Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-19-2011, 12:48 PM   #1
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
DA* 55mm/1.4 vs K/A 50mm/1.2

I've been trying to find comparison shots between the DA* 55/1.4 and either the K 50/1.2 or A 50/1.2 but my Google-fu is too weak today. From what I've read the 55 has got busier bokeh but is more contrasty and sharper. The 50/1.2s have really creamy bokeh but are of course hard to focus and perhaps a bit less contrasty wide open.

So, is anyone here lucky enough to own both and willing to do some test shots and perhaps some opinions on the differences between them.

01-19-2011, 05:34 PM   #2
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
QuoteOriginally posted by joakimfors Quote
I've been trying to find comparison shots between the DA* 55/1.4 and either the K 50/1.2 or A 50/1.2 but my Google-fu is too weak today. From what I've read the 55 has got busier bokeh but is more contrasty and sharper. The 50/1.2s have really creamy bokeh but are of course hard to focus and perhaps a bit less contrasty wide open.

So, is anyone here lucky enough to own both and willing to do some test shots and perhaps some opinions on the differences between them.
hmmm...you have practically have read much about the comparisons between those lenses, so I don't think it would make any difference in opinions and test shots as well. what you have already read has been practically accurate eversince.
01-19-2011, 06:28 PM   #3
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
Original Poster
Yeah, but I want ze pretty pictures.

It would just be nice to really see the difference in a 1:1 comparison.
01-19-2011, 06:51 PM   #4
Veteran Member
dgaies's Avatar

Join Date: Oct 2009
Location: Maryland / Washington DC
Posts: 3,917
QuoteOriginally posted by joakimfors Quote
Yeah, but I want ze pretty pictures.

It would just be nice to really see the difference in a 1:1 comparison.
I can't promise I'll be able to get to it right away, but what kind of shots did you have in mind?

01-19-2011, 07:09 PM   #5
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
Original Poster
That would be nice, thanks! I'd be most interested in busy backgrounds that can cause ugly bokeh and perhaps center sharpness wide open.
01-19-2011, 07:13 PM   #6
Veteran Member
dgaies's Avatar

Join Date: Oct 2009
Location: Maryland / Washington DC
Posts: 3,917
QuoteOriginally posted by joakimfors Quote
That would be nice, thanks! I'd be most interested in busy backgrounds that can cause ugly bokeh and perhaps center sharpness wide open.
Are you more interested in a comparison at f/1.4 (to keep things equal) or both wide open? (or both)
01-19-2011, 07:33 PM   #7
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
Original Poster
Both wide open. I believe the DoF is equal at the same distance. But if it is not too much trouble then some stopped down shots would be nice too.
01-19-2011, 08:03 PM - 1 Like   #8
Veteran Member
dgaies's Avatar

Join Date: Oct 2009
Location: Maryland / Washington DC
Posts: 3,917
QuoteOriginally posted by joakimfors Quote
Both wide open. I believe the DoF is equal at the same distance. But if it is not too much trouble then some stopped down shots would be nice too.
True, the DOF should be the same for 55mm @ f/1.4 vs 50mm @ f/1.2.

So here's a quick test shot. Not the busiest bokeh, but I'll see if I can come up with something better tomorrow.

DA*55/1.4 @ f/1.4, 1/15s, iso200


A50/1.2 @ f/1.2, 1/10s, iso200


A50/1.2 @ f/1.4, 1/15s, iso200


EDIT: added K50/1.4 @ f/1.4, 1/15s, iso200



Last edited by dgaies; 01-19-2011 at 09:46 PM.
01-19-2011, 08:09 PM   #9
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
Original Poster
Wow thanks! The 50/1.2 is quite a bit more "creamy". Didn't think the difference would be that noticeable.
01-19-2011, 08:10 PM   #10
Pentaxian
twitch's Avatar

Join Date: Nov 2009
Posts: 4,571
Wow, now I see why people like the A 1.2 so much.
01-19-2011, 08:16 PM   #11
Veteran Member
dgaies's Avatar

Join Date: Oct 2009
Location: Maryland / Washington DC
Posts: 3,917
QuoteOriginally posted by joakimfors Quote
Wow thanks! The 50/1.2 is quite a bit more "creamy". Didn't think the difference would be that noticeable.
You're welcome.

I'd agree. The 50/1.2 is a bit "creamier" overall, but the DA*55 is quite decent as well. I'll try to come up with a more challenging shots (with a busier background) and take a few more shots tomorrow.

I see you have the 50/1.2 now. Are you thinking about replacing it with the DA*55? I'm pretty much trying to answer that question myself, although in my case I'm trying to decide which fast lenses to keep between the FA43/1.9, A50/1.2, K50/1.4, FA50/1.7 and DA*55. Not really a bad lens in the bunch
01-19-2011, 08:20 PM   #12
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
Original Poster
Yeah. I was set on the DA* 55 but then the the K50/1.2 showed up on an auction site and in a moment of weakness I bought it. It is a beautiful piece of engineering and even my 5DmkII wielding friend was quite envious when I showed it and what it could do. However, the DA* has some things going for it as well such as AF and weather resistance.

These pictures will sure help make it easier to decide if I should "side grade" to a DA* 55 or keep the K without having to get both first… which I'm sure is what I'll end up doing.

Edit: Some 100% crops would be nice whenever you have the time. My K50 is sharper than I thought it would be but I'm guessing the DA* can give it a run for its money.

Last edited by joakimfors; 01-19-2011 at 08:22 PM. Reason: Crop request and speeling
01-19-2011, 08:31 PM   #13
Veteran Member
dgaies's Avatar

Join Date: Oct 2009
Location: Maryland / Washington DC
Posts: 3,917
QuoteOriginally posted by joakimfors Quote
Yeah. I was set on the DA* 55 but then the the K50/1.2 showed up on an auction site and in a moment of weakness I bought it. It is a beautiful piece of engineering and even my 5DmkII wielding friend was quite envious when I showed it and what it could do. However, the DA* has some things going for it as well such as AF and weather resistance.

These pictures will sure help make it easier to decide if I should "side grade" to a DA* 55 or keep the K without having to get both firstů which I'm sure is what I'll end up doing.

Edit: Some 100% crops would be nice whenever you have the time. My K50 is sharper than I thought it would be but I'm guessing the DA* can give it a run for its money.
It's certainly a tough call between them, which is why I still have both and can't make up my mind

Here are some quick 100% crops. I wouldn't take too much stock in these as I can't guarantee that the focus was identically good on each shot. That said, it would appear from these crops, that the DA*55 is sharper at f/1.4 than the A50/1.2.

100% crop from DA*55 @ f/1.4


100% crop from A50/1.2 @ f/1.2


100% crop from A50/1.2 @ f/1.4
01-19-2011, 08:44 PM   #14
Senior Member
joakimfors's Avatar

Join Date: Jan 2009
Location: Lund, Sweden
Posts: 237
Original Poster
More detail visible on the DA* 55 shot for sure. The 50/1.2s are quite sharp too, it's just that the sharpness is covered in a cloud of bokeh blur. Perfect for portraits, not quit as good for pixel peeping.
01-19-2011, 09:49 PM   #15
Veteran Member
dgaies's Avatar

Join Date: Oct 2009
Location: Maryland / Washington DC
Posts: 3,917
QuoteOriginally posted by joakimfors Quote
More detail visible on the DA* 55 shot for sure. The 50/1.2s are quite sharp too, it's just that the sharpness is covered in a cloud of bokeh blur. Perfect for portraits, not quit as good for pixel peeping.
I went back and took a couple more shots, using LV at 10x to make sure I focused as well as possible (manually with both the DA*55 and A50/1.2). It does seem the DA*55 captures more detail a f/1.4 than the A50/1.2 at f/1.4.

Also, just for fun, I took a shot with the K50/1.4. I repositioned the tripod back as best I could, but it wasn't exactly in the same place. Anyway, I threw that shot in with the original shots. Looks pretty good, somewhere in between the A50/1.2 and DA*55 (I think).

Last edited by dgaies; 01-20-2011 at 05:31 AM.
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!
bokeh, contrasty, da*, k-mount, pentax lens, shots, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Pentax M 28mm 3.5, Sears 55mm 1.4, Ricoh P 50mm 1.7, Chinon 50mm 1.9 (Worldwid causey Sold Items 17 01-08-2011 11:14 AM
For Sale - Sold: K10D + grip + 18-55mm, DA 12-24mm, FA 50mm/1.7, D FA 50mm/2.8 macro (Worldwide dgaies Sold Items 6 07-17-2010 03:46 PM
For Sale - Sold: Pentax *ist DL, FA 50mm f/1.4, DFA 100mm f/2.8 macro, DA 18-55mm, A 50mm f/2.0 chemxaj Sold Items 14 05-31-2010 09:34 AM
For Sale - Sold: A 50mm 1.7; M 28mm 2.8; M 50mm 1.4; 18-55mm II; Sigma AF 24mm 2.8 II. thomasxie Sold Items 4 03-05-2010 06:33 AM
50mm/1.4 vs 55mm/1.8 baw Pentax SLR Lens Discussion 10 02-14-2007 06:07 PM



All times are GMT -7. The time now is 07:23 PM. | 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