Pentax K-7 'automatic horizon correction' feature !

Confused · 06-16-2009, 06:13 PM

Hi

To be honest, I'm slightly disappointed to learn that the K-7 can only compensate plus or minus one degree to keep horizon lines straight !

Quote:

Other, more revolutionary features include an Electronic Level function, which uses the Pentax K7's unique image stabilization system to actually rotate the sensor by plus or minus one degree to keep horizon lines straight. You can even shift the sensor left, right, up and down to fine-tune your image with the Pentax K7 mounted on a tripod with the Composition Adjustment feature, a unique use of sensor-shift image stabilization technology.

In fact, I was expecting at least 45 degrees correction, so that after consuming a few too many pints down my local pub, I wouldn't have to concern myself too much about standing bolt upright....hic !
Any comments....lol ?

Best regards
Richard

Ole · 06-16-2009, 06:22 PM

Don't be confused. Here is what you do:

Take a medium format camera, mount a Pentax fish-eye lens, and your negative format will be circular and the horizon will therefore always be level (or not)!

Circular Fisheye Camera

Pentaxor · 06-16-2009, 08:16 PM

Originally posted by Ole

Don't be confused. Here is what you do:

Take a medium format camera, mount a Pentax fish-eye lens, and your negative format will be circular and the horizon will therefore always be level (or not)!

Circular Fisheye Camera

LOL !!!

KungPOW · 06-16-2009, 08:41 PM

I thought it was +/- 1° with SR on, and +/- 2° with sr off.

In a preview article somewhere I saw a graphic that showed the +/- 1° and it was a greater change then i would have expected.

Unlocker · 06-17-2009, 02:17 AM

Posted this on the UK forum:-

1st shot is all the way to the right, 2nd to the left. It's only just occurred to me that I should have done one in the middle too (and maybe made some effort to get it level!) but is that good enough to get an idea?

kittykat46 · 06-17-2009, 03:45 AM

I think the K-7's horizon correction is done by actually rotating the sensor (not via software processing). There's obviously a limited room to carry out such corrections. Even so, 1-degree is quite visible in a photograph, and I definitely welcome the function.
Beyond 1-degree, the camera uses its on-board sensors to give you info in the viewfinder which way your camera is tilting.

06-16-2009, 06:13 PM	#1
Confused Inactive Account Join Date: Jul 2007 Location: London Posts: 1,067	Pentax K-7 'automatic horizon correction' feature ! Hi To be honest, I'm slightly disappointed to learn that the K-7 can only compensate plus or minus one degree to keep horizon lines straight ! Quote: Other, more revolutionary features include an Electronic Level function, which uses the Pentax K7's unique image stabilization system to actually rotate the sensor by plus or minus one degree to keep horizon lines straight. You can even shift the sensor left, right, up and down to fine-tune your image with the Pentax K7 mounted on a tripod with the Composition Adjustment feature, a unique use of sensor-shift image stabilization technology. In fact, I was expecting at least 45 degrees correction, so that after consuming a few too many pints down my local pub, I wouldn't have to concern myself too much about standing bolt upright....hic ! Any comments....lol ? Best regards Richard

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Lightroom 3 will feature lens correction	cezarL	Digital Processing, Software, and Printing	17	03-01-2011 12:28 AM
K-7 automatic Lens Correction?	shang	Pentax DSLR Discussion	3	07-16-2010 01:49 AM
K-7 Horizon correction.	LeDave	Pentax DSLR Discussion	2	12-11-2009 11:41 PM
Lens Distortion Correction Feature on K-7	Sailor	Pentax DSLR Discussion	1	07-12-2009 02:33 PM
Automatic lens distortion correction example	PentaxPoke	Pentax SLR Lens Discussion	6	02-03-2009 05:39 PM

06-16-2009, 06:22 PM	#2
Ole Administrator Join Date: Sep 2006 Location: Copenhagen, Denmark Photos: Gallery \| Albums Posts: 4,408	Don't be confused. Here is what you do: Take a medium format camera, mount a Pentax fish-eye lens, and your negative format will be circular and the horizon will therefore always be level (or not)! Circular Fisheye Camera

06-16-2009, 08:16 PM	#3
Pentaxor Veteran Member Join Date: May 2009 Location: Vancouver, B.C. Photos: Gallery Posts: 6,513	Originally posted by Ole Don't be confused. Here is what you do: Take a medium format camera, mount a Pentax fish-eye lens, and your negative format will be circular and the horizon will therefore always be level (or not)! Circular Fisheye Camera LOL !!!

06-16-2009, 08:41 PM	#4
KungPOW Veteran Member Join Date: Nov 2007 Location: Vancouver, Canada Photos: Gallery Posts: 1,699	I thought it was +/- 1° with SR on, and +/- 2° with sr off. In a preview article somewhere I saw a graphic that showed the +/- 1° and it was a greater change then i would have expected.

06-17-2009, 02:17 AM	#5
Unlocker Senior Member Join Date: Jan 2008 Location: UK Posts: 169	Posted this on the UK forum:- 1st shot is all the way to the right, 2nd to the left. It's only just occurred to me that I should have done one in the middle too (and maybe made some effort to get it level!) but is that good enough to get an idea?

06-17-2009, 03:45 AM	#6
kittykat46 Veteran Member Join Date: Dec 2007 Posts: 923	I think the K-7's horizon correction is done by actually rotating the sensor (not via software processing). There's obviously a limited room to carry out such corrections. Even so, 1-degree is quite visible in a photograph, and I definitely welcome the function. Beyond 1-degree, the camera uses its on-board sensors to give you info in the viewfinder which way your camera is tilting.

Thread Tools	Search this Thread
	Search this Thread: Advanced Search