Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
04-27-2014, 12:33 PM   #16
Pentaxian
Dartmoor Dave's Avatar

Join Date: Aug 2012
Location: Dartmoor, UK
Photos: Albums
Posts: 753
You speak truth, Pacerr. And personally Iím quite willing to buy a new DSLR and shim the screen to suit my own manual focus needs. I just wanted to make others aware that itís a job they might have to undertake before they start blaming their lenses.

Iíve been shooting with Pentax since 1980, and I stick with the brand because nobody else comes close to similar quality at a similar price. Although I confess that if I could afford that Rolls Royce and gold Rolex that you mentioned, Iíd probably buy a Leica.

04-27-2014, 01:05 PM   #17
Loyal Site Supporter
pacerr's Avatar

Join Date: Jan 2008
Location: Henry, TN
Photos: Gallery | Albums
Posts: 2,848
QuoteOriginally posted by Dartmoor Dave Quote
I could afford that Rolls Royce and gold Rolex that you mentioned, I’d probably buy a Leica.
Wouldn't we all be tempted, Dave?

As a po'-boy, though, I'm happy with my wall shelves full'a old Pentax stuff an' a few new DSLR's.
04-27-2014, 01:10 PM   #18
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 26,167
QuoteOriginally posted by pacerr Quote
Pentax COULD design and produce bodies such that each incremental manufacturing tolerance was miniscule and each unit had a custom, hand-fitted VF shim to accommodate residual assembly variations -- and they COULD replace all tooling weekly to maintain perfect tolerances and QA goals -- and they COULD conduct 100% QA sampling -- and those of us with a Rolls Royce with driver and a gold Rolex or three could maybe afford 'em.
Pentax used to produce cameras where the principals of Deming's teachings were applied and continuous improvement was the rule. Now days, the mantra is "good enough for the intended purpose" and the intended purpose is AF with a slight nod being given to non-AF use cases. Pity that the AF systems are poorly suited for fine focus.

Note that I reference the past both in this post and the one you quoted. The tolerances for the mirror box used to be sufficiently close that shimming was the exception rather than the rule. It was expected that the end user would be able to swap the screens on the Pentax MX without having to check the calibration against the focal plane. Proper manufacture of the mirror box and light path is not rocket science, it is simply not a current priority.

Those vintage cameras were mass produced, though with human labor rather than robotics. I own multiple film bodies (Pentax, Ricoh, and Minolta) and the viewfinders on each are spot on despite being built using manual processes.

Yes, I hear whistling with those old bodies and it is excellent whistling, but there is no pig in sight. With my modern AF dSLRs, they only whistle if prodded and massaged because whistling was not in their design spec.


Steve

Last edited by stevebrot; 04-27-2014 at 01:17 PM.
04-27-2014, 01:11 PM   #19
Loyal Site Supporter
ivanvernon's Avatar

Join Date: Oct 2012
Location: Medina, OH
Photos: Albums
Posts: 1,565
QuoteOriginally posted by kh1234567890 Quote
+1

A well set up good focusing screen, such as the Canon EE-S from focusingscreen.com, makes all the difference. Since on APS sensor you are only using the centre area of old lenses, sharpness, distortion and CA are often as good or better than that of modern lenses. It is only the coatings and hence contrast and flare resistance that are sometimes worse. As for cost, there is no comparison - used old manual focus Pentax lenses can be ridiculously cheap.

Some of my shots taken with old Pentax lenses :

SMC Pentax M 50mm f1.4
SMC Pentax A 50mm f2/f1.7
SMC Pentax M 75-150mm f4
SMC Pentax M 80-200mm f4.5
SMC Pentax M 135m f3.5
Great photos and a real argument in favor of the old lenses.

04-27-2014, 01:35 PM   #20
Loyal Site Supporter
pacerr's Avatar

Join Date: Jan 2008
Location: Henry, TN
Photos: Gallery | Albums
Posts: 2,848
@ Steve

QuoteOriginally posted by stevebrot Quote
Note that I reference the past both in this post and the one you quoted.
Nuthin' personal, Steve -- you an' I've both been there. Just a POV for the record with the hope that some of the newer folks appreciate the marvelous advances of recent technology. The scope of the things we can do today with so little experience of the limits of past technology constantly amazes me.

H2
04-27-2014, 03:15 PM   #21
Senior Member
kentishrev's Avatar

Join Date: Jan 2014
Posts: 180
QuoteOriginally posted by kh1234567890 Quote

Some really wonderful pictures here - particularly like the M Prime selections. Thank you for sharing.
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!
f/2.8, hsm, k-mount, lenses, pentax, pentax lens, sigma, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Which camera for old manual lenses? micromacro Troubleshooting and Beginner Help 58 01-16-2014 05:04 PM
Using manual old K mount Prime lenses on a K5 Australian6 Troubleshooting and Beginner Help 6 04-27-2013 03:33 PM
Manual for old SMC Lenses 500 1000 1000reflex 135-600zoom RockvilleBob Pentax SLR Lens Discussion 4 03-21-2013 06:03 AM
645D with old manual lenses martinMK Pentax Medium Format 5 12-28-2012 02:53 PM
Pentax Km and old manual lenses: SMC Takumars & Tamron Adaptall 2 lenses Kendrick Troubleshooting and Beginner Help 10 04-14-2010 03:23 AM



All times are GMT -7. The time now is 05:50 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