Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
08-26-2009, 02:22 AM   #1
Senior Member
trishytee's Avatar

Join Date: Jan 2009
Location: Mandurah Perth
Photos: Gallery | Albums
Posts: 221
Blurry pics

I seem to need help with my bird pics. No matter what I try if they are moving I get a sort of halo effect. Both the attached pics (I hope) show this. I am using the K-M pentax Shooting at 1500 @f5.6 with an iso 200. the camera is set on spot metering. I find if I shoot any faster I lose too much light. If I set the ISO say to 400 I get so much noise it is deafening. the zoom I am using is A sigma at full 300ml. Plus 5.6 is as far down as the camera allows me to go. If there is no attachment please let me know where I have gone wrong!

Attached Images
   
08-26-2009, 02:25 AM   #2
Senior Member
trishytee's Avatar

Join Date: Jan 2009
Location: Mandurah Perth
Photos: Gallery | Albums
Posts: 221
Original Poster
Oh, good it worked. If you use your control plus keys you can bring them up and you will see particuarly around the heads the 'haloing'.
08-26-2009, 02:48 AM   #3
Veteran Member
Wombat's Avatar

Join Date: May 2008
Location: South Australia
Photos: Gallery | Albums
Posts: 901
Do you have shake reduction on or off and are you shooting handheld or on a tripod? My first thought would be to use a smaller aperture - 8 or 11, which will bring your shutter speed down and give your lens a better chance for a sharper capture. Even with SR on, if you're trying to hand-hold a 300mm lens and chase a bird around the sky, well, that takes pretty good skill and a camera with very fast AF to pull it off. I'd suggest working up to it by practising on slower-moving birds eg wedge-tail or similar and if you can, use a shorter lens and crop into it until your skills build up.
08-26-2009, 04:37 AM   #4
Veteran Member




Join Date: Jan 2009
Location: Budapest
Posts: 821
QuoteOriginally posted by trishytee Quote
the zoom I am using is A sigma at full 300ml.
Try it with a better lens. Don't expect miracles from the cheap sigma 70-300 zoom lens, especially at the 300mm end.

08-26-2009, 04:49 AM   #5
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,399
if you are panning or tracking a moving subject shake reduction can cause this. shake reduction is for stationary objects only
08-26-2009, 06:08 AM   #6
Loyal Site Supporter
imtheguy's Avatar

Join Date: Mar 2009
Location: Virginia Beach
Photos: Gallery | Albums
Posts: 2,950
Actually look very good for fully racked out 300mm @f5.6. I can't see any problem with the first pic and only a slight glow on the second. Good suggestions so far to cut off SR while panning and try different Ap, slower birds and such. Might also try cutting back your lens from 300mm to just 250mm or so to see if that clears up anything since f5.6 is pushing it at 300mm.

I am not very familiar with the k-m and do not understand when you say your cam does not allow you to stop down past 5.6. Thats pretty wide open for 300mm and makes for a less defined pic.
08-26-2009, 07:03 AM   #7
Senior Member
trishytee's Avatar

Join Date: Jan 2009
Location: Mandurah Perth
Photos: Gallery | Albums
Posts: 221
Original Poster
Ok. The reason I have it on 5.6 is to let in more light, because as soon as I use the full zoom I lose light, and as I mentioned if I go to more ISO I get noise. And as for a slower moving bird, well the kestrel is only just moving. So I should take the shake reduction off? Simico I take what you say to heart as a friend who was with me when I tried for the incredible golden bosun shot, got a much sharper picture than I with her dedicated Pentax lens. Thanks for your kind words Lee. Re the 5.6 seems when I shoot at 1500 on manual I just can't get a lowerer aperature than 5.6, but if I go to 1000 I can then get f4.5, but then I am back with the too dark option unless it is a brilliant sunny day. But I think I might just have to find faster glass, and try a few of these suggestions.
Thanks all.
08-26-2009, 10:52 AM   #8
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
I think you'll be better of turning up the ISO and learning to live with - or better yet, control through post-processing and/or better JPEG settings in-camera - the noise. Most PP softwareis pretty good at removing the kind of nosie you'd get at relatively low ISO levels like 400, especially if you shoot RAW. If you shoot JPEG, you can do yourself a favor by using natural mode instead of bright, not turning up the sharpening, not using D-range or any other features that improve the dynamic range of the photo but introduce noise as a consequence.

These aren't bad for handheld shots at wide open aperture of moving subjects, but you're running into the limits of what can be done with what you've got. BTW, it isn't the camera limiting you to f/5.6 - it's the lens. A "faster" lens would allow you to go to f/4, or even f/2.8 if you've got the money and the arms / tripod for it. Or, it would allow you to shoot at f/5.6 with much better quality, because you wouldn't be at the extreme wide open setting.

08-26-2009, 11:14 AM   #9
Veteran Member




Join Date: May 2009
Location: Twin Cities, MN
Posts: 2,869
I think I have to concur this is a trademark wide-open aperture (non-EX lens) sigma look. In other words, soft.
08-27-2009, 05:51 AM   #10
Senior Member
trishytee's Avatar

Join Date: Jan 2009
Location: Mandurah Perth
Photos: Gallery | Albums
Posts: 221
Original Poster
Speaking of which, I found a Pentax 80-320 f4.5 5.6 lens here on Oz Ebay, and it looks OK but the seller is replacing it with a Sigma 70-200 f2.8. Any one know how it would compare with my Sigma 100-300ml 1:4.5-6.7?? Not sure I will be any better off.
Meanwhile thanks so much for all your advice here, I really do appreciate it, and will certainly try some of your advice. Seem to do ok with stationary objects, but must admit just not as sharp as I would like. I might even try my old manual 70-200 pentax lens. Thanks. Will begin a new thread so I can show you a blue wren which stayed still for a split second. No blur but he is just not sharp to my way of seeing. Thanks again.
08-29-2009, 03:34 AM   #11
Veteran Member
Barnster's Avatar

Join Date: Jun 2009
Location: Mid North Coast,Australia
Photos: Gallery
Posts: 1,013
QuoteOriginally posted by simico Quote
Try it with a better lens. Don't expect miracles from the cheap sigma 70-300 zoom lens, especially at the 300mm end.
I second that!
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!
camera, iso, pentax help, photography, pics
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Machinery blurry is a beauty poogeek Post Your Photos! 4 10-26-2010 10:25 PM
Sports Artistis vs blurry? emilf Photo Critique 10 04-21-2010 08:12 PM
Most of my low light flash pics are blurry...why? vmax84 Troubleshooting and Beginner Help 18 12-08-2009 08:57 AM
Blurry pictures dales Pentax DSLR Discussion 8 01-18-2009 02:49 PM
Help on blurry pictures. lipsestraat Pentax DSLR Discussion 24 08-16-2007 09:48 PM



All times are GMT -7. The time now is 02:43 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