Clackers' Beginners Tip 29: Focus Point Size

**clackers** · 07-09-2022, 05:15 PM - **1 Like**

Originally posted by swanlefitte

If a camera has live view, are the focus points still stolen when not in use or do they become part of the photo's pixels? I assume they are dedicated.

No, there are no PDAF pixels on the sensor. Live View uses a different focusing method called CDAF.

So, Live View Pentax gets you all the pixels for picture making where other mirrorless cameras don't.

By the way, Panasonic know that this is a problem and use only CDAF in their cameras, even the top of the line models, AFAIK.

Naturally, they will focus slower, so this is an intrinsic problem with a camera lacking a mirror and dedicated autofocus sensor.

Last edited by clackers; 07-10-2022 at 03:57 PM.

**clackers** · 07-10-2022, 04:54 PM - **2 Likes**

Originally posted by Sir Nameless

These are beginner tips. I'm sure Clackers didn't want to get into the finer points of magic and pixie dust in his brief post.

Exactly, Sir Nameless, but in the follow up discussion we should be free to get as complex as we older, sadder and more experienced togs like. It's our forum, too!

**Sir Nameless** · 07-11-2022, 12:02 PM - **1 Like**

Originally posted by clackers

Exactly, Sir Nameless, but in the follow up discussion we should be free to get as complex as we older, sadder and more experienced togs like. It's our forum, too!

Of course! My sense of humor sometimes runs on the dry side.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Clackers' Beginners Tip 26: Back Button Focus	clackers	Troubleshooting and Beginner Help	21	06-23-2022 03:21 PM
Clackers' Beginners Tip 17: Interaction	clackers	Troubleshooting and Beginner Help	2	04-30-2022 04:45 PM
Clackers' Beginners Tip 16: Focus Peaking	clackers	Troubleshooting and Beginner Help	3	04-08-2022 06:40 AM
Clackers' Beginners Tip Number 13: Pentax Dust Removal System	clackers	Troubleshooting and Beginner Help	5	03-18-2022 01:23 AM
Clackers' Beginners Tip 10: Copyright in EXIF	clackers	Troubleshooting and Beginner Help	19	02-28-2022 02:28 AM

07-09-2022, 05:15 PM - 1 Like	#16
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397 Original Poster	Originally posted by swanlefitte If a camera has live view, are the focus points still stolen when not in use or do they become part of the photo's pixels? I assume they are dedicated. No, there are no PDAF pixels on the sensor. Live View uses a different focusing method called CDAF. So, Live View Pentax gets you all the pixels for picture making where other mirrorless cameras don't. By the way, Panasonic know that this is a problem and use only CDAF in their cameras, even the top of the line models, AFAIK. Naturally, they will focus slower, so this is an intrinsic problem with a camera lacking a mirror and dedicated autofocus sensor. Last edited by clackers; 07-10-2022 at 03:57 PM.

07-10-2022, 04:54 PM - 2 Likes	#17
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397 Original Poster	Originally posted by Sir Nameless These are beginner tips. I'm sure Clackers didn't want to get into the finer points of magic and pixie dust in his brief post. Exactly, Sir Nameless, but in the follow up discussion we should be free to get as complex as we older, sadder and more experienced togs like. It's our forum, too!

07-11-2022, 12:02 PM - 1 Like	#18
Sir Nameless Site Supporter Join Date: Jul 2015 Location: Mass a chew sits Photos: Gallery Posts: 574	Originally posted by clackers Exactly, Sir Nameless, but in the follow up discussion we should be free to get as complex as we older, sadder and more experienced togs like. It's our forum, too! Of course! My sense of humor sometimes runs on the dry side.