Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-25-2007, 06:26 PM   #1
Inactive Account




Join Date: Sep 2007
Location: Vancouver, Wash.
Posts: 26
K10D built in flash

Just wondering what the distance limitation is for this camera using the built in flash & the 18-55mm kit lens. I took some pics. last night using the bulb mode/changed the menu to flash & found that the pics. were very fuzzy (motion) when taking the pic. from any distance greater than about 10 to 12 ft. Thanks for the input.

12-25-2007, 06:33 PM   #2
Veteran Member
vievetrick's Avatar

Join Date: Sep 2006
Location: Easthampton - Massachusetts - USA
Photos: Gallery
Posts: 5,175
Well, you did a lot of things that could be wrong. Not knocking you or anything but why are you shooting in Bulb mode? Did you use a tripod with shutter release? As for the flash range 10-12 is pretty good if you ask me. I promise you will learn alot here and this is not a dig at you We need a bunch more info and I am sure we will help you find what you need.
12-25-2007, 06:38 PM   #3
Inactive Account




Join Date: Oct 2007
Location: Niagara, Wisconsin U.S. of Ay.
Posts: 394
All I know is I forgot to change a flash setting this week when I took pictures in a church setting and my first shot just about gave my subject flash burns. I was a good 20 feet away. Not that this answers anything here!
12-27-2007, 08:23 PM   #4
Senior Member




Join Date: Jun 2007
Location: London, UK
Photos: Gallery
Posts: 214
I was using that lens + camera (+onboard flash) combination to shoot at a corporate Christmas Party a few weeks ago now, and found that at distances of 1-3metres (3-10feet)everything was great. For some shots, I also got some elevation and used the onboard flash to illuminate subjects 4-5 metres (12-15ft) away, and that also went relatively well. Add to that the amount of data retained even in relative darkness, and I was able to extract a lot more detail from shots in post-processing.

I agree, however, that Bulb mode is not really your friend in situations like that. Given camera shake with low light conditions were the biggest issue, I set ISO to 800 and the camera to Manual and kept the aperture as close to f3.5 as I could throughout the night (slightly offtopic: the K10D's low-light autofocus, while not infallible, did well under the circumstances!)

12-28-2007, 01:50 AM   #5
Veteran Member




Join Date: Jun 2007
Location: California
Posts: 426
The built in flash has a guide number of 36 @ 100 iso (in ft). So you can use the "guide number / f number = maximum distance" rule. Remember to multiple the guide number by 1.44 every time you double your iso (so 200iso = 36 x 1.4 = 52 and 400iso = 36 x 2 = 72).

So say you were taking a picture at f/4 @ 100 iso, your maximum flash distance is 36 / 4 = 9 ft. f/4 at 400 iso will give you a maximum flash distance of 18ft.

Found this pic to help.

Last edited by AVANT; 12-28-2007 at 08:56 AM. Reason: Added Pic for Reference
12-28-2007, 10:29 PM   #6
Inactive Account




Join Date: Sep 2007
Location: Vancouver, Wash.
Posts: 26
Original Poster
Thanks so much Avant for this info. I appreciate it.
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, distance, dslr, flash, photography, pics
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
In what situation can you use the external flash that the built in flash couldnt? rustynail925 Flashes, Lighting, and Studio 25 01-13-2010 01:26 PM
flash guide updated for k-7 built-in flash mattdm Pentax News and Rumors 4 05-26-2009 06:02 PM
wireless flash using built in flash k200d dtra Flashes, Lighting, and Studio 3 04-04-2008 12:34 AM
contrast control sync: 540FGZ + K10D built-in flash WMBP Flashes, Lighting, and Studio 6 09-23-2007 02:28 AM
How do I get the K10D built-in flash to work jazzman Pentax DSLR Discussion 3 07-04-2007 08:28 PM



All times are GMT -7. The time now is 11:08 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