K5 Startrail, what am I doing wrong

**Clarkey** · 11-12-2010, 07:27 PM

For the K-7 - dead right, unless you shoot multiple 29 second exposures. It's a pain in the proverbial for stacking, or for timelapses.

telfish · 11-12-2010, 08:47 PM

Originally posted by kittykat46

I found this useful when working the camera in almost total darkness.

It has a headband and leaves both hands free to work your gear. And uses AAA batteries....

Amazon.com: Energizer 3 LED Headlight: Sports & Outdoors

There are cheaper types available, but this is the only one in the price range I found with the Red Low-Light LED which helps preserve your night-vision

I have one of those somewhere I use for night fishing, great idea. I will look it out.

Spent most of this evening taking more trails and shorter pics, tried Jupiter but just could not keep the camera stable enough to keep it in frame with the bigma and tc's.

melander · 11-13-2010, 02:11 AM

try using a red light instead of a bright white light in your flashlight, wont affect your night vision

Pentax Lover · 11-21-2010, 08:50 PM

Originally posted by krp

You only need to do a DFS if there is a lot of noise. It looks like you have pretty dark skies you might even want to try a larger aperture next time. What lens did you use?

What is DFS? please enlighten me, thanks.

Hypocorism · 11-21-2010, 09:30 PM

Originally posted by Pentax Lover

What is DFS? please enlighten me, thanks.

Dark Frame Subtraction -- it's one of the informal names (acronyms) for that secretive behaviour you'll never read about in a manual for your Pentax camera, and subsequently be "left in the dark" about what it's doing that takes so long.

The Wikipedia article is not extensive in itself but does incl. the usual ref links that are useful for cross-check cred:
Dark frame subtraction - Wikipedia, the free encyclopedia

There are some great reads off here describing it:
Dark Frame Subtraction - Google Search

.R.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Is there something wrong with my DA 35mm?	germar	Pentax SLR Lens Discussion	11	11-12-2010 03:02 PM
What's wrong with my A 28/2.8?	Rense	Pentax SLR Lens Discussion	5	01-10-2010 06:16 AM
this is all new to me what am I doing wrong?	janstew	Digital Processing, Software, and Printing	4	12-22-2009 11:56 AM
what have I done wrong here?	johngs	Post Your Photos!	12	01-28-2009 01:58 AM
What's right and what's wrong?	dws1117	Photo Critique	2	01-08-2008 09:13 PM

11-12-2010, 07:27 PM	#91
Clarkey Site Supporter Join Date: Jan 2008 Location: Brampton, ON, Canada Photos: Gallery Posts: 2,456	For the K-7 - dead right, unless you shoot multiple 29 second exposures. It's a pain in the proverbial for stacking, or for timelapses.

11-12-2010, 08:47 PM	#92
telfish Veteran Member Join Date: Aug 2009 Location: NY Posts: 407 Original Poster	Originally posted by kittykat46 I found this useful when working the camera in almost total darkness. It has a headband and leaves both hands free to work your gear. And uses AAA batteries.... Amazon.com: Energizer 3 LED Headlight: Sports & Outdoors There are cheaper types available, but this is the only one in the price range I found with the Red Low-Light LED which helps preserve your night-vision I have one of those somewhere I use for night fishing, great idea. I will look it out. Spent most of this evening taking more trails and shorter pics, tried Jupiter but just could not keep the camera stable enough to keep it in frame with the bigma and tc's.

11-13-2010, 02:11 AM	#93
melander Veteran Member Join Date: Jul 2008 Location: Sweden, Umea Posts: 876	try using a red light instead of a bright white light in your flashlight, wont affect your night vision

11-21-2010, 08:50 PM	#94
Pentax Lover Forum Member Join Date: Oct 2010 Location: Silsbee, TX Posts: 73	Originally posted by krp You only need to do a DFS if there is a lot of noise. It looks like you have pretty dark skies you might even want to try a larger aperture next time. What lens did you use? What is DFS? please enlighten me, thanks.

11-21-2010, 09:30 PM	#95
Hypocorism Veteran Member Join Date: Sep 2010 Location: Melbourne .au Posts: 623	Originally posted by Pentax Lover What is DFS? please enlighten me, thanks. Dark Frame Subtraction -- it's one of the informal names (acronyms) for that secretive behaviour you'll never read about in a manual for your Pentax camera, and subsequently be "left in the dark" about what it's doing that takes so long. The Wikipedia article is not extensive in itself but does incl. the usual ref links that are useful for cross-check cred: Dark frame subtraction - Wikipedia, the free encyclopedia There are some great reads off here describing it: Dark Frame Subtraction - Google Search .R.