Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-10-2008, 11:08 AM   #1
Senior Member
deludel's Avatar

Join Date: Jan 2008
Location: Durham, CT
Posts: 196
K10, Shutter Speed Settings?

In the spirit of still learning , I have this question to ask ..

What are your suggestions for the "min/max" shutter speed that works on the k10/kit lens without needing a tripod? I've been practicing with TV & AV modes (am more comfortable so far in AV) and have noticed that when I am in AV mode, the shutter speed often causes a blurry picture .. from what I know so far, it's due to a low lighting/long shutter speed setting.

Does anyone have any "best practices" for what speeds work best to avoid the blur ... assuming there is no tripod?


Last edited by deludel; 02-10-2008 at 11:08 AM. Reason: typo
02-10-2008, 01:21 PM   #2
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,554
Shutter speeds are dependent upon the focal length of the lens you are using, how steady you are and how much external motion there is.

The old rule of thumb is 1/focal length hand held. With the SR on, the k10d should be able to give you two more stops. For example, a 200 mm lens can be hand held by most people at 1/200 second. With SR turned on, most people will be able to hand hold at 1/50 second.

With practice, images can be taken at lower speeds.
02-10-2008, 01:58 PM   #3
Forum Member




Join Date: Aug 2007
Location: Sydney Australia
Photos: Gallery
Posts: 73
Actually you should apply the formula to the 35mm equivalent focal length. So for a 200mm lens it would be 200 x 1.5 = 300. Without shake reduction you would use 1/300. With shake reduction I use 1/125 to give me a margin of safety. You may be able to go lower depending on how steady your hands are.

Rusty
02-10-2008, 02:08 PM   #4
Loyal Site Supporter
Canada_Rockies's Avatar

Join Date: Nov 2007
Location: Sparwood, BC, Canada
Photos: Gallery | Albums
Posts: 9,554
QuoteOriginally posted by Rusty Quote
Actually you should apply the formula to the 35mm equivalent focal length. So for a 200mm lens it would be 200 x 1.5 = 300. Without shake reduction you would use 1/300. With shake reduction I use 1/125 to give me a margin of safety. You may be able to go lower depending on how steady your hands are.

Rusty
Thanks, Rusty. I have always been able to hand hold at 1/2 the focal length on 35mm, so I can hand hold quite well at really slow speeds with SR turned on.

02-10-2008, 11:21 PM   #5
Senior Member
deludel's Avatar

Join Date: Jan 2008
Location: Durham, CT
Posts: 196
Original Poster
QuoteOriginally posted by Canada_Rockies Quote
The old rule of thumb is 1/focal length hand held. With the SR on, the k10d should be able to give you two more stops. For example, a 200 mm lens can be hand held by most people at 1/200 second. With SR turned on, most people will be able to hand hold at 1/50 second.
Great info, and I'm happy to say I understand!

This brings up a question about Shake Reduction .. one of the selling features of the K10 is the image stabilization. That being said, I see the SR lever on the back of the camera .. is that what you are referring to? When would anyone ever set that to "off"?
02-10-2008, 11:44 PM   #6
Veteran Member
aegisphan's Avatar

Join Date: Nov 2007
Location: New Mexico
Posts: 815
That would be when you use a tripod. SR would cause the image less sharp you shoot on a tripod.
QuoteOriginally posted by ldelude Quote
Great info, and I'm happy to say I understand!

This brings up a question about Shake Reduction .. one of the selling features of the K10 is the image stabilization. That being said, I see the SR lever on the back of the camera .. is that what you are referring to? When would anyone ever set that to "off"?
02-11-2008, 10:46 AM   #7
Veteran Member
Mechan1k's Avatar

Join Date: Jun 2007
Location: Sydney, Australia
Posts: 2,891
Also as a feature ... when selecting the timer or remote shutter release feature ... SR is automatically turned off for this reason.
02-11-2008, 11:00 AM   #8
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
QuoteOriginally posted by Rusty Quote
Actually you should apply the formula to the 35mm equivalent focal length. So for a 200mm lens it would be 200 x 1.5 = 300. Without shake reduction you would use 1/300. With shake reduction I use 1/125 to give me a margin of safety. You may be able to go lower depending on how steady your hands are.

Rusty
you're not looking any further with a 200mm on a cropped sensor, you just have the field of view of a 300mm at the same distance of a 200mm.....

so i disagree with your Dslr conversion.

shake is a function of viewing distance (or i guess the hyperfocal location), not field of view.


Last edited by Gooshin; 02-11-2008 at 11:05 AM.
02-11-2008, 11:50 AM   #9
Veteran Member
mattdm's Avatar

Join Date: Feb 2007
Location: Boston, MA
Photos: Gallery
Posts: 2,964
QuoteOriginally posted by Gooshin Quote
you're not looking any further with a 200mm on a cropped sensor, you just have the field of view of a 300mm at the same distance of a 200mm.....

so i disagree with your Dslr conversion.

shake is a function of viewing distance (or i guess the hyperfocal location), not field of view.
But blur is a function of view/print size. If you take an image from a 1.5 crop camera and print it at the same size as a 35mm frame image, you'll have scaled it up 1.5 more which roughly means blur is 1.5 more visible. That's why you have to convert the rule of thumb.

If you're making big prints (or are obsessed with sharpness), you'll find the rule of thumb isn't strict enough anyway. Plus, while the SR can buy you 2 stops, that's more of an average than a fixed improvement: sometimes it seems to do nothing at all and sometimes it gets you amazing results at really long shutter speeds. So, if you factor these things together, one approach is to just count the possible improvement for SR as 1.5 stops and use the old rule of thumb with no conversion.
02-11-2008, 11:52 AM   #10
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
QuoteOriginally posted by mattdm Quote
you'll have scaled it up 1.5 more which roughly means blur is 1.5 more visible
now that makes sense.
02-11-2008, 10:18 PM   #11
Pentaxian
jgredline's Avatar

Join Date: Oct 2007
Location: LosAngeles, Ca.
Photos: Albums
Posts: 10,587
QuoteOriginally posted by mattdm Quote
But blur is a function of view/print size. If you take an image from a 1.5 crop camera and print it at the same size as a 35mm frame image, you'll have scaled it up 1.5 more which roughly means blur is 1.5 more visible. That's why you have to convert the rule of thumb.

If you're making big prints (or are obsessed with sharpness), you'll find the rule of thumb isn't strict enough anyway. Plus, while the SR can buy you 2 stops, that's more of an average than a fixed improvement: sometimes it seems to do nothing at all and sometimes it gets you amazing results at really long shutter speeds. So, if you factor these things together, one approach is to just count the possible improvement for SR as 1.5 stops and use the old rule of thumb with no conversion.
Great post!!!!
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!
av, camera, dslr, photography, shutter, tripod
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Shutter speed on K-x CrabShadow Troubleshooting and Beginner Help 7 08-14-2010 06:46 AM
Aperture and Shutter Settings buckethead Pentax DSLR Discussion 24 07-14-2008 04:51 AM
Shutter speed?! seymop Pentax DSLR Discussion 4 10-02-2007 07:28 PM
K10 Jpeg Settings Kemal Pentax DSLR Discussion 3 04-23-2007 12:24 PM
Shutter Speed? ryanmkk Pentax DSLR Discussion 4 11-15-2006 03:27 AM



All times are GMT -7. The time now is 02:44 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