Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-11-2008, 07:55 PM   #31
Inactive Account




Join Date: Nov 2008
Location: France
Posts: 21
Original Poster
hello,
I've just bought the k10D and tried to play and shoot some with the da 18-55 from the ds kit in a country walk last sunday.
I'm sure you've talked hundred times about that, and sorry about that, but 95% of the pictures are seriously unfocused.
Tried to search this problem on the web and read about front and back focus problems. People had to update with firmwares (ok) and russian cracks (?) to solve the firmware updates incidence on focus, OR to send the K10D to Pentax with their main lenses for fixing it all. Is it a joke? Could it be so serious?
Never had a problem like that with the ds, none other camera.
What do you think about that? Do i have to change my k10 or maybe get my money back?
Thanks fot your nice replies.

11-11-2008, 09:14 PM   #32
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,134
Before you do that, bring up the images in your editor on screen, and find out where the camera actually focused. If you cannot tell, take some test shots. You will probably find that you thought the camera was going to focus on whatever was in the middle of your frame, but it used one of the other focus points instead. You can control the use of other points with the dial on the back of your k10d. Set it to use only the centre focus point by turning it completely to the right position, not the green one on the left and not the Sel position.
11-11-2008, 10:42 PM   #33
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
I'd say, post some sample pictures. I agree with the previous poster's implication - it's likely that the problem is simply the camera not focusing on the object you wanted it to focus on. This has nothing with the BF or FF problems that some experience. If you want to be sure, download a good focus test chart like the one at Home, which provides a single focus target that the camera cannot possibly choose to ignore.
11-12-2008, 04:57 AM   #34
Veteran Member
Ben_Edict's Avatar

Join Date: Jul 2007
Location: SouthWest "Regio"
Photos: Albums
Posts: 3,303
I would simply fix the AF function to the center point for a start and use AF that way for a couple of shots. If the focus still is off, then you may want to investigate other reasons.

Ben

11-16-2008, 04:10 PM   #35
Inactive Account




Join Date: Nov 2008
Location: France
Posts: 21
Original Poster
Hello,
I tried to test the central focus. It's ok with manual lenses but i can'get a correct focus with my two AF Lenses.
Second problem: when i'm against the sun, the pictures are awfull ; green of grass and trees are like cooked salad (worst than with my Fuji F100, not so good in these cases at 400 isos).
Third problem: i know the AF on Pentax DSLR are not so quick but it's such a pity I can't portrayed my dog gently walking (pictures out of focus too).
I have to say none of these problems were encountered with my DS.
What's your Verdict? Is my KD a lemon, must i change for a K20 or just keep my ds and spare for a N... D90.
Thanks.
11-16-2008, 09:23 PM   #36
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,134
QuoteOriginally posted by mapov Quote
Hello,
I tried to test the central focus. It's ok with manual lenses but i can'get a correct focus with my two AF Lenses.
Second problem: when i'm against the sun, the pictures are awfull ; green of grass and trees are like cooked salad (worst than with my Fuji F100, not so good in these cases at 400 isos).
Third problem: i know the AF on Pentax DSLR are not so quick but it's such a pity I can't portrayed my dog gently walking (pictures out of focus too).
I have to say none of these problems were encountered with my DS.
What's your Verdict? Is my KD a lemon, must i change for a K20 or just keep my ds and spare for a N... D90.
Thanks.
I believe the problem lies with your camera. I had no problem with autofocus with any of my Pentax AF cameras, the SF-1, MZ-S and now the K10D. It can be slow in low lighting, yes, but I can certainly follow a dog, soccer player or hockey player well enough to get decent images.

The first thing I would try is simply to clean the lens contacts and the camera mount contacts. I had troubles with my DA* 50-135, of all lenses, and it turned out to be nothing more than contacts that were not scrupulously clean.
11-17-2008, 12:12 AM   #37
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
I'd still say, post some samples.
11-17-2008, 04:25 AM   #38
Veteran Member
Ben_Edict's Avatar

Join Date: Jul 2007
Location: SouthWest "Regio"
Photos: Albums
Posts: 3,303
QuoteOriginally posted by Marc Sabatella Quote
I'd still say, post some samples.
Marc is very right. There is simply no way to guess, whether your problems lie with the camera or something else, without seeing the actual images - and reading the EXIFs, too.

Ben

11-17-2008, 09:55 AM   #39
axl
Veteran Member




Join Date: Mar 2007
Location: Nove Zamky, Slovakia
Photos: Gallery | Albums
Posts: 7,181
QuoteOriginally posted by Marc Sabatella Quote
I'd still say, post some samples.
I second to this opinion.
It's hard for us to suggest or say anything if we don't see the examples. In my experience, focusing with K10D can be tricky but if you know what you're doing you'll get it right. It just takes a patience and practise, and knowing what and how to focus on.
anyway, post some pics...
11-17-2008, 10:28 AM   #40
Syb
Site Supporter
Syb's Avatar

Join Date: Aug 2007
Location: Near Utrecht, Netherlands
Photos: Gallery
Posts: 1,224
Before the thread is only on that one K10d with rather unspecified problems that may be linked to an unspecified default setting by some ... user, let's come back to the main question:

... The last k10 are next door for 339 euros (431 dollars). Do you think it's still a good choice and what brings this Dslr obviously more than the ds in terms of image quality?.....

I would suggest you look (for example on flickr) for pics taken with a K10d and pics taken with a Ds. Compare them, see if you think the difference is worth the money.

Here is my theory: A good photographer is less dependant on his camera. A weak photographer (like me) needs the full range of Post-processing options and cropping possibilities to get something showable out of the image data...

So for me a K20d is best (I don't have it yet, my gigs are not numerous enough to justify the purchase ) . It makes large files which I can post-process for hours before they are something.

Of you are a very good photographer, you may need no more than a Ds (which is in imho a very decent and good camera...)

But I guess you made your choice already. So tell us: what has it become?
11-17-2008, 11:09 AM   #41
Inactive Account




Join Date: Nov 2008
Location: France
Posts: 21
Original Poster
Samples with exifs
(3 clicks on the little pictures to see the full size)



Propriétés Exif

Espace colorimétrique 1
Contraste 0
Rendu personnalisé 0
Date et heure numérisés 2006:01:05 15:59:22
Date et heure d'origine 2006:01:05 15:59:22
Version EXIF 2.2.1
Valeur d'angle d'exposition 0
Mode d’exposition 0
Programme d'exposition 2
Temps d’exposition 0.02222222
Flash 16
Version FlashPix 1.0
Ouverture numérique 3.5
Longueur focale 28
Distance focale pour un film 35mm 42
Caractéristiques de vitesse ISO 100
Mode d'exposition 5
Dimension X en pixels 3872
Dimension Y en pixels 2592
Saturation 0
Type de saisie de scène 0
Méthode de détection 2
Netteté 2
Plage de distance de l'objet 3
Balance des blancs 0

-----------------



Propriétés Exif

Espace colorimétrique 1
Contraste 0
Rendu personnalisé 0
Date et heure numérisés 2006:01:05 16:17:10
Date et heure d'origine 2006:01:05 16:17:10
Version EXIF 2.2.1
Valeur d'angle d'exposition 0
Mode d’exposition 0
Programme d'exposition 3
Temps d’exposition 0.01111111
Flash 16
Version FlashPix 1.0
Ouverture numérique 4
Longueur focale 63
Distance focale pour un film 35mm 94
Caractéristiques de vitesse ISO 200
Mode d'exposition 5
Dimension X en pixels 3872
Dimension Y en pixels 2592
Saturation 0
Type de saisie de scène 0
Méthode de détection 2
Netteté 2
Plage de distance de l'objet 3
Balance des blancs 0


-------------


Propriétés Exif

Espace colorimétrique 1
Contraste 0
Rendu personnalisé 0
Date et heure numérisés 2006:01:05 16:24:08
Date et heure d'origine 2006:01:05 16:24:08
Version EXIF 2.2.1
Valeur d'angle d'exposition 0
Mode d’exposition 0
Programme d'exposition 3
Temps d’exposition 0.03333334
Flash 16
Version FlashPix 1.0
Ouverture numérique 4
Longueur focale 58
Distance focale pour un film 35mm 87
Caractéristiques de vitesse ISO 400
Mode d'exposition 5
Dimension X en pixels 3872
Dimension Y en pixels 2592
Saturation 0
Type de saisie de scène 0
Méthode de détection 2
Netteté 2
Plage de distance de l'objet 2
Balance des blancs 0

-----------------


Propriétés Exif

Espace colorimétrique 1
Contraste 0
Rendu personnalisé 0
Date et heure numérisés 2006:01:05 16:26:45
Date et heure d'origine 2006:01:05 16:26:45
Version EXIF 2.2.1
Valeur d'angle d'exposition 0
Mode d’exposition 0
Programme d'exposition 2
Temps d’exposition 0.05
Flash 16
Version FlashPix 1.0
Ouverture numérique 4
Longueur focale 58
Distance focale pour un film 35mm 87
Caractéristiques de vitesse ISO 400
Mode d'exposition 5
Dimension X en pixels 3872
Dimension Y en pixels 2592
Saturation 0
Type de saisie de scène 0
Méthode de détection 2
Netteté 2
Plage de distance de l'objet 3
Balance des blancs 0
11-17-2008, 11:31 AM   #42
Site Supporter




Join Date: Mar 2008
Location: Prince George, BC
Photos: Gallery
Posts: 2,253
Your problem seems to be motion blur. The fastest shutter speed is 1/90th second on the church. The church also is the sharpest. I see nothing wrong with the autofocus.
11-17-2008, 11:37 AM   #43
Syb
Site Supporter
Syb's Avatar

Join Date: Aug 2007
Location: Near Utrecht, Netherlands
Photos: Gallery
Posts: 1,224
1/30, 1/50, those are shutter times that should be doable handheld, right? Makes me wonder whether S/R was on, or off.

With S/R on, much better chances!
11-17-2008, 12:12 PM   #44
Inactive Account




Join Date: Nov 2008
Location: France
Posts: 21
Original Poster
Always on.
11-17-2008, 12:44 PM   #45
Veteran Member
Ben_Edict's Avatar

Join Date: Jul 2007
Location: SouthWest "Regio"
Photos: Albums
Posts: 3,303
Dear mapov

looks like the images are simply blurred, due to camera shake. Shake Reduction works nicely, but within limits. I only single out the image with the women walking:

The focal length is 58mm, but your shutter speed is only 1/20s. If you take the crop factor into account, the focal length is equivalent to a 90mm lens on a 35mm camera. That would translate into a shutter speed of 1/90s. You did not even reach a quarter of that.

Image blurr due to camera shake has nothing to do with the focus. In your example images, there is no evidence, that the camera has performed badly. For shots like that, you really should use a tripod or at least a rest (like leaning your arm against a tree), to support the camera.

Ben
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, ds, dslr, k10, pentax, photography
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Upgrade from *ist DS? retroflex Pentax DSLR Discussion 4 01-27-2010 12:35 AM
Upgrade from *ist DS to.... what?? subidoc Pentax DSLR Discussion 20 11-21-2009 07:56 AM
Upgrade from *ist DL Music Troubleshooting and Beginner Help 10 07-07-2009 10:43 AM
Why should I upgrade from *ist DL? Music Pentax DSLR Discussion 14 12-31-2008 09:22 AM
Upgrade to K10 or K200? DanLoc78 Pentax DSLR Discussion 9 04-11-2008 09:19 PM



All times are GMT -7. The time now is 01:43 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