135/1.4 Mitakon for Pentax? What to do ?

rawr · 03-13-2016, 11:45 PM

Depending on what you value in a lens, of course, but the K-mount (with full aperture control) 135/f2.0 SamYang does this for USD$486 at B&H (if resolution is a priority):

:

Bokeh is said to be quite good too. [I seem to be talking myself into buying this lens - sorry Clinton.

].

**Clinton** · 03-14-2016, 10:14 PM - **2 Likes**

I think this chart is more telling:
How much blur? - A visual background blur calculator

It's interesting to compare the subject isolation to the 400/2.8

rawr · 03-15-2016, 01:39 AM

Originally posted by Clinton

I think this chart is more telling:

An interesting site. Very useful to run over one's lenses (or future lenses).

I never imagined there would be such a wide 'blur gap' between 85/1.4 and 77/1.8. And 35/1.4 is a huge disappointment.

**niceshot** · 03-15-2016, 01:56 AM

Come on buy it

**barondla** · 03-15-2016, 06:00 AM

Buy it. You are obviously interested in it. 135 f1.4 will allow some amazing images. Think of the creativity. It will be a very rare lens. If you hate it, you can sell it. If you sell it at a loss just look at it as renting the lens.

A serious question. Are any DSLR optical systems calibrated well enough to accurately manual focus this beast? Or would you have to use live view? My 77 is always sharper with live view vs viewfinder.

Would love to use this on the Q!
Thanks
barondla

krazykat · 03-15-2016, 05:29 PM

Given the tenor of the conversation thus far, I also think you should buy it.

Otherwise you'll always have that nagging feeling "What if I HAD bought it?"

**niceshot** · 03-15-2016, 05:52 PM

you know what you have to do.

**dtrego** · 03-15-2016, 05:56 PM - **1 Like**

Not sure how viable of an option this may be, but kehoutlet on ebay has the Vivitar 135 f/1.5 for a BIN price of $1288.99 (including a Canon FD T-mount!). It's at least something of a known quality, plus you'd have almost enough left over for a K-1 - think of it as getting a similar heavy, manual focus, manual aperture lens, but with the K-1 for free!

**Clinton** · 03-16-2016, 07:40 PM

@dtrego I looked at the quality of this lens a while ago, and meh... maybe for $300 but not $1300

**luftfluss** · 03-16-2016, 08:15 PM

@Clinton do you know if Mitakon would be willing to re-fit a different mount on the lens, like Sigma does? I would imagine that would increase resale value.

**barondla** · 03-16-2016, 08:43 PM

@clinton know you aren't interested in the Vivitar, but I was surprised to find a site that lists every known appearance of this lens. They show a pic of each lens. I find that amazing. There are so few of them!

Vivitar Professional 135mm f/1.5 - Camera-wiki.org - The free camera encyclopedia
Thanks
barondla

Think how rare the Mitakon 135 1.4 in Pentax mount will be.

**maxfield_photo** · 03-17-2016, 12:30 PM

Originally posted by barondla

Think how rare the Mitakon 135 1.4 in Pentax mount will be.

If even three of these lenses end up being produced in K-mount, I'll be astonished. If I had the cash, I would definitely order one. Guess I'll just have to keep searching for an A* 135 1.8 that is within my budget.

Na Horuk · 03-17-2016, 01:07 PM

Originally posted by luftfluss

@Clinton do you know if Mitakon would be willing to re-fit a different mount on the lens, like Sigma does? I would imagine that would increase resale value.

Sigma doesn't do that. It only allows mount the be exchanged if they already, currently, sell the lens in both mounts. Sigma will never fit a K-mount on any Sigma lens that isn't officially sold by Sigma as K-mount as well. And I don't know about resale value, because if someone wants to buy a Nikon, then why would they look at the used market and choose the only lens that.. isn't Nikon mount. Seems like a hassle. Maybe T-mount solution, with various adapters supplied along with the lens, but even that seems unlikely.

**luftfluss** · 03-17-2016, 01:29 PM - **1 Like**

Originally posted by Na Horuk

Sigma doesn't do that. It only allows mount the be exchanged if they already, currently, sell the lens in both mounts. Sigma will never fit a K-mount on any Sigma lens that isn't officially sold by Sigma as K-mount as well.

What you've just posted is not incompatible with what I said. I just left out the part about the necessity of Sigma already producing the lens in a supported mount, as I figured Clinton already knew that detail. So yes, Sigma does that.

Quote:

And I don't know about resale value, because if someone wants to buy a Nikon, then why would they look at the used market and choose the only lens that.. isn't Nikon mount. Seems like a hassle. Maybe T-mount solution, with various adapters supplied along with the lens, but even that seems unlikely.

If only 100 of those lenses are produced - as Clinton speculated in a previous post - and a Nikon user wants to buy the lens but it is sold out in Nikon's native mount, then having the ability to re-fit with a different camera mount expands your customer base, increasing the chance of a sale.

**barondla** · 03-17-2016, 02:26 PM

maxfield_photo, years ago a Pentax Rep loaned me his A*85 f1.4, A*135 f1.8 and A*300 f2.8. Enjoyed them all and had a chance to buy any or all of them. I didn't. In my defense, I also shot Olympus OM and had 100 f2, 180 f2, 350 f2.8. Unfortunately Olympus went 4/3 sensor. So that moved me further in the Pentax camp. Regret not buying the 85 & 135.
Thanks
barondla

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03-13-2016, 11:45 PM	#31
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Depending on what you value in a lens, of course, but the K-mount (with full aperture control) 135/f2.0 SamYang does this for USD$486 at B&H (if resolution is a priority): : Bokeh is said to be quite good too. [I seem to be talking myself into buying this lens - sorry Clinton. ].

03-14-2016, 10:14 PM - 2 Likes	#32
Clinton Site Supporter Join Date: Feb 2010 Location: Salt Lake City, UT Photos: Gallery \| Albums Posts: 1,910 Original Poster	I think this chart is more telling: How much blur? - A visual background blur calculator It's interesting to compare the subject isolation to the 400/2.8

03-15-2016, 01:39 AM	#33
rawr Veteran Member Join Date: Jun 2009 Posts: 11,913	Originally posted by Clinton I think this chart is more telling: An interesting site. Very useful to run over one's lenses (or future lenses). I never imagined there would be such a wide 'blur gap' between 85/1.4 and 77/1.8. And 35/1.4 is a huge disappointment.

03-15-2016, 01:56 AM	#34
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,564	Come on buy it

03-15-2016, 06:00 AM	#35
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,714	Buy it. You are obviously interested in it. 135 f1.4 will allow some amazing images. Think of the creativity. It will be a very rare lens. If you hate it, you can sell it. If you sell it at a loss just look at it as renting the lens. A serious question. Are any DSLR optical systems calibrated well enough to accurately manual focus this beast? Or would you have to use live view? My 77 is always sharper with live view vs viewfinder. Would love to use this on the Q! Thanks barondla

03-15-2016, 05:29 PM	#36
krazykat Veteran Member Join Date: Aug 2010 Posts: 546	Given the tenor of the conversation thus far, I also think you should buy it. Otherwise you'll always have that nagging feeling "What if I HAD bought it?"

03-15-2016, 05:52 PM	#37
niceshot Site Supporter Join Date: Mar 2014 Location: NY Photos: Gallery Posts: 1,564	you know what you have to do.

03-15-2016, 05:56 PM - 1 Like	#38
dtrego Site Supporter Join Date: Dec 2007 Location: Grove City, OH, USA Posts: 105	Not sure how viable of an option this may be, but kehoutlet on ebay has the Vivitar 135 f/1.5 for a BIN price of $1288.99 (including a Canon FD T-mount!). It's at least something of a known quality, plus you'd have almost enough left over for a K-1 - think of it as getting a similar heavy, manual focus, manual aperture lens, but with the K-1 for free!

03-16-2016, 07:40 PM	#39
Clinton Site Supporter Join Date: Feb 2010 Location: Salt Lake City, UT Photos: Gallery \| Albums Posts: 1,910 Original Poster	@dtrego I looked at the quality of this lens a while ago, and meh... maybe for $300 but not $1300

03-16-2016, 08:15 PM	#40
luftfluss Site Supporter Join Date: Jun 2011 Location: NJ Photos: Gallery \| Albums Posts: 11,619	@Clinton do you know if Mitakon would be willing to re-fit a different mount on the lens, like Sigma does? I would imagine that would increase resale value.

03-16-2016, 08:43 PM	#41
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,714	@clinton know you aren't interested in the Vivitar, but I was surprised to find a site that lists every known appearance of this lens. They show a pic of each lens. I find that amazing. There are so few of them! Vivitar Professional 135mm f/1.5 - Camera-wiki.org - The free camera encyclopedia Thanks barondla Think how rare the Mitakon 135 1.4 in Pentax mount will be.

03-17-2016, 12:30 PM	#42
maxfield_photo Site Supporter Join Date: Mar 2011 Location: Cincinnati, OH Posts: 1,216	Originally posted by barondla Think how rare the Mitakon 135 1.4 in Pentax mount will be. If even three of these lenses end up being produced in K-mount, I'll be astonished. If I had the cash, I would definitely order one. Guess I'll just have to keep searching for an A* 135 1.8 that is within my budget.

03-17-2016, 01:07 PM	#43
Na Horuk Veteran Member Join Date: Feb 2012 Location: Slovenia, probably Photos: Gallery \| Albums Posts: 11,186	Originally posted by luftfluss @Clinton do you know if Mitakon would be willing to re-fit a different mount on the lens, like Sigma does? I would imagine that would increase resale value. Sigma doesn't do that. It only allows mount the be exchanged if they already, currently, sell the lens in both mounts. Sigma will never fit a K-mount on any Sigma lens that isn't officially sold by Sigma as K-mount as well. And I don't know about resale value, because if someone wants to buy a Nikon, then why would they look at the used market and choose the only lens that.. isn't Nikon mount. Seems like a hassle. Maybe T-mount solution, with various adapters supplied along with the lens, but even that seems unlikely.

03-17-2016, 01:29 PM - 1 Like	#44
luftfluss Site Supporter Join Date: Jun 2011 Location: NJ Photos: Gallery \| Albums Posts: 11,619	Originally posted by Na Horuk Sigma doesn't do that. It only allows mount the be exchanged if they already, currently, sell the lens in both mounts. Sigma will never fit a K-mount on any Sigma lens that isn't officially sold by Sigma as K-mount as well. What you've just posted is not incompatible with what I said. I just left out the part about the necessity of Sigma already producing the lens in a supported mount, as I figured Clinton already knew that detail. So yes, Sigma does that. Quote: And I don't know about resale value, because if someone wants to buy a Nikon, then why would they look at the used market and choose the only lens that.. isn't Nikon mount. Seems like a hassle. Maybe T-mount solution, with various adapters supplied along with the lens, but even that seems unlikely. If only 100 of those lenses are produced - as Clinton speculated in a previous post - and a Nikon user wants to buy the lens but it is sold out in Nikon's native mount, then having the ability to re-fit with a different camera mount expands your customer base, increasing the chance of a sale.

03-17-2016, 02:26 PM	#45
barondla Site Supporter Join Date: Sep 2006 Location: midwest, United States Photos: Gallery \| Albums Posts: 5,714	maxfield_photo, years ago a Pentax Rep loaned me his A85 f1.4, A135 f1.8 and A*300 f2.8. Enjoyed them all and had a chance to buy any or all of them. I didn't. In my defense, I also shot Olympus OM and had 100 f2, 180 f2, 350 f2.8. Unfortunately Olympus went 4/3 sensor. So that moved me further in the Pentax camp. Regret not buying the 85 & 135. Thanks barondla