Pentax Mount Equivalent for Canon 135mm F/2?

dantekgeek · 12-13-2008, 12:16 AM

Nothing I've seen suggests anything like this exists, but I can hope, right?

(I know there are a fair number of 2.8 offerings, but the .8 makes a big difference in low light.)

Edit: Darn, posted in the wrong forum section. Requested thread be moved (thanks soccerjoe!)

Last edited by dantekgeek; 12-13-2008 at 12:23 AM.

soccerjoe5 · 12-13-2008, 12:22 AM

Re: moving the thread, there's a flag in the bottom left of your initial post. Report it and ask for it to be moved

Jonson PL · 12-13-2008, 03:52 AM

There is the Pentax A* 135/1.8. And also around that range; Voigtlander 125/2.5, Zeiss 100/2. But all of these are manual focus. I would also be very interested in a 135/2 lens for Pentax

soccerjoe5 · 12-13-2008, 04:17 AM

I hear you guys, a limited DA 100-135mm f/2 - 2.8 would be sweet. That and the DA15 would pretty much cover everything for me!

augustmoon · 12-13-2008, 04:50 AM

Solid, sharp lens. great contrast, optically terrific even at F2, no noticeable issues...

That was one of my favorite lenses in any mount, and one of the best lenses ever. Nikon made a couple 105's that were almost as good or just about as good, but you won't even come close in Pentax mount near that focal length and not near f2. It would be like if there was an FA135 Ltd F2, that was the longer sibling to the FA77.

Don't know what to tell you, I'm sure you'll get a lot of suggestions for lenses in that focal range or suggestions for fast lenses, but you won't find a fast lens in that range with anywhere near the IQ of the Canon, one of about 2, maybe 3 "L" series lenses that are actually "L" worthy imho.

The DA*50-135 is nice, but it's 2.8 not 2.0 and best results to stay a little back from max 135mm. The DFA100 Macro and the FA100 Macro both sharp if sharp is what you want, but shy of 135mm and again, 2.8... Zeiss has a 100 macro as well, but it will be a manual aperture and focus and reported to be low contrast until stopped down.

**NaClH2O** · 12-13-2008, 05:23 AM

There is the Pentax K 135 F2.5. Not quite as fast, but only a 1/2 stop slower than F2.0. Excellent lens, but totally manual. Many here swear by it. Moderately fast, contrasty, excellent color rendition, and sharp sharp sharp.

NaCl(if it's not on the camera it's in the bag)H2O

**Kerrowdown** · 12-13-2008, 12:22 PM

I own and can therefore recommend the A* 135 mm f1:1.8, but they are now getting both expensive and hard to come by, hope I don't ever have to replace it.

vindrum · 12-13-2008, 01:30 PM

vivitar 135/1.8 m42
vivitar 135/2.3 m42
and........canon fdn 135/2 on Pentax

Ïåðåäåëêà îáúåêòèâà Canon FDn íà Pentax - Ôîðóìû Ïåíòà-êëóáà

dantekgeek · 12-13-2008, 03:36 PM

Looks like the A* is about as close as I'll get, which is admittedly pretty darn close. I don't mind so much a manual focus lens as long as its auto-aperture (my mid-range zoom is covered by my nifty-fifty 1.4 A on the crop).

Anyone have any idea what these things are going for these days, or if they're even possible to come by? The only price I saw online was EUR1500 (!!) for a copy with pretty significant cosmetic damage.

Thanks for the suggestions.

Torphoto · 12-13-2008, 05:10 PM

I hope hoya is reading this, we so do need a good 120-150mm fast tele,

**rparmar** · 12-13-2008, 05:37 PM

Yes, i know it's a half stop slower and not quite so long, but the IQ is unsurpassed...

Vivitar Series 1 105mm f/2.5.

Blue · 12-14-2008, 02:17 PM

There is the Porst 135mm f1.8 manual focus lens: https://www.pentaxforums.com/forums/photographers-marketplace/41416-porst-135...-pentax-k.html

roentarre · 12-14-2008, 11:04 PM

A* 135mm f1.8 is supposed to be the untouchable legendary lens and you would get the recommendation from many people.

My use of this lens is plagued by its incredible macroscopic fringeing ability, only usable til f4 or so... It is only starting to become sharp in the centre after f2.8 or so...

Then Fa 135mm f2.8 is also prone to frineging wide open and this makes an unattractive option for me.

To mind you that Australian sun is rather harsh and strong so that these lenses do tend to create the fringeing problems in the outdoor environment...

arkham · 12-14-2008, 11:18 PM

Originally posted by NaClH2O

There is the Pentax K 135 F2.5. Not quite as fast, but only a 1/2 stop slower than F2.0. Excellent lens, but totally manual. Many here swear by it. Moderately fast, contrasty, excellent color rendition, and sharp sharp sharp.

NaCl(if it's not on the camera it's in the bag)H2O

There's also an SMC Takumar (M42 screwmount) 135 f2.5 that I'm a big fan of. Of course that's also manual only and the K mount adapter is required.

You can see it here in a recent marketplace thread:

https://www.pentaxforums.com/forums/sold-items/34036-sold-smc-takumar-135mm-f...e-version.html

**Just1MoreDave** · 12-15-2008, 10:43 AM - **1 Like**

Originally posted by arkham

There's also an SMC Takumar (M42 screwmount) 135 f2.5 that I'm a big fan of. Of course that's also manual only and the K mount adapter is required.

You can see it here in a recent marketplace thread:

https://www.pentaxforums.com/forums/sold-items/34036-sold-smc-takumar-135mm-f...e-version.html

The marketplace ad mentions that there are two versions of this lens. One is part number 43802 with 5 elements, and the other is part number 43812 with six elements. The part number is stamped into the bottom of the auto/man switch. Also the markings on the distance scale are different and 43812 is heavier.

Part number 43812 has the same optical design as the SMC Pentax K-mount version.

Here is an interesting test comparing the Canon to several other 135s including the S-M-C Takumar f2.5. The Takumar holds up very well. I believe there is a recent test of the K-mount version that shows it's competitive with the DA* 50-135.

http://oomz.net/135/

12-13-2008, 12:16 AM	#1
dantekgeek Senior Member Join Date: Oct 2008 Location: NYC Posts: 100	Pentax Mount Equivalent for Canon 135mm F/2? Nothing I've seen suggests anything like this exists, but I can hope, right? (I know there are a fair number of 2.8 offerings, but the .8 makes a big difference in low light.) Edit: Darn, posted in the wrong forum section. Requested thread be moved (thanks soccerjoe!) Last edited by dantekgeek; 12-13-2008 at 12:23 AM.

12-13-2008, 04:50 AM	#5
augustmoon Inactive Account Join Date: Mar 2008 Location: Toronto, San Diego, Seattle Posts: 455	no help here Solid, sharp lens. great contrast, optically terrific even at F2, no noticeable issues... That was one of my favorite lenses in any mount, and one of the best lenses ever. Nikon made a couple 105's that were almost as good or just about as good, but you won't even come close in Pentax mount near that focal length and not near f2. It would be like if there was an FA135 Ltd F2, that was the longer sibling to the FA77. Don't know what to tell you, I'm sure you'll get a lot of suggestions for lenses in that focal range or suggestions for fast lenses, but you won't find a fast lens in that range with anywhere near the IQ of the Canon, one of about 2, maybe 3 "L" series lenses that are actually "L" worthy imho. The DA*50-135 is nice, but it's 2.8 not 2.0 and best results to stay a little back from max 135mm. The DFA100 Macro and the FA100 Macro both sharp if sharp is what you want, but shy of 135mm and again, 2.8... Zeiss has a 100 macro as well, but it will be a manual aperture and focus and reported to be low contrast until stopped down.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Equivalent of Pentax primes on Canon and Nikon FF systems	dexmus	Pentax SLR Lens Discussion	2	10-01-2010 11:16 PM
Whats the Pentax equivalent to the Canon 70-200mm F4L	dude163	Pentax SLR Lens Discussion	44	05-08-2010 12:47 PM
Canon to Pentax K-Mount?	coelhom	Pentax SLR Lens Discussion	3	01-11-2010 11:08 PM
New to Pentax from the Canon Camp Pentax equivalent to Canon 70-200mm f/4 L	frank2001	Pentax SLR Lens Discussion	53	12-23-2009 05:07 PM

12-13-2008, 12:22 AM	#2
soccerjoe5 Veteran Member Join Date: May 2008 Location: Philippines Photos: Gallery Posts: 1,343	Re: moving the thread, there's a flag in the bottom left of your initial post. Report it and ask for it to be moved

12-13-2008, 03:52 AM	#3
Jonson PL Veteran Member Join Date: Dec 2006 Location: Copenhagen Photos: Gallery Posts: 1,842	There is the Pentax A* 135/1.8. And also around that range; Voigtlander 125/2.5, Zeiss 100/2. But all of these are manual focus. I would also be very interested in a 135/2 lens for Pentax

12-13-2008, 04:17 AM	#4
soccerjoe5 Veteran Member Join Date: May 2008 Location: Philippines Photos: Gallery Posts: 1,343	I hear you guys, a limited DA 100-135mm f/2 - 2.8 would be sweet. That and the DA15 would pretty much cover everything for me!

12-13-2008, 05:23 AM	#6
NaClH2O Site Supporter Join Date: Sep 2006 Location: Bronx NY Photos: Gallery \| Albums Posts: 5,631	There is the Pentax K 135 F2.5. Not quite as fast, but only a 1/2 stop slower than F2.0. Excellent lens, but totally manual. Many here swear by it. Moderately fast, contrasty, excellent color rendition, and sharp sharp sharp. NaCl(if it's not on the camera it's in the bag)H2O

12-13-2008, 12:22 PM	#7
Kerrowdown PEG Moderator Join Date: Aug 2008 Location: Highlands of Scotland... "Hold Infinity in the palm of your hand" - William Blake Photos: Gallery Posts: 57,863	I own and can therefore recommend the A* 135 mm f1:1.8, but they are now getting both expensive and hard to come by, hope I don't ever have to replace it.

12-13-2008, 01:30 PM	#8
vindrum New Member Join Date: Jul 2008 Location: moscow Photos: Gallery Posts: 15	vivitar 135/1.8 m42 vivitar 135/2.3 m42 and........canon fdn 135/2 on Pentax Ïåðåäåëêà îáúåêòèâà Canon FDn íà Pentax - Ôîðóìû Ïåíòà-êëóáà

12-13-2008, 03:36 PM	#9
dantekgeek Senior Member Join Date: Oct 2008 Location: NYC Posts: 100 Original Poster	Looks like the A* is about as close as I'll get, which is admittedly pretty darn close. I don't mind so much a manual focus lens as long as its auto-aperture (my mid-range zoom is covered by my nifty-fifty 1.4 A on the crop). Anyone have any idea what these things are going for these days, or if they're even possible to come by? The only price I saw online was EUR1500 (!!) for a copy with pretty significant cosmetic damage. Thanks for the suggestions.

12-13-2008, 05:10 PM	#10
Torphoto Veteran Member Join Date: Mar 2008 Location: Trinidad W.I. Photos: Gallery Posts: 612	I hope hoya is reading this, we so do need a good 120-150mm fast tele,

12-13-2008, 05:37 PM	#11
rparmar Site Supporter Join Date: Jan 2008 Photos: Gallery Posts: 8,823	Yes, i know it's a half stop slower and not quite so long, but the IQ is unsurpassed... Vivitar Series 1 105mm f/2.5.

12-14-2008, 02:17 PM	#12
Blue Moderator Site Supporter Join Date: Jun 2008 Location: Florida Hill Country Photos: Gallery \| Albums Posts: 17,377	There is the Porst 135mm f1.8 manual focus lens: https://www.pentaxforums.com/forums/photographers-marketplace/41416-porst-135...-pentax-k.html

12-14-2008, 11:04 PM	#13
roentarre Veteran Member Join Date: Oct 2006 Location: Melbourne, Australia Posts: 11,783	A* 135mm f1.8 is supposed to be the untouchable legendary lens and you would get the recommendation from many people. My use of this lens is plagued by its incredible macroscopic fringeing ability, only usable til f4 or so... It is only starting to become sharp in the centre after f2.8 or so... Then Fa 135mm f2.8 is also prone to frineging wide open and this makes an unattractive option for me. To mind you that Australian sun is rather harsh and strong so that these lenses do tend to create the fringeing problems in the outdoor environment...

12-14-2008, 11:18 PM	#14
arkham Junior Member Join Date: Nov 2006 Location: New York Posts: 30	Originally posted by NaClH2O There is the Pentax K 135 F2.5. Not quite as fast, but only a 1/2 stop slower than F2.0. Excellent lens, but totally manual. Many here swear by it. Moderately fast, contrasty, excellent color rendition, and sharp sharp sharp. NaCl(if it's not on the camera it's in the bag)H2O There's also an SMC Takumar (M42 screwmount) 135 f2.5 that I'm a big fan of. Of course that's also manual only and the K mount adapter is required. You can see it here in a recent marketplace thread: https://www.pentaxforums.com/forums/sold-items/34036-sold-smc-takumar-135mm-f...e-version.html

12-15-2008, 10:43 AM - 1 Like	#15
Just1MoreDave Site Supporter Join Date: Feb 2007 Location: Aurora, CO Photos: Gallery \| Albums Posts: 6,340	Originally posted by arkham There's also an SMC Takumar (M42 screwmount) 135 f2.5 that I'm a big fan of. Of course that's also manual only and the K mount adapter is required. You can see it here in a recent marketplace thread: https://www.pentaxforums.com/forums/sold-items/34036-sold-smc-takumar-135mm-f...e-version.html The marketplace ad mentions that there are two versions of this lens. One is part number 43802 with 5 elements, and the other is part number 43812 with six elements. The part number is stamped into the bottom of the auto/man switch. Also the markings on the distance scale are different and 43812 is heavier. Part number 43812 has the same optical design as the SMC Pentax K-mount version. Here is an interesting test comparing the Canon to several other 135s including the S-M-C Takumar f2.5. The Takumar holds up very well. I believe there is a recent test of the K-mount version that shows it's competitive with the DA* 50-135. http://oomz.net/135/