RiceHigh's Pentax Blog: How is the Layout of an "Eighteen Point" AF System??

Monday, September 13, 2010

How is the Layout of an "Eighteen Point" AF System??

Here is an IQ Question! How to make an "18 Point" new AF system with symmetry? What is the possible layout??

If anyone can make it, please let us know! Otherwise, the previous rumour is fake, at least for the design and features of the specs on the AF part that were told (being have the "Portrait" and "Night" AF-*C* modes is just a JOKE!). In fact, it is just impossible to draft such a layout, which is actually non-existent, unless the layout is not symmetric or there is no central AF point in the dead centre!! :-o

N.B. Please note that having 18 crossed line AF sensors is NOT the same as an 18-point AF system!!

Comments (7)

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Zebooka · 756 weeks ago

I think it is fake.

We will get oldy 11-points AF system with 9-cross type and 2-linear.

Just because Pentax can't do new sensor.

They haven't used it in 645D either, which is much more top camera than K-5. Why? Because they can't.

PS: I will be hysterically happy if I'm wrong.

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loock · 756 weeks ago

Pentax AF sensor configuration, haiku edition :

* * * * *
* * * * * * *
* * * * * *

Pentax MZ-S 6 AF sensors ;) :

-
- - - - -

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Stefan · 756 weeks ago

The PENTAX 645D’s new SAFOX IX + wide-frame autofocus system features 11 sensor points (with nine cross-type sensors positioned in the middle) to assure the extra-high-precision focusing demanded of medium-format digital SLR cameras. To develop this sophisticated AF system, the entire optical system was redesigned, at the same time with the addition of the new functionality to analyze and make use of the light sources data in the field of view.

I don't know why pentax will developed one more AF system.

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marccoular · 756 weeks ago

May be something like this....a slight spot in the middle

* *
* * *
* * * * * * * *
* * *
* *

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Michael A. · 756 weeks ago

(big) IF 18, it could be 2 different sizes (and mode functions) in the center as other system has done, if memory serves me well and I'm not mistaken...Even center numbers don't make sense... think SPOT