Focal Plane In Relation To AF Lighted Points

JimC1101 · 12-08-2013, 07:58 AM

I had often wondered but never really had an answer....but I am sure one of you will know. I have a K-30 and when I have the AF set to 5 point. When I focus, in many instances I will show multiple lit AF points within the viewfinder. I am curious, if I have more than one point of focus, does that mean that the same items with the indicator are within the same focal plane and that is how there is focus in more than one item. I am sure that there is not multiple planes that will still focus sharply when taken. Just curious

Pablom · 12-08-2013, 08:39 AM

You are absolutely right

krebsy75 · 12-08-2013, 09:47 AM

One plane of focus (dictated by f stop) and multiple focus points with a margin of error.

12-08-2013, 07:58 AM	#1
JimC1101 Veteran Member Join Date: Aug 2010 Location: Fremont, Ca Photos: Albums Posts: 395	Focal Plane In Relation To AF Lighted Points I had often wondered but never really had an answer....but I am sure one of you will know. I have a K-30 and when I have the AF set to 5 point. When I focus, in many instances I will show multiple lit AF points within the viewfinder. I am curious, if I have more than one point of focus, does that mean that the same items with the indicator are within the same focal plane and that is how there is focus in more than one item. I am sure that there is not multiple planes that will still focus sharply when taken. Just curious

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
K30 vs K5 in relation to video	paranoia23	Video Recording and Processing	38	11-24-2012 07:08 AM
Portrait distance in relation to focal length	HoBykoYan	Pentax SLR Lens Discussion	13	03-29-2011 12:44 PM
Pic sizes in relation to megapixels	ProgMtl	Digital Processing, Software, and Printing	13	04-13-2010 09:45 AM
6x7 Focal Plane Shutter	Keenwa	Pentax Medium Format	7	10-31-2009 09:26 AM
When to use auto-select focal points for BIF	hinman	Pentax DSLR Discussion	23	05-19-2009 02:13 PM

12-08-2013, 08:39 AM	#2
Pablom Veteran Member Join Date: Feb 2010 Location: Usa Posts: 1,940	You are absolutely right

12-08-2013, 09:47 AM	#3
krebsy75 Veteran Member Join Date: Jun 2010 Location: Chester County, Pa. Posts: 804	One plane of focus (dictated by f stop) and multiple focus points with a margin of error.