Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
possible eBay bargain - K 1.2 50mm
Posted By: johnyates, 04-21-2013, 12:48 PM

SMC Asahi Pentax Camera 7040385 Lens 1204911 N Flash N Bag N Camera Cover 35mm | eBay

The poster has no idea what he has.

Six hours left, 13 bids, price so far $67.
Views: 1,837
04-21-2013, 09:24 PM   #16
MegaPower's Avatar

Join Date: May 2010
Location: Hong Kong / Irvine, CA
Photos: Gallery | Albums
Posts: 564
The ending price is very good.
Had the K50/1.2 but sold it.

I don't find f/1.2 is brighter than f1.4 at night.

04-21-2013, 09:54 PM   #17
Site Supporter
vagrant10's Avatar

Join Date: May 2007
Location: portland
Photos: Albums
Posts: 1,361
QuoteOriginally posted by monochrome Quote
I had one for about a year. I had a Buy/Try/Sell fetish where I wanted to have every legendary Pentax MF lens I could never afford when they were new, at least have them for a while, so I would know I had. I sold it because I didn't want to have that much money tied up in one lens. It was either only the K50/1.2 or no K50/1.2 and many other 50's.

IMHO (and I will likely attract contrary opinion here) the f/1.2 merely allows you a slightly thinner DoF (@10ft on 35mm film, 0.86 feet vs. 1.02 ft for f/1.4), so your subject can be slightly closer to OOF foreground and background elements and thus achieve isolation or the 3D effect in more settings (closer to backgrounds, for instance). In my case it was very difficult to achieve necessary critical focus in an APSc viewfinder (because I have old eyes and an eye disease), where you only get a tiny bit more than 6" of DoF with either lens at 10 ft. At 5 ft you get about an inch with both lenses, so it is really neither easier nor harder to use the f/1.2 lens than the f/1.4.

On APSc I thought the CoC was so thin wide open (0.02mm) that it wasn't really useable. I'm sure the lens was better in this regard on 135 film. I tend to do my best with bokeh at f/5.6, which is also where most of my lenses get really good. At 10 feet @ f/5.6 you get about 2.75 ft APSc and 4.25ft 135. The standard I was taught is:
  • 100mm lens, 10 feet @ f/5.6 on 135 = 1 foot DoF
The actual quality of the OOF highlights is more the result of the specific lens design, the glass and the number of aperture leaves, whatever the largest aperture of the lens.

I still believe the real advantage of the f/1.2 lenses is low light focusing.
Personally, I find the real draw to the 1.2's are how they render things. They just have a different look to them, almost dreamy and others have called them painterly. I have 1.4's also, but I do like the unique look of the 1.2's.
Others have also noted that a 1.2 shot at 1.4 will be sharper than a 1.4 at 1.4 or even at 2.0. So if you need to shoot with a wide aperture like 1.4, a 1.2 could give you results that are more in line with what the photographer wants.

Here's the 1.2 lens club thread which has some great shots from the Pentax as well as the Cosinas:
04-22-2013, 01:54 AM   #18
Moderator PEG Judges
Kerrowdown's Avatar

Join Date: Aug 2008
Location: Highlands of Scotland.
Photos: Gallery
Posts: 32,706
QuoteOriginally posted by TropicalMonkey Quote
If f/1.2 has such huge merits
The fact your asking, I guessing you don't own one.

There is just something about them, if you get a chance to handle one at some point, you'll hopefully see what I mean.
04-22-2013, 05:44 AM   #19

Join Date: Nov 2008
Location: Bangalore
Photos: Gallery
Posts: 2,450
QuoteOriginally posted by TropicalMonkey Quote
What is so big deal about f/1.2? You can get f/1.4 much cheaper (K version). Only difference being in the bokeh effect, would this f/1.2 be so much better than currently available AF/1.4?
If f/1.2 has such huge merits why is Pentax not releasing a newer version?
Mostly bragging rights!!!

04-22-2013, 07:42 AM   #20
Site Supporter

Join Date: Oct 2011
Location: Aylesbury, Bucks
Photos: Albums
Posts: 492
QuoteOriginally posted by MegaPower Quote
The ending price is very good.
Had the K50/1.2 but sold it.

I don't find f/1.2 is brighter than f1.4 at night.
This may explain why:
DxOMark - F-stop blues
04-22-2013, 09:13 AM   #21
chickentender's Avatar

Join Date: Jan 2008
Location: Seattle, WA
Photos: Gallery | Albums
Posts: 1,993
Was this genuinely an F/1.2 or was it just an F/2 as originally posted? If the former, that really was quite the deal. I missed this entirely.
04-22-2013, 10:04 AM   #22
Loyal Site Supporter
monochrome's Avatar

Join Date: Mar 2008
Location: Kirkwood (St. Louis) MO
Photos: Gallery | Albums
Posts: 20,426
The (very dark) photo of the beauty ring showed it is a SMC Pentax 1:1.2 50mm. Seller never mentioned the actual lens description anywhere in the title or text.
04-22-2013, 01:35 PM   #23
Site Supporter
Checking...jono's Avatar

Join Date: Jan 2012
Location: Northeastern Minnesota
Photos: Gallery | Albums
Posts: 716
QuoteOriginally posted by monochrome Quote
The (very dark) photo of the beauty ring showed it is a SMC Pentax 1:1.2 50mm. Seller never mentioned the actual lens description anywhere in the title or text.
I have picked up a bargain or two because of that.

04-22-2013, 01:44 PM   #24
Veteran Member
Docrwm's Avatar

Join Date: Sep 2010
Location: Somewhere in the Southern US
Photos: Gallery | Albums
Posts: 11,275
You did the seller a big favor by posting that link here.

  • 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!
camera, ebay, pentax deals
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pentax K 50mm f1.2 (final price drop before ebay) Rorschach Sold Items 9 11-28-2011 12:06 PM
For Sale - Sold: SMC Takumar 1.4 50mm Bargain! dcshooter Sold Items 7 08-14-2011 09:01 AM
Pentax A 50mm f 1.2 on Ebay David Pentax SLR Lens Discussion 30 01-12-2011 05:35 PM
Pentax A 50mm 1.2 special on ebay Phaser Pentax SLR Lens Discussion 9 01-26-2010 11:33 PM

All times are GMT -7. The time now is 02:19 AM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]