K1 face detection in live view

biz-engineer · 03-18-2018, 06:37 AM

Trying out the face recognition in live view with my K1. When we photograph a group of persons, the display may show more than one face with a little square on. The yellow little square is over the top of the face the camera will focus on, and other square are shown in white over the top of other faces. How do we select the face we want to focus on?

Last edited by biz-engineer; 03-18-2018 at 07:34 AM.

amoringello · 03-18-2018, 07:55 AM

The face recognition is pretty primitive. It picks one, apparently at random, and you cannot choose. I've tried every button and dial both while it was detecting faces, as well as after focus was locked.
I guess your only options is to keep half-pressing and releasing the focus button. A different face might be chosen. Eventually you might get the one you want. :-(

biz-engineer · 03-18-2018, 12:36 PM

Face detection is not so bad, it seems to be detecting faces when eyes are well defined, it is not a bad thing. I've just done an experiment with pictures, the detection is instant fast with asian faces and faces with dark eyes. Face detection hesitates a bit with blue eyes, I guess the algorithm is looking for a pair of contrasty circles in the image. When focusing on a group of people...hum, I'd have expected to be able to move face selection with the 4 ways controller but it doesn't work.

ppohja · 03-18-2018, 01:32 PM

There's a face detection in K-1? How can I turn it off?

biz-engineer · 03-18-2018, 01:51 PM

Originally posted by ppohja

There's a face detection in K-1? How can I turn it off?

Change AF mode, as simple as that.

h4yn0nnym0u5e · 03-18-2018, 03:06 PM

Originally posted by ppohja

There's a face detection in K-1? How can I turn it off?

See p53 of the manual. But note that you can't turn it off in Auto mode...

biz-engineer · 03-18-2018, 10:40 PM

Originally posted by h4yn0nnym0u5e

See p53 of the manual. But note that you can't turn it off in Auto mode...

True. There isn't much detail at page 53, they only say how to turn this face detection mode on/off.

03-18-2018, 06:37 AM	#1
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232	K1 face detection in live view Trying out the face recognition in live view with my K1. When we photograph a group of persons, the display may show more than one face with a little square on. The yellow little square is over the top of the face the camera will focus on, and other square are shown in white over the top of other faces. How do we select the face we want to focus on? Last edited by biz-engineer; 03-18-2018 at 07:34 AM.

03-18-2018, 12:36 PM	#3
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232 Original Poster	Face detection is not so bad, it seems to be detecting faces when eyes are well defined, it is not a bad thing. I've just done an experiment with pictures, the detection is instant fast with asian faces and faces with dark eyes. Face detection hesitates a bit with blue eyes, I guess the algorithm is looking for a pair of contrasty circles in the image. When focusing on a group of people...hum, I'd have expected to be able to move face selection with the 4 ways controller but it doesn't work. Last edited by biz-engineer; 03-18-2018 at 01:04 PM.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
live view noise and smc dfa 100mm f2.8 macro lens not focusing in live view	tommygunn84	Troubleshooting and Beginner Help	7	11-24-2016 08:59 PM
Typical live view humming, when not in live view.	Unregistered User	Pentax K-1 & K-1 II	8	05-05-2016 02:20 AM
Face Recognition	secateurs	Pentax K-5 & K-5 II	12	02-15-2012 03:18 PM
K5 - Face recognition feature for anything else but "faces"?	jpzk	Pentax K-5 & K-5 II	12	02-04-2012 06:02 PM
Face recognition on instant preview for Pentax.	vitalsax	Pentax DSLR Discussion	13	01-14-2009 07:15 PM

03-18-2018, 07:55 AM	#2
amoringello Veteran Member Join Date: May 2008 Location: Virginia, USA Photos: Gallery Posts: 1,562	The face recognition is pretty primitive. It picks one, apparently at random, and you cannot choose. I've tried every button and dial both while it was detecting faces, as well as after focus was locked. I guess your only options is to keep half-pressing and releasing the focus button. A different face might be chosen. Eventually you might get the one you want. :-(

03-18-2018, 01:32 PM	#4
ppohja Senior Member Join Date: Jan 2013 Photos: Gallery \| Albums Posts: 194	There's a face detection in K-1? How can I turn it off?

03-18-2018, 01:51 PM	#5
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232 Original Poster	Originally posted by ppohja There's a face detection in K-1? How can I turn it off? Change AF mode, as simple as that.

03-18-2018, 03:06 PM	#6
h4yn0nnym0u5e Veteran Member Join Date: Mar 2016 Location: Cambridgeshire, UK Photos: Albums Posts: 333	Originally posted by ppohja There's a face detection in K-1? How can I turn it off? See p53 of the manual. But note that you can't turn it off in Auto mode...

03-18-2018, 10:40 PM	#7
biz-engineer Pentaxian Join Date: Feb 2015 Photos: Gallery Posts: 12,232 Original Poster	Originally posted by h4yn0nnym0u5e See p53 of the manual. But note that you can't turn it off in Auto mode... True. There isn't much detail at page 53, they only say how to turn this face detection mode on/off.