Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-05-2011, 08:49 PM   #46
Inactive Account




Join Date: Nov 2008
Location: Canada
Photos: Gallery
Posts: 188
If you want sharp - get a macro lens. As simple as that.
The only exception ( without spending $$$) is good old M 28/3.5.
And perhaps 50/1.7

03-06-2011, 04:16 PM   #47
Site Supporter
GeneV's Avatar

Join Date: Oct 2008
Location: Albuquerque NM
Photos: Albums
Posts: 9,767
QuoteOriginally posted by mika. Quote
Gene, I just came across your review of the Ultron. Looks like we're pretty much in agreement. Although, giving the lens a 10 out of 10, I think, is rather miserly.
I had trouble thinking of an improvement.
I guess it could be f/1.4 instead of 2. It could autofocus and still have a buttery manual focus. It could pick ideal subjects for you.
03-06-2011, 06:11 PM   #48
Pentaxian
jeffshaddix's Avatar

Join Date: Jun 2010
Location: Albuquerque, NM
Posts: 1,371
I've been amazed at the sharpness of the Tokina 90mm 2.5 macro even having once owned an FA 43. Even wide open the Tokina is ludicrous sharp. The 50/2.8 macro lenses put up quite a fight as well.

I think in general macros will provide the most critical sharpness if that's what you're looking for. There may be some exceptions (like the Ultron and the FA43).
03-06-2011, 06:29 PM   #49
Pentaxian
Digitalis's Avatar

Join Date: Mar 2009
Location: Adelaide.
Posts: 8,612
QuoteOriginally posted by civiletti Quote
Stopped down to f8, the A50 f2 is sharper than the A50 f1.4.
And at f/8 the 50mm f/1.2 is sharper than both. Though on my Leica M9 I have trouble telling the difference between the FA43 and my Leica summilux 50mm f/1.4 ASPH at f/4. And the summilux is considered to be the greatest 50mm lenses ever made.

03-06-2011, 06:32 PM   #50
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
QuoteOriginally posted by jeffshaddix Quote
I've been amazed at the sharpness of the Tokina 90mm 2.5 macro even having once owned an FA 43. Even wide open the Tokina is ludicrous sharp. The 50/2.8 macro lenses put up quite a fight as well.

I think in general macros will provide the most critical sharpness if that's what you're looking for. There may be some exceptions (like the Ultron and the FA43).
the Sigma 70 is one heck of a sharp lens as well. it may have bested the old FA50/2.8. I can only imagine how better the Sigma 150 is, especially if has been considered sharper than the 70.
03-06-2011, 06:36 PM   #51
Pentaxian
8540tomg's Avatar

Join Date: Feb 2008
Location: Waterloo, Ontario
Photos: Gallery
Posts: 4,446
QuoteOriginally posted by slawek Quote
If you want sharp - get a macro lens. As simple as that.
The only exception ( without spending $$$) is good old M 28/3.5.
And perhaps 50/1.7
I'm with Slawek on this one. A macro lens will almost always be your sharpest lens.

Tom G
05-05-2011, 02:00 AM   #52
Pentaxian
Digitalis's Avatar

Join Date: Mar 2009
Location: Adelaide.
Posts: 8,612
the Pentax FA*200mm f/4 ED macro is absolutely superb, also the Pentax FA31mm f/1.8 is another outstanding lens.

05-05-2011, 02:19 AM   #53
Veteran Member




Join Date: Jan 2010
Location: Southern England
Posts: 495
I'm afraid the Pentax 50/2 is is a rather soft lens, so you won't need to look far in order to better it. However, if you want REALLY sharp on a budget and don't mind manual focus, I would suggest the Ricoh Rikenon 50/2 (preferably not the -P version, I suppose) and the S-M-C Takumar (or Pentax K) 35/3.5.

Or maybe the Pentax 50/1.7 or 50/1.4 (or 50/1.2, but they're rare and expensive).

05-05-2011, 03:31 AM   #54
Pentaxian
Clavius's Avatar

Join Date: Feb 2011
Location: De Klundert
Photos: Gallery
Posts: 4,115
I'm a bit surprised the 35mm DA LTD Macro hasn't been mentioned. Since I own it, I stopped using my FA 43, because I find the 35 even charper. I ended up selling my FA 43 about two months ago.
05-05-2011, 04:17 AM   #55
Site Supporter
Aristophanes's Avatar

Join Date: Jul 2008
Location: Dartmouth, Nova Scotia
Photos: Albums
Posts: 3,791
I agree. Macros are champs of sharp followed by the Ltd's.

QuoteOriginally posted by Clavius Quote
I'm a bit surprised the 35mm DA LTD Macro hasn't been mentioned. Since I own it, I stopped using my FA 43, because I find the 35 even charper. I ended up selling my FA 43 about two months ago.
05-05-2011, 10:21 AM   #56
Veteran Member
Frogfish's Avatar

Join Date: Dec 2009
Location: Shanghai
Posts: 4,490
QuoteOriginally posted by Clavius Quote
I'm a bit surprised the 35mm DA LTD Macro hasn't been mentioned. Since I own it, I stopped using my FA 43, because I find the 35 even charper. I ended up selling my FA 43 about two months ago.
QuoteOriginally posted by Aristophanes Quote
I agree. Macros are champs of sharp followed by the Ltd's.
I'm sorry but you are both wrong.

The DA 35 Ltd is a very sharp lense but isn't even near the 43 Ltd at ANY aperture, here are the MTF figures that prove it :

35 Ltd

Pentax SMC DA 35mm f/2.8 Limited macro - Review / Test Report - Analysis

43 Ltd

http://www.photozone.de/pentax/125-pentax-smc-fa-43mm-f19-limited-review--test-report?start=1
05-05-2011, 10:37 AM   #57
Veteran Member
Eruditass's Avatar

Join Date: Jul 2009
Location: Pittsburgh, PA
Photos: Gallery | Albums
Posts: 2,206
Macro lenses tend to be the sharpest, especially perceived sharpness at the borders due to flat focus fields, though the 31mm and 43mm can be just as good or better than some if you take into account field curvature.

Last edited by Eruditass; 05-05-2011 at 10:42 AM.
05-05-2011, 12:45 PM   #58
New Member




Join Date: May 2011
Posts: 7
Ultron 50
05-05-2011, 07:30 PM   #59
Veteran Member
RioRico's Avatar

Join Date: Jun 2008
Location: Limbo, California
Posts: 11,264
Apos Elgeet Colorstigmat 90/4.5
Novoflex Noflexar 105/3.5
Ilex Solar Anastigmat 140/4.5

Primes be damned. Enlarger lenses rule!
05-05-2011, 08:14 PM   #60
Veteran Member




Join Date: Aug 2010
Location: Winnipeg MB
Photos: Gallery
Posts: 346
A sharp lens but with shallow DOF is useless to me. I've seen enough macro shots but extremely few could bring the entire tiny insect in focus. I am looking for cameras with shorter lens-to-sensor distance such as Sony NEX. I am so used to looking at electron micrograph with large DOF.
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!
k-mount, lens, lenses, pentax, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Sharpest lens in Pentax Mount HoBykoYan Pentax SLR Lens Discussion 27 06-30-2010 01:56 PM
Sharpest Lens you own? Eagle_Friends Pentax SLR Lens Discussion 176 05-14-2010 05:37 AM
Which fast (better than F2) AF lens is sharpest at f1.7. pcarfan Pentax SLR Lens Discussion 4 10-01-2009 02:35 PM
Pentax 67 Sharpest Lens desertscape Pentax Medium Format 6 06-07-2009 05:58 AM
Sharpest lens, any brand, ever? falconeye Pentax SLR Lens Discussion 48 03-24-2009 04:27 PM



All times are GMT -7. The time now is 11:22 AM. | See also: NikonForums.com, CanonForums.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