Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-06-2008, 09:06 PM   #1
Senior Member
shaolin95's Avatar

Join Date: Jan 2008
Posts: 201
Please post comparisons images between the 18-55mm kit lens, SMC A 1.7 and 2.0 50mm.

Hi!
I am thinking on getting a 50mm more than likely a 1.7 A 50mm or maybe a 2.0 A 50mm but I would love to see images of both PLUS the kit lens to see the differences and advantages that I will have with either.
Thanks for the help.

02-07-2008, 07:07 AM   #2
Veteran Member




Join Date: Dec 2006
Location: Outside of Philly
Posts: 1,564
I'm sure the primes would be a bit sharper at 50mm@f/5.6 then the kit lens (50mm@f/5.6 as well), BUT I would think the bigger advantage of the primes is the ability to shoot faster than f/5.6.
02-07-2008, 07:47 AM   #3
Veteran Member
Jodokast96's Avatar

Join Date: Oct 2007
Location: Erial, NJ USA
Photos: Gallery | Albums
Posts: 2,133
QuoteOriginally posted by egordon99 Quote
I'm sure the primes would be a bit sharper at 50mm@f/5.6 then the kit lens (50mm@f/5.6 as well), BUT I would think the bigger advantage of the primes is the ability to shoot faster than f/5.6.
Hell, my 1.7 is sharper wide open let alone at f/5.6. The only advantage of the 18-55 is that it goes wider than 50mm and has AF. I'll see if I can dig up some comparison shots, but I'll be busy the next few days.
02-07-2008, 08:47 AM   #4
Senior Member
shaolin95's Avatar

Join Date: Jan 2008
Posts: 201
Original Poster
So it helps a lot when shooting at low light without having to use slow shutter speed...thats is one big advantage correct? I am learning so I may be confusing terms. :-)
I will check back for those images.

02-07-2008, 09:05 AM   #5
Pentaxian
Moderator Emeritus




Join Date: May 2007
Location: Edmonton Alberta, Canada
Photos: Gallery | Albums
Posts: 10,648
The 50mm 1.7 will be the fastest lens in low light. That is correct. Then followed by the 50 F2 an the slower lens will be the kit lens. The zoom will also be a little softer.

Now this isn't a totally fair comparison since the images are of different subjects and speed/f stops. But to save some time waiting for posts (plus the space here is limited) have a look at these images:
50mm A f2:
PENTAX Photo Gallery

50mm A f1.7:
PENTAX Photo Gallery

And the 18-55 Kit lens:
PENTAX Photo Gallery

So as you can see, in the right hands and a decent understanding of shooting technique, you can get good results from all 3 lenses. The 1.7 is clearly the best and fastest lens but the kit lens has the added avantage of a zoom wide to mid telephoto focal range. It's about 2 stops slower at the wide end and about 3 at the long end.
02-07-2008, 04:33 PM   #6
Veteran Member
Jodokast96's Avatar

Join Date: Oct 2007
Location: Erial, NJ USA
Photos: Gallery | Albums
Posts: 2,133
No need for me to dig up any shots now, unless I want to embarass myself. If you've got the extra few bucks laying around and don't mind manual focus, it's hard to go wrong with either 50mm. The 1.7 seems to be the sweet spot between the 50s with regards to IQ, availability, and price. But there doesn't seem to be anything wrong with the 2.0 either, just a tad slower.
02-07-2008, 04:39 PM   #7
Pentaxian
jsherman999's Avatar

Join Date: Dec 2007
Photos: Gallery
Posts: 8,228
QuoteOriginally posted by Jodokast96 Quote
No need for me to dig up any shots now, unless I want to embarass myself. If you've got the extra few bucks laying around and don't mind manual focus, it's hard to go wrong with either 50mm. The 1.7 seems to be the sweet spot between the 50s with regards to IQ, availability, and price. But there doesn't seem to be anything wrong with the 2.0 either, just a tad slower.



How timely, someone happens to have an SMC-A 50mm f/2 for sale in the marketplace for $35 + shipping...


Oh wait, that's me!






.
02-07-2008, 04:41 PM   #8
Senior Member
shaolin95's Avatar

Join Date: Jan 2008
Posts: 201
Original Poster
QuoteOriginally posted by Jodokast96 Quote
No need for me to dig up any shots now, unless I want to embarass myself. If you've got the extra few bucks laying around and don't mind manual focus, it's hard to go wrong with either 50mm. The 1.7 seems to be the sweet spot between the 50s with regards to IQ, availability, and price. But there doesn't seem to be anything wrong with the 2.0 either, just a tad slower.
Actually I would still love to see some same image with both lenses comparison. :-)

02-07-2008, 04:45 PM   #9
Inactive Account




Join Date: Nov 2007
Location: North Brunswick, NJ
Posts: 473
I've compared the F 50/1.7, the M 50/1.7, and the DA 18-55/3.5-5.6, and the F 50/1.7 is the sharpest followed by the M 50/1.7. Yes, the A and M lenses have only manual focus, but it's up to you to decide if that's a disadvantage. I wanted autofocus, which is why I sold two lenses to purchases my F 50/1.7. I don't have a problem with manual focus. I actually use my F 50/1.7 in MF most of the time. It's just convenient to have for those special times. See what you like and make a decision based on that, but there's no doubt that the either of those primes are faster and sharper than the kit lens at comparable aperture settings. Also, since I prefer prime lenses, I found the F 50/1.7 and M 50/1.7 much more pleasurable to shoot with than the kit lens.
02-07-2008, 04:46 PM   #10
Pentaxian
jsherman999's Avatar

Join Date: Dec 2007
Photos: Gallery
Posts: 8,228
QuoteOriginally posted by shaolin95 Quote
Actually I would still love to see some same image with both lenses comparison. :-)

As of today I no longer have my 18-55 or my A-50 f/1.7, so I can't post any comparison shots taken of the same subject, but you may find this "50mm shootout page" a fun read, I did. It's like the final-four brackets except with 50mm's:

the Normal Lens Shootout Photo Gallery by Sean Carpenter at pbase.com


.
02-07-2008, 06:20 PM   #11
Senior Member
Mikhail's Avatar

Join Date: Jul 2007
Location: York Region, ON
Posts: 277
Well here are some comparison shots between the DA 18-55mm and the Pentax-M F1.7. The name tells you what lens and what aperture.
There is a clear IQ difference between the two, maybe not as much as you would expect, but this lens is also older than me! The 50mm F1.7 that is, the DA is virtually brand new!
Also as you can see from the F1.7 and F5.6 (best aperture for 50mm) there is a HUGE jump in IQ. And Im not saying there is more areas in DOF that makes it better, the parts that are equally in focus , far right of the crops , clearly shows the jump.

Pentax-M F1.7


DA F5.6


Pentax-M F5.6


DA F8


Pentax-M F8


DA F22


Pentax-M F22


Thanks
02-07-2008, 06:40 PM   #12
Veteran Member
nathancombs's Avatar

Join Date: Jul 2007
Location: Waysboro va
Photos: Gallery
Posts: 517
QuoteOriginally posted by Mikhail Quote
Well here are some comparison shots between the DA 18-55mm and the Pentax-M F1.7. The name tells you what lens and what aperture.
There is a clear IQ difference between the two, maybe not as much as you would expect, but this lens is also older than me! The 50mm F1.7 that is, the DA is virtually brand new!
Also as you can see from the F1.7 and F5.6 (best aperture for 50mm) there is a HUGE jump in IQ. And Im not saying there is more areas in DOF that makes it better, the parts that are equally in focus , far right of the crops , clearly shows the jump.

Pentax-M F1.7


DA F5.6


Pentax-M F5.6


DA F8


Pentax-M F8


DA F22


Pentax-M F22


Thanks
in your test the DA looks over all sharper BUT i find that the M 1.7 is sharper a cross the board ( not that i am nocking the kit lens ) i will look and see if i can find a comparison i for get witch lens i use when i am shooting LOL
02-07-2008, 06:54 PM   #13
Veteran Member
nathancombs's Avatar

Join Date: Jul 2007
Location: Waysboro va
Photos: Gallery
Posts: 517
Kit K100D



M 1.7 K1000



ok not the best Vs but i PS all my portrets lol
02-07-2008, 06:56 PM   #14
Senior Member
shaolin95's Avatar

Join Date: Jan 2008
Posts: 201
Original Poster
Very interesting comparison....at 5.6 I see the M looks sharper than the Kit but what surprised me is that at 1.7 the M looks soft and not only on the left but also the right side...maybe its just me though.
Thanks a lot for this btw. :-)
02-07-2008, 07:00 PM   #15
Senior Member
Mikhail's Avatar

Join Date: Jul 2007
Location: York Region, ON
Posts: 277
QuoteOriginally posted by nathancombs Quote
in your test the DA looks over all sharper BUT i find that the M 1.7 is sharper a cross the board ( not that i am nocking the kit lens ) i will look and see if i can find a comparison i for get witch lens i use when i am shooting LOL
Ohh? I didnt think the DA was sharper in any of the pictures.. which one exactly where you refering to?

Thanks
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!
18-55mm kit, 50mm, images, k-mount, kit, lens, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: K10D with original kit 18-55mm, SMC-M 50mm f2, and Tokina 28-200mm (US) Ahab Sold Items 3 07-11-2010 07:56 AM
For Sale - Sold: Pentax kit lens SMC DA 18-55mm 3.5-5.6 AL (II) (US) awo425 Sold Items 2 06-17-2010 06:34 AM
For Sale - Sold: Pentax SMC DA 18-55mm F3.5-5.6 Kit Lens frank Sold Items 0 01-24-2010 04:41 AM
For Sale - Sold: FA: Pentax SMC-DA 18-55mm Kit Lens HogRider Sold Items 0 09-30-2007 04:09 PM



All times are GMT -7. The time now is 02:29 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