Pentax O-GPS1 vs K3 ii

Danaher Dempsey · 01-08-2016, 09:43 PM - **1 Like**

It has been stated that the
K3 ii Astrotracer function is NOT as good as
the K3 with the
Pentax O-GPS1

It is reported that star trails show up sooner on the K3 ii
and that the K3 with O-GPS1 can get at least double the exposure time

before star trails appear.

Comments please.

**jatrax** · 01-08-2016, 10:24 PM

Source of the comments?

Adam · 01-08-2016, 11:10 PM

Sounds like calibration gone wrong.

jawsy · 01-09-2016, 04:01 AM - **2 Likes**

BS...

Conqueror · 01-09-2016, 10:17 AM

Originally posted by jawsy

BS...

Danaher Dempsey · 01-10-2016, 09:19 AM

On Youtube the "photouniverse" fellow
had a k3 with the astrotracer unit attached and a new k3 ii

The k3 was producing better results than the k3 ii
for astrophotography. The k3 tracked significantly better than the k3 ii.

C_Jones · 01-10-2016, 09:39 AM

As has been iterated, if GPS has been precisely calibrated in either case, how could there be a difference. That is like saying that the GPS locator or compass has quit when it has not.

I have the O-GPS1 unit on a K-5IIS and also have a K-3II. I have never experienced a fault with either system.

I know there are a lot of components that can contribute to any type of shooting, but if the unit is precisely calibrated and has power I would not find fault. If there was a fault like that, I would assume it would have been known long before this.

I am just weighing the factors.

**JimS_256** · 01-10-2016, 05:24 PM

Originally posted by Danaher Dempsey

On Youtube the "photouniverse" fellow
had a k3 with the astrotracer unit attached and a new k3 ii

The k3 was producing better results than the k3 ii
for astrophotography. The k3 tracked significantly better than the k3 ii.

I tried searching for this video and came up empty. Can you post a link?

I have a K-50 with an O-GPS as well as the K-3 II so I'm interested in this topic but without seeing how the original test was conducted it's hard to make a truly informed comment.

Danaher Dempsey · 01-21-2016, 07:34 PM

Jim S.

I did some searching on Youtube in "Photouniverse" and now I cannot find the original content.

Sorry.

-- Dan

01-08-2016, 09:43 PM - 1 Like	#1
Danaher Dempsey Forum Member Join Date: Sep 2015 Posts: 50	Pentax O-GPS1 vs K3 ii It has been stated that the K3 ii Astrotracer function is NOT as good as the K3 with the Pentax O-GPS1 It is reported that star trails show up sooner on the K3 ii and that the K3 with O-GPS1 can get at least double the exposure time before star trails appear. Comments please.

01-08-2016, 11:10 PM	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,594	Sounds like calibration gone wrong. 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:

01-10-2016, 09:19 AM	#6
Danaher Dempsey Forum Member Join Date: Sep 2015 Posts: 50 Original Poster	Source of original comment On Youtube the "photouniverse" fellow had a k3 with the astrotracer unit attached and a new k3 ii The k3 was producing better results than the k3 ii for astrophotography. The k3 tracked significantly better than the k3 ii.

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01-08-2016, 10:24 PM	#2
jatrax Site Supporter Join Date: May 2010 Location: Washington Cascades Photos: Gallery \| Albums Posts: 12,991	Source of the comments?

01-09-2016, 04:01 AM - 2 Likes	#4
jawsy Veteran Member Join Date: Mar 2009 Location: Australia Photos: Gallery \| Albums Posts: 422	BS...

01-09-2016, 10:17 AM	#5
Conqueror Veteran Member Join Date: Dec 2011 Location: UK Posts: 440	Originally posted by jawsy BS...

01-10-2016, 09:39 AM	#7
C_Jones Pentaxian Join Date: Sep 2012 Location: NY Photos: Gallery \| Albums Posts: 6,084	As has been iterated, if GPS has been precisely calibrated in either case, how could there be a difference. That is like saying that the GPS locator or compass has quit when it has not. I have the O-GPS1 unit on a K-5IIS and also have a K-3II. I have never experienced a fault with either system. I know there are a lot of components that can contribute to any type of shooting, but if the unit is precisely calibrated and has power I would not find fault. If there was a fault like that, I would assume it would have been known long before this. I am just weighing the factors.

01-10-2016, 05:24 PM	#8
JimS_256 Loyal Site Supporter Join Date: Nov 2013 Posts: 1,107	Originally posted by Danaher Dempsey On Youtube the "photouniverse" fellow had a k3 with the astrotracer unit attached and a new k3 ii The k3 was producing better results than the k3 ii for astrophotography. The k3 tracked significantly better than the k3 ii. I tried searching for this video and came up empty. Can you post a link? I have a K-50 with an O-GPS as well as the K-3 II so I'm interested in this topic but without seeing how the original test was conducted it's hard to make a truly informed comment.

01-21-2016, 07:34 PM	#9
Danaher Dempsey Forum Member Join Date: Sep 2015 Posts: 50 Original Poster	Jim S. I did some searching on Youtube in "Photouniverse" and now I cannot find the original content. Sorry. -- Dan

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