PM   #11
Veteran Member




Join Date: Sep 2006
Location: Virginia Beach VA USA
Photos: Gallery
Posts: 1,364
"DG" in Sigmas line denotes the same thing as the DFA in Pentax. Same lens as the non-DG with the digital coating on the rear element.
02-06-2008, 05:50 PM   #12
Veteran Member
joele's Avatar

Join Date: Sep 2006
Location: Melbourne, Australia
Photos: Gallery
Posts: 1,309
QuoteOriginally posted by roscot Quote
"DG" in Sigmas line denotes the same thing as the DFA in Pentax. Same lens as the non-DG with the digital coating on the rear element.
Agreed...

Actually I find the difference noticable, as I had a Sigma 50 EX then a Sigma 50 DG EX and there was considerable reduction of what looked like fringing when you shot into something backlit by the sun..
02-06-2008, 07:33 PM   #13
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,314
QuoteOriginally posted by roscot Quote
"DG" in Sigmas line denotes the same thing as the DFA in Pentax. Same lens as the non-DG with the digital coating on the rear element.
Not quite. You need to be very careful. The D stands for the "digitally optimized" coatings, BUT the G stands for full frame.

before the release of large numbers of ASP-C sensors, all sigma lenses were full frame,

They now have DG lenses for full frame, but DC for ASP-C sensor image circle.

Same concept as the tamron Di and Dii lenses. Di are full frame and Dii are ASP-C sensor image circle.

While I don't have either of these, I have the APO 70-200 F2.8 EX (not DG) lens quality is excellent, images are great.
02-07-2008, 03:14 AM   #14
Veteran Member




Join Date: Sep 2006
Location: Virginia Beach VA USA
Photos: Gallery
Posts: 1,364
Correct, as are the DFA full frame, as in the DFA 100 f2.8 Macro, as opposed to DA which are APS-C only.
07-29-2009, 04:50 AM   #15
Junior Member
The PIPE's Avatar

Join Date: Jun 2007
Location: Weymouth, MA USA
Photos: Gallery
Posts: 29
I would STILL loooove to get one of those...

Dear Fellow Pentaxians:

The PIPE here...and I've wanted one of those "Li'l Bigma" 135-400 lenses ever since I first found out about them, as the DG version could easily be used on BOTH of my Pentaxes...either my "film burner" K1000SE brown vinylclad version from 1980, with the split-image centertarget/microprism ring in the viewfinder (a rarity from what I've heard). OR my 2007-purchased K100D digital SLR.

I've been laid off since September 2008 when the financial crisis hit, and have been on unemployment ever since (with only ONE interview to show for it)...so one can well imagine that the "Li'l Bigma", my nickname for the 135-400 Sigma zoom, might as well not even exist for me, at least UNTIL I can get a new job-but who knows when that is going to happen, hmmm?

However, quite some time ago I got myself another nice, but all-manual, Vivitar Series One 70-210 macro zoom lens as a used unit from KEH.com, and I'm not at all sorry I got it used...it's one of the much sought-after "first version" units from what Mark Roberts' site at Vivitar 70-210 Series 1 Macro Zoom Lenses - Mark Roberts Photography had to say.

My Pentaxforums thread from about a year ago, at https://www.pentaxforums.com/forums/post-your-photos/37893-1st-serious-trial-...0mm-k100d.html , was my first serious try at using my "film burner" Vivitar S1 manual telephoto on my K100D, and I quickly got used to using it on my K100D...it's not a "real" substitute for a "Li'l Bigma", but it IS a lens I've already got, and it SEEMS to be quite a usable combination with my K100D, at least until I can find a "Li'l Bigma" in a Pentax-K mount. But that's ONLY after I can FINALLY manage to get back to work, and maybe I'll be able to find the 135-400 as a used lens, and perhaps even from a place like KEH, where I got the Vivitar S1 from in the first place.

I would STILL love to have a Sigma 135-400 unit...but that WILL have to wait...and at least in the meantime that wonderfully adaptable K-mount design allows me to keep using my Vivitar S1 with my K100D !

Yours Sincerely,

The PIPE!
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
apo, dg, k-mount, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sigma APO 300mm F2.8 EX DG Vs FA* 400/4.6 netuser Pentax SLR Lens Discussion 11 10-24-2014 05:37 AM
For Sale - Sold: FS (CONUS) Sigma 135-400 4.5-5.6 APO az-dave Sold Items 12 02-18-2008 06:26 AM
Sigma 400 F5.6 APO NaClH2O Pentax SLR Lens Discussion 9 12-29-2007 12:44 PM



All times are GMT -7. The time now is 05:44 AM. | See also: NikonForums.com, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top