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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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 Posted: Thu Jul 02, 2009 11:01 am Post subject: Sigma 21-35mm f/3.5-4.2 experiences (samples added) |
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Spotmatic wrote:
Yesterday I got a box full of lenses for virtually nothing. Among them I found a nice Sigma 21-35mm with Pentax KA mount. Is this lens worth keeping? I have made a few test shots at night and these came out sharp on a 6MP camera, but I do not know how this will work out on a 15MP SLR.
It's quite a solid, heavy, well-built lens.
(Never mind the awful products shots. Even I have the right to take crappy photos  )
And the results with this lenss. The first three are with the Pentax *ist DS (6MP APS-C camera). This includes a shot directly into the sun to see how it performs in difficult conditions:
The following three are with the lens on the Canon 5D, so the lens is used fullframe. I used Alex' PK to EOS adapter. It does not work as-is on the 5D because the camera has a problem with the light baffles on K mount lenses (and probably also the diaphragm lever). So I just held the lens to the adapter (already fitted to the camera) and that worked, even up to infinity. I'll try to remove the light baffle from the Sigma (it's fastened with three screws so it could be done).
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical
Last edited by Spotmatic on Fri Jul 03, 2009 6:07 am; edited 2 times in total |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Thu Jul 02, 2009 11:22 am Post subject: |
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hk300 wrote:
nice lens!
it's a sigma alpha lens, so it was top of the Sigma range at that time (although that does not mean anything ...  )
Did you try to put it on your 5D?
And ... don't get rid of it that fast ... i want to try 
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No longer member , please don't try to contact to him |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Thu Jul 02, 2009 11:26 am Post subject: |
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Spotmatic wrote:
| hk300 wrote: |
nice lens!
it's a sigma alpha lens, so it was top of the Sigma range at that time (although that does not mean anything ... )
Did you try to put it on your 5D?
And ... don't get rid of it that fast ... i want to try |
Why did I know that you would be the first to react?
I'll try to put it on the 5D but the camera does not like the K mount adapter too well.
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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PBFACTS
Joined: 24 Dec 2008
Posts: 569
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| Posted: Thu Jul 02, 2009 12:31 pm Post subject: |
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PBFACTS wrote:
| hk300 wrote: |
| It's a sigma alpha lens, so it was top of the Sigma range at that time (although that does not mean anything ... ) |
The alpha, beta, ... name on sigma lenses did not mean top of range but it was just a way to name the type of lens
At that period it was NO Sigma top of range classification (as Ex now) but higher specs or lower specs lenses (this one was a higher specs of course !)
This particular lens is the second and last version of sigma 21-35
The first one was the 21-35 3.5/4 2 touchs
the second (your lens) is one-touch and is (as far as i know) the ONLY one-touche wide angle lens sold
I have got both versions (my 2nd version for om is for sale)
Quality ok
ps : the boats pictures is slightly out of focus
_________________
OM USER .. I KEEP/USE:
Om2 sp + T32 (grip/filter/zoom) + T8
+ Zuiko 16mm 3.5 / 55mm 1.2 / 65-200 4/ x1.4
+ Sigma 8mm 4.0 / 14mm 3.5 / 18-35 3.5-4.5
+ Tamron 35/105 2.8
+Tokina 150/500 5.6
+ Kiron 105/2.8 macro 1:1
+ Vivitar S1 90/180 falst field macro
+ 2x Doubler HR7
>>I SELL: OM10 + OM4ti
+ i sell: OM Md1 + Md 2 + Grip PowerPack + charger
+ i sell: OM Zuiko 24mm 2.8 / 28mm 3.5 / 50mm 1.8 / 50mm 1.4 / 50mm 3.5 macro / 35-70 3.6 / 35-105 3.5-4.5 / 75-150 4 / 500mm / 2xA
+ i sell: OM Kiron 28/105 3.2-4.5 / 1.5 converter
+ i sell: OM Makinon reflex 5.6/300 + Spector reflex (makinon) 500mm
+ i sell: OM Macro panagor extender 1:1
+ i sell: OM Sigma 16mm 2.8 fisheye (last version) / 21-35 3.5-4.2 ot/ 28-70 2.8 /1000mm mirror
+ i sell: Tamron 28-70 3.5-4.5 / 28-80 sp 3.5-4.2 / 28-135 sp 4-4.5 / /28-200 3.5 / 35-135 3..5-4.5 / 90mm sp macro 1:1 2.8
+ i sell: OM Soligor 2x doubler / x3 converte
+ i sell: Soligor FisheEye x0.15
+ i sell: OM Tokina 28/135 4-4.6 / 70/210 3.5 (= vivitar S1 v2)
+ i sell: OM Vivitar 28-70 3.5-4.8 / 28-90 s1 2.8-3.5 / 35-70 2.8-3.8 / 55/2.8 Macro 1:1 (komine) / 70-150 3.8 ot (kiron) / 75-150 ot 3.8 (tokina + 2x matched)
+ i sell : OM cosina 100-500 5.6/8 |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Thu Jul 02, 2009 12:50 pm Post subject: |
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Spotmatic wrote:
Thanks for the nice examples! Looks like a decent performer. Were these made on a cropped body or shot on film?
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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hk300
Joined: 30 Oct 2008
Posts: 1041
Location: Hong Kong
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| Posted: Thu Jul 02, 2009 12:52 pm Post subject: |
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hk300 wrote:
| PBFACTS wrote: |
The alpha, beta, ... name on sigma lenses did not mean top of range but it was just a way to name the type of lens
At that period it was NO Sigma top of range classification (as Ex now) but higher specs or lower specs lenses (this one was a higher specs of course !)
This particular lens is the second and last version of sigma 21-35
The first one was the 21-35 3.5/4 2 touchs
the second (your lens) is one-touch and is (as far as i know) the ONLY one-touche wide angle lens sold
I have got both versions (my 2nd version for om is for sale)
Quality ok |
Thanks for the valuable info!
_________________
No longer member , please don't try to contact to him |
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LucisPictor
Joined: 26 Feb 2007
Posts: 17633
Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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| Posted: Thu Jul 02, 2009 2:14 pm Post subject: |
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LucisPictor wrote:
I had the AF version (Nikon) of this lens and I really liked it at my dad's Fuji S2 pro. There are some problems with flares and some CAs, but otherwise it's fine.
And I have read in an old magazine that the MF version is even better than the AF lens.
You should definitely try it!
_________________
Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator 
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Thu Jul 02, 2009 2:26 pm Post subject: |
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Spotmatic wrote:
| LucisPictor wrote: |
I had the AF version (Nikon) of this lens and I really liked it at my dad's Fuji S2 pro. There are some problems with flares and some CAs, but otherwise it's fine.
And I have read in an old magazine that the MF version is even better than the AF lens.
You should definitely try it! |
Thanks for the information, Carsten! I will try it out tonight and post the results here.
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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PBFACTS
Joined: 24 Dec 2008
Posts: 569
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| Posted: Thu Jul 02, 2009 2:47 pm Post subject: |
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PBFACTS wrote:
| Spotmatic wrote: |
| Thanks for the nice examples! Looks like a decent performer. Were these made on a cropped body or shot on film? |
shot on film + scanned
_________________
OM USER .. I KEEP/USE:
Om2 sp + T32 (grip/filter/zoom) + T8
+ Zuiko 16mm 3.5 / 55mm 1.2 / 65-200 4/ x1.4
+ Sigma 8mm 4.0 / 14mm 3.5 / 18-35 3.5-4.5
+ Tamron 35/105 2.8
+Tokina 150/500 5.6
+ Kiron 105/2.8 macro 1:1
+ Vivitar S1 90/180 falst field macro
+ 2x Doubler HR7
>>I SELL: OM10 + OM4ti
+ i sell: OM Md1 + Md 2 + Grip PowerPack + charger
+ i sell: OM Zuiko 24mm 2.8 / 28mm 3.5 / 50mm 1.8 / 50mm 1.4 / 50mm 3.5 macro / 35-70 3.6 / 35-105 3.5-4.5 / 75-150 4 / 500mm / 2xA
+ i sell: OM Kiron 28/105 3.2-4.5 / 1.5 converter
+ i sell: OM Makinon reflex 5.6/300 + Spector reflex (makinon) 500mm
+ i sell: OM Macro panagor extender 1:1
+ i sell: OM Sigma 16mm 2.8 fisheye (last version) / 21-35 3.5-4.2 ot/ 28-70 2.8 /1000mm mirror
+ i sell: Tamron 28-70 3.5-4.5 / 28-80 sp 3.5-4.2 / 28-135 sp 4-4.5 / /28-200 3.5 / 35-135 3..5-4.5 / 90mm sp macro 1:1 2.8
+ i sell: OM Soligor 2x doubler / x3 converte
+ i sell: Soligor FisheEye x0.15
+ i sell: OM Tokina 28/135 4-4.6 / 70/210 3.5 (= vivitar S1 v2)
+ i sell: OM Vivitar 28-70 3.5-4.8 / 28-90 s1 2.8-3.5 / 35-70 2.8-3.8 / 55/2.8 Macro 1:1 (komine) / 70-150 3.8 ot (kiron) / 75-150 ot 3.8 (tokina + 2x matched)
+ i sell : OM cosina 100-500 5.6/8 |
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PBFACTS
Joined: 24 Dec 2008
Posts: 569
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| Posted: Thu Jul 02, 2009 2:59 pm Post subject: |
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PBFACTS wrote:
| LucisPictor wrote: |
There are some problems with flares and some CAs, but otherwise it's fine.
|
Flare not perfect but not too bad :
_________________
OM USER .. I KEEP/USE:
Om2 sp + T32 (grip/filter/zoom) + T8
+ Zuiko 16mm 3.5 / 55mm 1.2 / 65-200 4/ x1.4
+ Sigma 8mm 4.0 / 14mm 3.5 / 18-35 3.5-4.5
+ Tamron 35/105 2.8
+Tokina 150/500 5.6
+ Kiron 105/2.8 macro 1:1
+ Vivitar S1 90/180 falst field macro
+ 2x Doubler HR7
>>I SELL: OM10 + OM4ti
+ i sell: OM Md1 + Md 2 + Grip PowerPack + charger
+ i sell: OM Zuiko 24mm 2.8 / 28mm 3.5 / 50mm 1.8 / 50mm 1.4 / 50mm 3.5 macro / 35-70 3.6 / 35-105 3.5-4.5 / 75-150 4 / 500mm / 2xA
+ i sell: OM Kiron 28/105 3.2-4.5 / 1.5 converter
+ i sell: OM Makinon reflex 5.6/300 + Spector reflex (makinon) 500mm
+ i sell: OM Macro panagor extender 1:1
+ i sell: OM Sigma 16mm 2.8 fisheye (last version) / 21-35 3.5-4.2 ot/ 28-70 2.8 /1000mm mirror
+ i sell: Tamron 28-70 3.5-4.5 / 28-80 sp 3.5-4.2 / 28-135 sp 4-4.5 / /28-200 3.5 / 35-135 3..5-4.5 / 90mm sp macro 1:1 2.8
+ i sell: OM Soligor 2x doubler / x3 converte
+ i sell: Soligor FisheEye x0.15
+ i sell: OM Tokina 28/135 4-4.6 / 70/210 3.5 (= vivitar S1 v2)
+ i sell: OM Vivitar 28-70 3.5-4.8 / 28-90 s1 2.8-3.5 / 35-70 2.8-3.8 / 55/2.8 Macro 1:1 (komine) / 70-150 3.8 ot (kiron) / 75-150 ot 3.8 (tokina + 2x matched)
+ i sell : OM cosina 100-500 5.6/8 |
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LucisPictor
Joined: 26 Feb 2007
Posts: 17633
Location: Oberhessen, Germany / Maidstone ('95-'96)
Expire: 2013-12-03
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| Posted: Thu Jul 02, 2009 6:36 pm Post subject: |
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LucisPictor wrote:
Here are some older shots. Taken withe the Nikon D100.
Nikon 18-35 @f4.5
Nikon 18-35 @f11
Sigma AF 21-35 @f4.2
Sigma AF 21-35 @f11
But OK, this was really a nasty situation for any lens. Still, the Nikkor did better than the Sigma, at least wide open.
_________________
Personal forum activity on pause every now and again (due to job obligations)!
Carsten, former Moderator
Things ON SALE
Carsten = "KAPCTEH" = "Karusutenu" | T-shirt?.........................My photos from Emilia: http://www.schouler.net/emilia/emilia2011.html
My gear: http://retrocameracs.wordpress.com/ausrustung/
Old list: http://forum.mflenses.com/viewtopic.php?t=65 (Not up-to-date, sorry!) | http://www.lucispictor.de | http://www.alensaweek.wordpress.com |
http://www.retrocamera.de |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Thu Jul 02, 2009 8:01 pm Post subject: |
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Spotmatic wrote:
Thanks for the examples, guys! Very interesting!
I have updated my first post in this thread with my own samples, shot with the Pentax *ist DS and the Canon 5D. I think the Sigma is a decent performer although I need to test it more... For now I think it has a bit weak corners on fullframe.
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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Screamin Scott
Joined: 13 Oct 2007
Posts: 1014
Location: Dallas, Georgia USA
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| Posted: Thu Jul 02, 2009 9:32 pm Post subject: |
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Screamin Scott wrote:
I have the AF version of this lens in Nikon mount. It's very sharp on my D70s but does suffer from flare & some CA. The AF version has a non-removable hood...According to photodo.com's mtf tests, the AF is a better performer than the MF version...
_________________
Cameras-Nikon D300, D7100,D610,FE2,FTN ,FT2,N90s, Olympus Pen EP-3 & Olympus OM-D E-M10
Nikkor AF Zooms=28-105/3.5D,28-70/3.5D,35-135/3.5, et al
Nikkor AF //50/1.8,//Nikkor MF//50/2ai,50/1.8ais 50/1.4ai,24/2.8ais,28/2.8ai,28/3.5ai,55microAis/2.8,105/2.5ai,200/4ai,300/4.5ai35-135/3.5Ais,et al
Kiron /Kino made lenses//70-210/4ai,28-105/3.2ai,30-80/3.5ai,Viv 28/2ai,35-85/2.8aiVivS1,105/2.8Ais Dine,24-48/3.8ai VivS1,50-150/3.8aiViv,28-85/2.8aiViv,100/2.8Nai Viv,70-210/3.5Nai Viv,28/2.5ai Viv Komine made Viv//24/2Ais,135/2.8aiCF,28-50/3.5ai,28-90/2.8ai Viv S1,80-200/4.5aiCosina made Viv 19/3.8 Ais...Also Sigma 24/2.8 Ais Tokina made24/2.8ai VivAF Sigma 21-35/3.5,& other lenses... A link to some of my Flickr albums...
https://www.flickr.com/photos/screaminscott/albums |
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Thom Yorke
Joined: 07 Jul 2009
Posts: 7
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| Posted: Fri Jul 10, 2009 4:44 am Post subject: |
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Thom Yorke wrote:
I have this lens in the 67mm filter size and it the flare is worse than yours,
I carried it along a Minolta 35-70mm F3.5 (the alleged leica brother) and it falls short to it.
_________________
Canon 5Dw/Grip
17-40mm, 85mm 1.8, 50mm 1.4
Minolta X700 & MotorDrive, XE-7, XG-1, SRT-201, MD-20mm, 28mm 2.8, 45mm, 50mm 1.4, 58mm 1.4, 85mm 1.7, 100mm F2, 135mm F2 & F2.8, 35-70mm F3.5, 70-210mm F4,
Sigma 21-35mm Vivitar 28-90mm, 28-105, 70-210mm F3.5 28mm 2.5, 35mm 1.9, 135mm 2.8, 200mm 3.5 |
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Fri Jul 10, 2009 8:51 pm Post subject: |
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Spotmatic wrote:
Tonight I cut off the tab that protects the diaphragm lever on the Sigma 21-35. This tab serves no other purpose, so I got rid of it. The end result is that I have now a lens that works perfectly on any Pentax DSLR or film body, as well as my Canon 5D (with the help of the PK to EOS adapter I got from Alex, HK300). There are *no* infinity issues that I can see on the 5D body, as the back element stays in place while focusing.
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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Orio
Joined: 24 Feb 2007
Posts: 29545
Location: West Emilia
Expire: 2012-12-04
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| Posted: Fri Jul 10, 2009 9:09 pm Post subject: |
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Orio wrote:
The lens seems nicely sharp but the flare in the original Spotmatic's picture is probably the worst I have seen in quite some time (sorry!)
_________________
Orio, Administrator
T*
NE CEDE MALIS AUDENTIOR ITO
Ferrania film is reborn! http://www.filmferrania.it/
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Spotmatic
Joined: 18 Aug 2008
Posts: 4045
Location: Netherlands
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| Posted: Fri Jul 10, 2009 9:20 pm Post subject: |
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Spotmatic wrote:
No need to feel sorry though, as I completely agree with you. Fortunately, I almost never shoot in such adverse conditions, so I think I can live with it. Easily, as the lens only cost me somewhere along the line of 10 euros
_________________
Peter - Moderator
Pentax K-5 + Pentax 645 + Canon 5D + Bessa RF 10,5cm Heliar, and a 'little' bag full of MF lenses. The lens list is * here *.
My fast 80s: Asahi-Kogaku Takumar 83mm f/1.9 - Super-Takumar 85mm f/1.9 - FA 77mm f/1.8 Limited - Cyclop 85/1.5 (Helios-40 innards) - Komura 80mm f/1.8 - Meyer Görlitz Primoplan 7,5cm 1:1.9 - Carl Zeiss Jena 80mm f/1.8 Pancolar - Canon 85mm f/1.8 S.S.C. - Canon 85mm f/1.2 S.S.C. Aspherical |
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vulko
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| Posted: Fri Sep 10, 2010 4:54 pm Post subject: |
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vulko wrote:
Got a Sigma 21-35/3.5-4.0 zoom lens for Nikon. Looks different, but IQ and bokeh looks the same. Great lens, i was impressed but the performance. |
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declan
Joined: 17 Dec 2009
Posts: 162
Location: Indonesia
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| Posted: Sun Jan 29, 2012 5:56 am Post subject: sigma 21-35mm/f3.5-4.2 minolta md mount |
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declan wrote:
Just found this wide zoom lens after i had my one and only af 14-54mk2, it seems a nice result lens
_________________
Owning a DSLR does not make you a photographer. It makes you a DSLR owner." - Anonymous
Evolt E-3|ZD 50-200 MK I|OM 65-200/f4|Tamron SP 90/f2.5|Tamron 2xtcon 18F|01F|OM 50/1.4
EP-L 2+EVF2|MMF-2|ZD 14-54 MK2|OM 50/1.8|Mal-1|Metz 44-af1
NX300|nx18-55|sef-8a
Mono-TriPod|Slingshot200AW|Compuday150|Mini Trekker AW|sling
Ebay : declan_79 |
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coisasdavida
Joined: 26 May 2013
Posts: 12
Location: Sao Paulo
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| Posted: Tue Apr 09, 2019 7:25 pm Post subject: |
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coisasdavida wrote:
Sorry to bring up such an old topic, but I got myself one of these (zoom-y II).
I managed to open the rear group and clean all elements, but I've got one very moldy front element and I can't figure out how to open the front.
I removed the name ring/plate, the hood support then the front element seems to be held by a large ring, I have the correct tool for that, but it won't move. Do you guys think they would glue this ring in place like P67 lenses? |
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guardian
Joined: 18 Mar 2009
Posts: 1746
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| Posted: Wed Apr 10, 2019 12:34 pm Post subject: |
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guardian wrote:
| coisasdavida wrote: |
| Do you guys think they would glue this ring in place like P67 lenses? |
It's a Japanese lens. You could encounter glue, aka thread lock, anywhere in the lens.
It's a sore subject for me. I love MF lenses; but I have encountered locked threads in lenses needing service FAR too often and it really spoils my fun. Sometimes you can break the darn stuff with solvent. Other times, especially when the locked element is deep within a larger lens, you end up defeated. The solvent itself is trouble for me because my lens bench is indoors and it's not always practical, where I live, to open windows. Bottom line, I hate use of thread lock in MF lenses; so annoying. |
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coisasdavida
Joined: 26 May 2013
Posts: 12
Location: Sao Paulo
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| Posted: Wed Apr 10, 2019 7:38 pm Post subject: |
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coisasdavida wrote:
Thanks, Guardian, I'll give a solvent a try. |
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Kawana87
Joined: 01 Feb 2019
Posts: 28
Location: Canada
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| Posted: Wed Apr 10, 2019 10:05 pm Post subject: |
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Kawana87 wrote:
I found sigma 21-35mm 3.5-4.0 for sale, any idea if it would it be fairly similar to this model? I can't really find any info on the f4.0 model, just the 4.2 |
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kypfer
Joined: 27 Sep 2017
Posts: 523
Location: Jersey C.I.
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| Posted: Wed Apr 10, 2019 10:27 pm Post subject: |
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kypfer wrote:
| Kawana87 wrote: |
| I found sigma 21-35mm 3.5-4.0 for sale, any idea if it would it be fairly similar to this model? I can't really find any info on the f4.0 model, just the 4.2 |
I think the f/4 (like I've got) is the earlier model, two-touch zoom/focus and built-in lens hood. Mine's in M42 mount. I've had mine (probably) since the 70's and was always happy with the results on film. Not used it so much with the advent of APS-C digital and the ubiquitous 18-55mm "kit-lens", but I wouldn't sell it unless I was really pushed 
See https://www.pentaxforums.com/userreviews/sigma-21-35mm-f35-4.html if that helps. |
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coisasdavida
Joined: 26 May 2013
Posts: 12
Location: Sao Paulo
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| Posted: Fri Apr 12, 2019 4:19 pm Post subject: |
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coisasdavida wrote:
| guardian wrote: |
| coisasdavida wrote: |
| Do you guys think they would glue this ring in place like P67 lenses? |
It's a Japanese lens. You could encounter glue, aka thread lock, anywhere in the lens. |
OK, so here is what happened.
I went to a friend's, he has more experience than me in this matter.
We tried solvent but the front ring still wouldn't move.
We then removed the rubber from the focus ring and found a piece of silver tape, we removed that too. And then 4 very small screws.
The entire front of the lens came out and we were able to clean the dirty element very easily.
When putting everything together we had to adjust the focus scale.
Much easier than I ever thought. |
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