Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-11-2010, 02:54 AM   #16
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
QuoteOriginally posted by CrossStealth Quote
She has a cannon rebel t1i
ah, gfs stands for girlfriend's

02-11-2010, 03:41 AM   #17
Veteran Member
Ben_Edict's Avatar

Join Date: Jul 2007
Location: SouthWest "Regio"
Photos: Albums
Posts: 3,303
QuoteOriginally posted by CrossStealth Quote
I would love the DA*16-50 but it seems to sell for about 1000 on ebay so its way out of my price range

Also I think I would prefer something like 1.4-1.7 I tested 1.8 on my gfs camera and it still had very minor motion blur
If you already recognized the need for a lens in the 1.7-aperture range, it is pretty clear that you either need one of the 50mm lenses or one of the more exotic and more expensive Limited (31/1.8 or 43/1.9) lenses or one of the few third party fast wide lenses (Sigma makes a few).

The K-x seems to be pretty good at ISO 1600 and thus should be fine with one of the comparatively fast zooms. If the DA 16-50/1.8 is too expensive, take a look at the Sigma 18-50/2.8, which is a very fine lens for less than half the Pentax price.

Ben
02-11-2010, 04:13 AM   #18
Veteran Member
tokyoso's Avatar

Join Date: Jan 2010
Location: Tokyo
Photos: Albums
Posts: 723
QuoteOriginally posted by CrossStealth Quote
Also I think I would prefer something like 1.4-1.7 I tested 1.8 on my gfs camera and it still had very minor motion blur
The folks at your dojo must have super fast hands

EDIT- maybe you shouldve gotten a Canon so you can borrow your gfs lenses

Last edited by tokyoso; 02-11-2010 at 06:00 AM.
02-11-2010, 06:08 AM   #19
Inactive Account




Join Date: Dec 2008
Location: Ames, Iowa, USA
Photos: Albums
Posts: 2,965
QuoteOriginally posted by CrossStealth Quote
I just tested and I like somewhere around 42mm. So 50 would be ok with me. I think Id like a fast zoom lens if they exist

I dont mind using a flash at all
Since you can use flash and depth of field will be a problem, perhaps you should buy a good external flash & just use your Kit lens.

Dave in Iowa

02-11-2010, 08:12 AM   #20
Site Supporter
Fl_Gulfer's Avatar

Join Date: Jul 2007
Location: Florida Gulfer
Photos: Albums
Posts: 3,051
Why not borrow or rent a lens to see if you like it first? I have the Tamron 17-50 2.8 and like it very much. I've see them used for about 325.00
02-11-2010, 08:20 AM   #21
Moderator PEG Judges
Kerrowdown's Avatar

Join Date: Aug 2008
Location: Highlands of Scotland.
Photos: Gallery
Posts: 32,634
Usually fast primes would be the way to go for this sort of event, as primes tend to have the edge over zooms in terms of speed, unless you have of course a large bank roll to fund this LBA.

The critical bit in terms of deciding focal length is how close can you get to the action, i.e fill the frame.
02-11-2010, 09:10 AM   #22
Senior Member




Join Date: Feb 2009
Location: NYC
Posts: 233
I think that the suggestion by some other PF members to upgrade your lighting situation first is a good recommendation. You may even find out that you can put off LBA for a while.

My sugesstion, keep an eye on the "marketplace". Use the lense review section to research the lenses and EBay to confirm what the going rates are for them. BTW, it's more likely you'll get a good bargain in the Marketplace" than on EBay. You just have to be patient.
02-11-2010, 06:52 PM   #23
Moderator
Site Supporter
Blue's Avatar

Join Date: Jun 2008
Location: Florida Hill Country
Photos: Gallery | Albums
Posts: 17,212
How is firing a flash in the dojo going to be received? I'd hate to get a flashy thing go off in my eyes right before a guy closed on me to kick me in the head!

02-12-2010, 12:33 PM   #24
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
I'd agree flash would probably not be something you'd be able to use often. I'd also caution against expecting a very fast lens (eg, f/1.4) to be ideal for action, since DOF is so shallow. You might get lucky sometimes, but overall, I suspect you're usually better off shooting more like around f/2.8, increasing ISO as necessary, and depending on luck and/or good timing to freeze action enough to get the kind of sharpness you need for the print size you have in mind 9and if it's just viewing on computer, so much the better!).
02-14-2010, 05:37 AM   #25
Junior Member




Join Date: Feb 2010
Posts: 43
Original Poster
I think my next step is to get an external flash. Any suggestions on which external flash is a good choice? To be honest I dont understand how it would be much different from the normal flash. As I said I have a Pentax k-x so anything compatible please
02-14-2010, 06:44 AM   #26
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
The main difference will be the guide number. Your built-in flash has a GN of around 13. This means that with a standard kit lens (at around f/3.5) and an ISO of 100, you can do a maximum of 4 meters (double it for iso 400 and double it again for iso 1600). A decent external flash will have at least double or triple that guide number. So your reach will be further.
02-14-2010, 07:40 AM   #27
Junior Member




Join Date: Feb 2010
Posts: 43
Original Poster
I gotchya. So any suggestions on a good flash I can pick up that wont cost a ton? And I heard they swivel etc to stop reflective light sometimes.
02-14-2010, 07:52 AM   #28
Veteran Member
Nachodog's Avatar

Join Date: Dec 2007
Location: Montreal, Qc
Posts: 457
I think you'll be very happy with the FGZ-540. It does have a swivel head which will give very much more appealing lighting when bounced off of a wall or ceiling. You can use it in wireless mode as well to get the right angle of reflection.

I agree with blind-bat that if you invest in a good flash, you can push off investing in a fast lens. To be honest, you'd probably want to shoot around f5.6-f8 to get the best depth of field and sharpest photo anyways.

Edit: Also wanted to mention that even if the camera syncs at 1/180s, the flash impulse will freeze the action very well.
02-14-2010, 08:02 AM   #29
Junior Member




Join Date: Feb 2010
Posts: 43
Original Poster
That one seems to be 400-500 bucks Hmm What advantages does it have over something like this?
PENTAX AF400FTZ ELECTRONIC TTL FLASH UNIT FOR PENTAX AF - eBay (item 370265316981 end time Feb-21-10 20:28:03 PST)

or this one
http://cgi.ebay.com/DEDICATED-AUTO-PTTL-FLASH-FOR-Pentax-K-m-K2000-K-x-KX_W0...item5ad66a9a68

Or this http://cgi.ebay.com/GN38-Speedlite-Flash-YN460-II-for-Pentax-K-7-K-X-K-m_W0Q...item2304feda1d

Last edited by CrossStealth; 02-14-2010 at 08:13 AM.
02-14-2010, 11:01 AM   #30
Veteran Member
sterretje's Avatar

Join Date: Dec 2008
Location: Roodepoort, South Africa
Photos: Gallery | Albums
Posts: 3,534
No reply to post #29 but remember that tilt/swivel will increase the distance that the flash needs to cover. And non-white coloured walls/ceiilings will add a colour cast to the images.
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, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K-x good enough for fast action? LinXitoW Video and Pentax HDSLRs 12 03-09-2010 02:30 AM
Fast action shot... sawtooth235 Post Your Photos! 10 06-05-2009 06:23 PM
Who says you can't do fast action with a Pentax! kkoether Pentax DSLR Discussion 132 05-20-2009 02:17 PM
(Very) Fast action pictures ismaelg Post Your Photos! 18 04-13-2009 02:26 PM
Fast Lense Dags Pentax SLR Lens Discussion 4 11-28-2008 12:06 AM



All times are GMT -7. The time now is 11:29 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