shutter speed question

JeffP3456 · 12-02-2012, 09:55 PM

i set my k-01 up in Av mode and with interval shooting but as the scene darkened the camera refused to lower the shutter speed below 1/25th even after pushing iso up to 25k (thus many black pictures)
I was surprised as the manual says auto shutter is from 30sec to 1/4000 and can't figure out why the camera wont drop the speed?

anyone have any ideas?

tia
Jeff

Adam · 12-02-2012, 10:01 PM

In video mode the minimum shutter speed depends on your framerate. So if you're shooting at 60 FPS, the minimum shutter speed would be 1/60s, and at 30 FPS it would be 1/30s, etc.

JeffP3456 · 12-02-2012, 10:03 PM

Originally posted by Adam

In video mode the minimum shutter speed depends on your framerate. So if you're shooting at 60 FPS, the minimum shutter speed would be 1/60s, and at 30 FPS it would be 1/30s, etc.

Hi Adam,
I am not in video mode, i am shooting stills in interval mode with the dial set to Av aperture set to 2.8 thus camera should adjust the Tv but like i said wont go below 1/25 , strange..

Adam · 12-02-2012, 10:05 PM

Originally posted by JeffP3456

Hi Adam,
I am not in video mode, i am shooting stills in interval mode with the dial set to Av aperture set to 2.8 thus camera should adjust the Tv but like i said wont go below 1/25 , strange..

Dunno why I thought you were in video mode- but could it have something to do with the interval shooting?

Adam
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JeffP3456 · 12-02-2012, 10:07 PM

I don't know, the manual is mum on any limitations that's why i decided to try to crowd source an answer!
it seems like such a strange limitation.

Boker · 12-02-2012, 10:27 PM

A good work around would go to manual mode or increase the iso until 1/25 would work

JeffP3456 · 12-02-2012, 10:58 PM

interestingly enough the k-01 appears to have a limit of 1/25 in any of the auto modes (P, Av, Tv).
what i find interesting is that i can find nothing in the manual about any limits. i wonder why this is limited?

Medium FormatPro · 12-03-2012, 01:37 AM

Try this series…

Use the iso switch on the back of the camera. Instead of using auto iso, use the lower iso option and set it manually to iso 200. Also make sure that the flash setting are all turned off.

12-02-2012, 09:55 PM	#1
JeffP3456 Forum Member Join Date: May 2012 Location: Palm Beach County, Florida Photos: Gallery Posts: 64	shutter speed question i set my k-01 up in Av mode and with interval shooting but as the scene darkened the camera refused to lower the shutter speed below 1/25th even after pushing iso up to 25k (thus many black pictures) I was surprised as the manual says auto shutter is from 30sec to 1/4000 and can't figure out why the camera wont drop the speed? anyone have any ideas? tia Jeff

12-02-2012, 10:01 PM	#2
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	In video mode the minimum shutter speed depends on your framerate. So if you're shooting at 60 FPS, the minimum shutter speed would be 1/60s, and at 30 FPS it would be 1/30s, etc. Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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12-02-2012, 10:03 PM	#3
JeffP3456 Forum Member Join Date: May 2012 Location: Palm Beach County, Florida Photos: Gallery Posts: 64 Original Poster	Originally posted by Adam In video mode the minimum shutter speed depends on your framerate. So if you're shooting at 60 FPS, the minimum shutter speed would be 1/60s, and at 30 FPS it would be 1/30s, etc. Hi Adam, I am not in video mode, i am shooting stills in interval mode with the dial set to Av aperture set to 2.8 thus camera should adjust the Tv but like i said wont go below 1/25 , strange..

12-02-2012, 10:05 PM	#4
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,595	Originally posted by JeffP3456 Hi Adam, I am not in video mode, i am shooting stills in interval mode with the dial set to Av aperture set to 2.8 thus camera should adjust the Tv but like i said wont go below 1/25 , strange.. Dunno why I thought you were in video mode- but could it have something to do with the interval shooting? Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

12-02-2012, 10:07 PM	#5
JeffP3456 Forum Member Join Date: May 2012 Location: Palm Beach County, Florida Photos: Gallery Posts: 64 Original Poster	I don't know, the manual is mum on any limitations that's why i decided to try to crowd source an answer! it seems like such a strange limitation.

12-02-2012, 10:27 PM	#6
Boker Senior Member Join Date: Jul 2012 Location: SW Florida Posts: 234	A good work around would go to manual mode or increase the iso until 1/25 would work

12-02-2012, 10:58 PM	#7
JeffP3456 Forum Member Join Date: May 2012 Location: Palm Beach County, Florida Photos: Gallery Posts: 64 Original Poster	interestingly enough the k-01 appears to have a limit of 1/25 in any of the auto modes (P, Av, Tv). what i find interesting is that i can find nothing in the manual about any limits. i wonder why this is limited?

12-03-2012, 01:37 AM	#8
Medium FormatPro Banned Join Date: Mar 2012 Location: Charleston & Pittsburgh Photos: Albums Posts: 1,668	Try this series… Use the iso switch on the back of the camera. Instead of using auto iso, use the lower iso option and set it manually to iso 200. Also make sure that the flash setting are all turned off.