Super long exposures shots

Richard B 13 · 10-26-2020, 03:17 AM

K 3 II ,Are there any special setting needed to be turned on or off when shooting with a ND filter. I was doing a 34 minute shot and it timed out after 2 minutes 17 seconds I am thinking it is a short in my remote Intervalometer. Not the camera itself. But thought I would touch base just to double check.

Thanks, Richard

Last edited by Richard B 13; 10-26-2020 at 11:04 AM.

VoiceOfReason · 10-26-2020, 05:43 AM - **1 Like**

I do long shots all the time for astrophotography. Make sure that your intervalometer is good and that you're in bulb mode. With the 2:17 it wouldn't have been in timed bulb mode, so that shouldn't be a problem. Also, make sure that your intervalometer is seated good.

**jatrax** · 10-26-2020, 08:50 AM - **1 Like**

Cover the viewfinder. Shots that long will get light through the viewfinder enough to ruin it.

**Bob 256** · 10-26-2020, 09:43 AM - **1 Like**

Make sure your camera batteries are fully charged - current is drawn all the while the exposure is being made and if they run out, end of the exposure. You didn't mention the model of your camera which would also help answer the question.

Richard B 13 · 10-26-2020, 11:04 AM

K3 ii

---------- Post added 10-26-20 at 02:08 PM ----------

Originally posted by VoiceOfReason

I do long shots all the time for astrophotography. Make sure that your intervalometer is good and that you're in bulb mode. With the 2:17 it wouldn't have been in timed bulb mode, so that shouldn't be a problem. Also, make sure that your intervalometer is seated good.

Yes I was in Bulb and I do believe it was the intervalometer short I just got another one wireless.

C_Jones · 10-26-2020, 03:04 PM

This may be information you already know, but I will mention it anyway.

I also cover my viewfinder as has been mentioned already, and as has been said it keeps the light from entering the camera which may overexpose the shot. I use the end of a black sock that I cut off for a cover. I also usually use Manual or Bulb mode for long exposure shots with my ND filter(s), depending on the time I need for the shot and/or filter density.

**scc** · 11-04-2020, 12:11 PM

Mmmm
Unless the viewfinder is heavily illuminated, the mirror up should prevent light to enter the mirror box and impact the sensor. The metering system is not used in astrophotography, bulb mode is needed.

**jatrax** · 11-04-2020, 12:59 PM

Originally posted by scc

Unless the viewfinder is heavily illuminated, the mirror up should prevent light to enter the mirror box and impact the sensor.

"Should" but it doesn't. I did a test of this some years ago and posted it here. On long exposures light does cause streaks and inaccurate exposure if the viewfinder is not covered. In astrophotography its not an issue because its dark out. Shooting long exposure waterfalls or other daylight long exposures you need to cover the viewfinder.

10-26-2020, 03:17 AM	#1
Richard B 13 Junior Member Join Date: Apr 2014 Posts: 48	Super long exposures shots K 3 II ,Are there any special setting needed to be turned on or off when shooting with a ND filter. I was doing a 34 minute shot and it timed out after 2 minutes 17 seconds I am thinking it is a short in my remote Intervalometer. Not the camera itself. But thought I would touch base just to double check. Thanks, Richard Last edited by Richard B 13; 10-26-2020 at 11:04 AM.

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10-26-2020, 05:43 AM - 1 Like	#2
VoiceOfReason Site Supporter Join Date: Jun 2010 Location: Mishawaka IN area Photos: Albums Posts: 6,124	I do long shots all the time for astrophotography. Make sure that your intervalometer is good and that you're in bulb mode. With the 2:17 it wouldn't have been in timed bulb mode, so that shouldn't be a problem. Also, make sure that your intervalometer is seated good.

10-26-2020, 08:50 AM - 1 Like	#3
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,992	Cover the viewfinder. Shots that long will get light through the viewfinder enough to ruin it.

10-26-2020, 09:43 AM - 1 Like	#4
Bob 256 Site Supporter Join Date: Jun 2008 Location: Idaho Photos: Gallery Posts: 2,379	Make sure your camera batteries are fully charged - current is drawn all the while the exposure is being made and if they run out, end of the exposure. You didn't mention the model of your camera which would also help answer the question.

10-26-2020, 11:04 AM	#5
Richard B 13 Junior Member Join Date: Apr 2014 Posts: 48 Original Poster	K3 ii ---------- Post added 10-26-20 at 02:08 PM ---------- Originally posted by VoiceOfReason I do long shots all the time for astrophotography. Make sure that your intervalometer is good and that you're in bulb mode. With the 2:17 it wouldn't have been in timed bulb mode, so that shouldn't be a problem. Also, make sure that your intervalometer is seated good. Yes I was in Bulb and I do believe it was the intervalometer short I just got another one wireless.

10-26-2020, 03:04 PM	#6
C_Jones Pentaxian Join Date: Sep 2012 Location: NY Photos: Gallery \| Albums Posts: 6,086	This may be information you already know, but I will mention it anyway. I also cover my viewfinder as has been mentioned already, and as has been said it keeps the light from entering the camera which may overexpose the shot. I use the end of a black sock that I cut off for a cover. I also usually use Manual or Bulb mode for long exposure shots with my ND filter(s), depending on the time I need for the shot and/or filter density.

11-04-2020, 12:11 PM	#7
scc Loyal Site Supporter Join Date: Dec 2012 Posts: 165	Mmmm Unless the viewfinder is heavily illuminated, the mirror up should prevent light to enter the mirror box and impact the sensor. The metering system is not used in astrophotography, bulb mode is needed.

11-04-2020, 12:59 PM	#8
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,992	Originally posted by scc Unless the viewfinder is heavily illuminated, the mirror up should prevent light to enter the mirror box and impact the sensor. "Should" but it doesn't. I did a test of this some years ago and posted it here. On long exposures light does cause streaks and inaccurate exposure if the viewfinder is not covered. In astrophotography its not an issue because its dark out. Shooting long exposure waterfalls or other daylight long exposures you need to cover the viewfinder.