Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-13-2010, 04:44 AM   #1
Junior Member




Join Date: Jan 2010
Posts: 27
k-x lens , kit 18-55mm f3.5-5.6 AL , what 50mm f1.4 can do over kit lens?

I have k-x kit lens18-55mm f3.5-5.6 AL ,

what 50mm f1.4 / f2.8 can do and 18-55 kit lens cant do it ?

I noticed many people use 50mm f1.4 or 2.8 , what are the advantages of this lens in order to buy it ?

I like to use my camera to landscapes, macro, family pictures, flowers, and i like it to be crystal clear ,will that lens worth it 300euro to buy it ?

01-13-2010, 05:15 AM   #2
Site Supporter




Join Date: Mar 2009
Location: Gladys, Virginia
Photos: Gallery
Posts: 16,213
The appeal of the 50 mm lenses is that they are the cheapest way to get a really wide aperture. The smaller the aperture number, the more light is allowed in. This lets you shoot with faster shutter speed in low light situations. The 50 will be much sharper than the kit lens at any of the same apertures. It is very sharp basically from f2 on. The other neat thing, is that any of the 50s will let you play around with shallow depth of field, something that the kit lens isn't really fast enough to do.

As to the things you like to shoot, the focal length is such that it probably wouldn't be very good at shooting macro and you can't focus close, so macro is out as well. Most people (I think) use them as portrait lenses and in low light situations in general.

As to whether or not it is worth it, a lot depends on what you think you want to do. One thing to try would be to fix your kit lens at 50mm and try shooting with it stuck there for a while. It would let you know if you like the focal length and would enjoy a prime at that distance.
01-13-2010, 08:38 AM   #3
Senior Member
TheTenaciousOne's Avatar

Join Date: Jul 2009
Location: Adelaide, SA, Australia
Photos: Gallery
Posts: 111
It looks like your fairly new to photography but i really recommend looking on this forums marketplace or ebay for a cheap manual 50mm prime. When i got my first 50mm (Pentax M 50mm 1.7 which i regretfully dont have anymore=( ) i was amazed at the obvious sharpness over the kit and the ability to shoot in low lights where the kit lens would have been much to slow to use hand held.
I personally wouldnt buy the FA50mm 1.4 new as its ridiculously expensive now and theres plenty of manual A and M lenses out there
01-13-2010, 09:03 AM   #4
Veteran Member




Join Date: May 2009
Location: Twin Cities, MN
Posts: 2,869
QuoteOriginally posted by TheTenaciousOne Quote
It looks like your fairly new to photography but i really recommend looking on this forums marketplace or ebay for a cheap manual 50mm prime. When i got my first 50mm (Pentax M 50mm 1.7 which i regretfully dont have anymore=( ) i was amazed at the obvious sharpness over the kit and the ability to shoot in low lights where the kit lens would have been much to slow to use hand held.
I personally wouldnt buy the FA50mm 1.4 new as its ridiculously expensive now and theres plenty of manual A and M lenses out there
For a first timer and someone new to photography (at least DSLRs) I would recommend getting and A series lens over an M - the M can only be used in manual mode, while the A series lenses are fully auto - essentially they communicate properly with the camera, the only requirement on your part is manual focus, which isn't too difficult.

You can find a 50mm F2 Pentax-A series typically well under $40 (the marketplace here, or on ebay) - it will get your feet wet and see if you enjoy using manual focus without breaking the bank by a long shot - it will also help you learn the use of an aperture ring (at the same time not REQUIRING it as an older M series lens would).

01-13-2010, 09:39 AM   #5
Junior Member




Join Date: Jan 2010
Posts: 27
Original Poster
So ,do you recomand 50mm F2 Pentax-A second hand abaut 40euro? A = auto ? i need to manual focus and aperture and other settings can be adjusted from camera settings? Can you give me a link with exact type so i know exacly what to buy for my K-x ?
thank you very much !

Last edited by crossing; 01-13-2010 at 09:46 AM.
01-13-2010, 09:47 AM   #6
Veteran Member




Join Date: May 2009
Location: Twin Cities, MN
Posts: 2,869
This is the Pentax-A 50mm F2 :Pentax Lens Review and Specification Database - 50mm F2

The Pentax-A 50mm F1.7 will be about double the price, but is worth it if that isn't too costly for you.

Regarding the lenses working with the camera. You got it right, you'll need to manual focus, but the camera can do everything else automatically. The A setting on these lenses mean that aperture information can be communicated between camera/lens. With the older M lenses this doesn't occur (still relatively easy to use, but they are a compromise from full camera/lens communication).

I don't know about european pricing, but for these lenses a dollar for dollar equivalent price is probably reasonable ($40 euros is probably on the high end for an F2, but I could be wrong).
01-13-2010, 10:02 AM   #7
Junior Member




Join Date: Jan 2010
Posts: 27
Original Poster
And a link for Pentax-A 50mm F1.7 please
01-13-2010, 10:10 AM   #8
Site Supporter
stevebrot's Avatar

Join Date: Mar 2007
Location: Vancouver (USA)
Photos: Gallery | Albums
Posts: 27,415
QuoteOriginally posted by crossing Quote
So ,do you recomand 50mm F2 Pentax-A second hand abaut 40euro? A = auto ? i need to manual focus and aperture and other settings can be adjusted from camera settings? Can you give me a link with exact type so i know exacly what to buy for my K-x ?
thank you very much !
I would buy the A 50/1.7 over the A 50/2. The f/2 version, while not inferior, is not as good optically. I believe there is a A 50/1.7 currently on the marketplace.

Regarding comments above regarding the 50mm lens and macro. While most "fast 50s" have only average close focus capabilities, they are an excellent choice for use with extension tubes or bellows.

Steve

(Have as more "fast 50s" than I have fingers to count them with...)

01-13-2010, 11:13 AM   #9
Veteran Member




Join Date: May 2009
Location: Twin Cities, MN
Posts: 2,869
QuoteOriginally posted by crossing Quote
And a link for Pentax-A 50mm F1.7 please
Your hand can only be held so much! At the top of the page you will find a button titled LENSES. Click on it, then Pentax Lens Reviews, follow that to A-series Primes and you will find everything you need.
01-13-2010, 11:33 AM   #10
Veteran Member




Join Date: Dec 2006
Location: Outside of Philly
Posts: 1,564
QuoteOriginally posted by crossing Quote
I have k-x kit lens18-55mm f3.5-5.6 AL ,

what 50mm f1.4 / f2.8 can do and 18-55 kit lens cant do it ?

I noticed many people use 50mm f1.4 or 2.8 , what are the advantages of this lens in order to buy it ?

I like to use my camera to landscapes, macro, family pictures, flowers, and i like it to be crystal clear ,will that lens worth it 300euro to buy it ?
The kit lens is f/5.6 at 50mm, the prime can open up to f/1.4. That's about the biggest and most important difference between the two.
01-13-2010, 11:59 AM   #11
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
And what that means is, in a given low light situation where the kit lens at f/5.6 could only give you a shutter speed of, say, 1/4" (almost compleletely unhandholdable, even with SR), the 50 at f/1.4 could give you 1/64" - piece of cake to handhold. i definitely recommend you do a search on the terms aperture, shutter speed, and ISO to learn how these relate and why aperture is important. Or get a book on photography.

I would also recommend the f/1.7 versions of the lens over the others - they are noticeably and significantly sharper than the f/2 versions, and significantly cheaper than the f/1.4 versions. When searching for the lens, just be looking for the term "Pentax-A" (many would combine the focal length, as in "A50"; that's just another way of referring to the same lens) and the number 1.7.

Although as I've related in the many, many other threads that exist in this very foroum on 50mm lenses, I don't necessary recommend spending the extra money for the "A" version, considering 50mm is not a focal length many people use that much on digital (unless it's their only choice, of course). Getting an "M" version rather than "A" version requires you to learn manual exposure mode on the camera, but that's worth learning anyhow. It's not rocket science.
01-13-2010, 04:25 PM   #12
Forum Member




Join Date: Jun 2009
Location: Portugal
Posts: 50
You don't have to spend 300 in a 50mm lens. I consider the 45 euro I payed for an M50 1.7 (shipping included) money very well spent. The difference in IQ is huge. Of course using manual lenses it's not the easiest or fastest way to take pictures, but it is worth the effort.
01-13-2010, 04:33 PM   #13
Veteran Member




Join Date: Dec 2009
Location: Ontario
Posts: 550
The biggest thing an F1.4 lens can do that the kit lens can not is shooting in low light condition. In my opinion at least. Other than that not much more difference. The 1.4 lens is also really good for portrait shots.
01-14-2010, 12:47 AM   #14
Junior Member




Join Date: Jan 2010
Posts: 27
Original Poster
what this one indication of use compare with 1.7 : '' wide-angle prime 28mm 1:2.8 ''

ps: manual Chinon 50mm F1.4 (pentax k) it is ok for 50euro ? or should i stick to the 1.7

will this lens ''Ricoh Rikenon P 50/1,7 ''(withaut P pin ) will work on my k-x ?

Last edited by crossing; 01-14-2010 at 05:35 AM.
01-14-2010, 05:57 AM   #15
Veteran Member




Join Date: Dec 2006
Location: Outside of Philly
Posts: 1,564
QuoteOriginally posted by crossing Quote
what this one indication of use compare with 1.7 : '' wide-angle prime 28mm 1:2.8 ''
That lens is a different focal length and a much slower maxmimum aperture. You DO realize what the 50mm (and 28mm) means? As well as the f/1.7 and f/2.8? Once you understand those specifications, comparing lenses becomes easy.
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!
50mm, 50mm f1.4, camera, f1.4, f3.5-5.6, k-x, kit, lens, pentax help, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax K7 lens profiles for DA* 16-50mm, DA* 50-135mm, and 18-55mm kit lenses amoringello Digital Processing, Software, and Printing 20 09-09-2010 09:54 PM
For Sale - Sold: K10D body, DA 18-55mm kit lens, Tamron DiII AF18-250mm lens; Tamrac Velocity 8 gimmepizza Sold Items 9 12-01-2009 05:26 AM
For Sale - Sold: WTT Pentax 18-55 AL II kit lens for 18-55 AL kit lens + money wallyb Sold Items 2 11-11-2009 02:26 PM
Replacement Lens Hood for 18-55mm Kit Lens? atnbirdie Pentax DSLR Discussion 7 07-20-2008 03:19 PM
Please post comparisons images between the 18-55mm kit lens, SMC A 1.7 and 2.0 50mm. shaolin95 Pentax SLR Lens Discussion 21 02-10-2008 07:39 PM



All times are GMT -7. The time now is 07:11 PM. | 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