Some mirrorless options for Pentax

Started Aug 25, 2018 | Discussions
Barry Pearson
OP Barry Pearson Veteran Member • Posts: 8,723
Update @ 2018-09-08

I've now come to the conclusion that "Option 3: New mount for mirrorless cameras " is the best way for Ricoh/Pentax to response to the increasing trend towards new-mount mirrorless cameras.

This means the lens-mount adapter has both tactical and strategic importance.
I therefore started a new thread:
K-mount adapters for Pentax new-mount cameras

I illustrated what this might mean to me at:
My new-mount mirrorless walk-around system

Today I posted a summary of my investigation and analysis so far:
Summary of "adapters" @ 2018-09-08

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TacticDesigns
TacticDesigns Veteran Member • Posts: 6,299
Ricoh GRIII - has phase-detect AF on sensor

Did you guys notice that the Ricoh GR III is to have on-sensor phase-detect AF?

That's huge!

Imagine that in a mirrorless!!!

Heck. I'd like to see a Ricoh GR III with a lens mount!

Take care & Happy Shooting!

-- hide signature --
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Roland Karlsson Forum Pro • Posts: 28,398
Re: Ricoh GRIII - has phase-detect AF on sensor

TacticDesigns wrote:

Did you guys notice that the Ricoh GR III is to have on-sensor phase-detect AF?

That's huge!

Imagine that in a mirrorless!!!

Heck. I'd like to see a Ricoh GR III with a lens mount!

Take care & Happy Shooting!

Hmmmm ... this is more or less standard om mirrorless today.

-- hide signature --

/Roland
Kalpanika X3F tools:
https://github.com/kalpanika/x3f

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TacticDesigns
TacticDesigns Veteran Member • Posts: 6,299
Re: Ricoh GRIII - has phase-detect AF on sensor

Roland Karlsson wrote:

TacticDesigns wrote:

Did you guys notice that the Ricoh GR III is to have on-sensor phase-detect AF?

That's huge!

Imagine that in a mirrorless!!!

Heck. I'd like to see a Ricoh GR III with a lens mount!

Take care & Happy Shooting!

Hmmmm ... this is more or less standard om mirrorless today.

But isn't this a first for Pentax?

The Pentax K-01 didn't have on-sensor phase-detect AF.

Neither does any of the Pentax Q cameras.

Ricoh working with on-sensor phase-detect, I find, pretty cool!

Take care & Happy Shooting!

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Alex Sarbu Forum Pro • Posts: 10,253
Re: Ricoh GRIII - has phase-detect AF on sensor

TacticDesigns wrote:

Roland Karlsson wrote:

TacticDesigns wrote:

Did you guys notice that the Ricoh GR III is to have on-sensor phase-detect AF?

That's huge!

Imagine that in a mirrorless!!!

Heck. I'd like to see a Ricoh GR III with a lens mount!

Take care & Happy Shooting!

Hmmmm ... this is more or less standard om mirrorless today.

But isn't this a first for Pentax?

Nope: see the k-70.

Alex

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bob5050 Senior Member • Posts: 1,125
Re: Ricoh GRIII - has phase-detect AF on sensor

Alex Sarbu wrote:

TacticDesigns wrote:

But isn't this a first for Pentax?

Nope: see the k-70.

Alex

Right. See detail text from K-70 body listing on Amazon: " Image plane phase-matching elements are embedded on the [chip] surface which allows Hybrid AF in Live View mode."

Like the OP, however, I still see this as encouraging--an indication that Pentax already has in-house the chip, supply, support circuitry, and software to produce an APS-C MILC with PDAF. An L-mount alliance announcement would indeed be interesting.

bobD

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TacticDesigns
TacticDesigns Veteran Member • Posts: 6,299
Re: Ricoh GRIII - has phase-detect AF on sensor

bob5050 wrote:

Alex Sarbu wrote:

TacticDesigns wrote:

But isn't this a first for Pentax?

Nope: see the k-70.

+1

I stand corrected!

I'm going to have to read up more about the Pentax K-70!

Alex

Right. See detail text from K-70 body listing on Amazon: " Image plane phase-matching elements are embedded on the [chip] surface which allows Hybrid AF in Live View mode."

Like the OP, however, I still see this as encouraging--an indication that Pentax already has in-house the chip, supply, support circuitry, and software to produce an APS-C MILC with PDAF.

+1

I think it is very exciting to hear about more and more about on-sensor PDAF!

It has me looking at the Ricoh GR III !!!

Take care & Happy Shooting!

An L-mount alliance announcement would indeed be interesting.

bobD

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Parinya Ekparinya New Member • Posts: 4
Re: Ricoh GRIII - has phase-detect AF on sensor
1

Isn't PDAF in K-70 only work for video? Only contrast detection autofocus is available for still with the live view. I believe the same thing goes for KP.

It seems like the sensor-based PDAF is going to work for still in the upcoming GR III.

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DS21 Senior Member • Posts: 2,416
Re: Ricoh GRIII - has phase-detect AF on sensor

Parinya Ekparinya wrote:

Isn't PDAF in K-70 only work for video? Only contrast detection autofocus is available for still with the live view. I believe the same thing goes for KP.

It seems like the sensor-based PDAF is going to work for still in the upcoming GR III.

Yes, for K-70  only with one lens, the 55-300 PLM. The other PLM lenses for this feature are coming sometime in next 10 years or so, after the FF lens road map is completed.

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DiffractionLtd
DiffractionLtd Senior Member • Posts: 2,836
Re: Ricoh GRIII - has phase-detect AF on sensor

TacticDesigns wrote:

Did you guys notice that the Ricoh GR III is to have on-sensor phase-detect AF?

That's huge!

Imagine that in a mirrorless!!!

Heck. I'd like to see a Ricoh GR III with a lens mount!

Take care & Happy Shooting!

Huge or virtually pointless?  Give it a 300mm lens and then it'll really be worth more than contrast.

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