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Nicolas06 · 02-14-2016, 07:31 AM

Originally posted by jaad75

I have linked a comparison at ISO100. That's a difference with noise level in the shadows, which defines the dynamic range. In that case (all images downscaled) it is similar to DxO's "Print" tab comparison.

Sure and I agree, question is more if you are after low contrast pictures like biz-engineer or otherwise rely on tripods and picture stacking and then the reduced dynamic is of no importance...

Or if you like HDR, to capture wide dynamic range scenes

I admit myself that 50MP is not that interresting, in particular compared to 36-42MP and that the dynamic range may be more usefull, but that depend a lot on your practice.

Mistral75 · 02-14-2016, 07:35 AM

Originally posted by biz-engineer

You stretched the K-3 AF points to match the 1Dx and D5 matrix, in that case, of course, the K-3 AF has the same frame coverage as any camera ! Did you try to layout the K30 AF module (with a bit of mouse stretch) on top of the D5, I sure both AF modules could match.

The stretch aims at matching the screens, not the matrix. beholder3 took the precaution to write a caveat: "if they manage to scale up the whole coverage from APSC to FF using different AF optics."

Ricoh filed a patent on this; has anyone kept a link?

beholder3 · 02-14-2016, 07:37 AM

Originally posted by Mistral75

The stretch aims at matching the screens, not the matrix. beholder3 took the precaution to write a caveat: "if they manage to scale up the whole coverage from APSC to FF using different AF optics."

Yes, for the K-1 we need to hope for a new solution.

The coverage in the K-3 already is as depicted.

Nicolas06 · 02-14-2016, 07:41 AM

Originally posted by biz-engineer

You stretched the K-3 AF points to match the 1Dx and D5 matrix, in that case, of course, the K-3 AF has the same frame coverage as any camera ! Did you try to layout the K30 AF module (with a bit of mouse stretch) on top of the D5, I sure both AF modules could match.

But they very likely match, the sensors of K30 are not as many, not as precise, but I think they cover about the same surface in % as a K3 rougly. Now does that make the K30 AF as good? Hell no, my father just got a K3 and can tell you there a great difference.

Ok D610 body reused an APSC sensor without any tunning and change and so the covered area is very small in %, but this doesn't mean that all other manufacturer have to do the same.

**monochrome** · 02-14-2016, 07:42 AM

I'm really looking forward to coming back here in about two weeks.

Zygonyx · 02-14-2016, 07:46 AM - **1 Like**

Originally posted by Mistral75

The stretch aims at matching the screens, not the matrix. beholder3 took the precaution to write a caveat: "if they manage to scale up the whole coverage from APSC to FF using different AF optics."

Ricoh filed a patent on this; has anyone kept a link?

This one ?

Ricoh's patent for contrast AF by the AE sensor | Pentax Rumors

Actually we all should thank the editor of PentaxRumors.com : 36 news in about as many days is a significant and great performance...

Nicolas06 · 02-14-2016, 07:50 AM

Originally posted by Zygonyx

This one ?

Ricoh's patent for contrast AF by the AE sensor | Pentax Rumors

Was quite obvious to do except the sensor is not yet high resolution enough... but I guess it would be quite easy to get a few MP sensors, the problem would be only the processing power.

jaad75 · 02-14-2016, 07:51 AM

Originally posted by Zygonyx

This one ?

Ricoh's patent for contrast AF by the AE sensor | Pentax Rumors

No, this one:
Ricoh ?????????AF?????????????????So-net???

Mistral75 · 02-14-2016, 07:53 AM

Originally posted by Zygonyx

This one ?

Ricoh's patent for contrast AF by the AE sensor | Pentax Rumors

No, the one about an optical device in front of the AF module allowing to expand its coverage.

Zygonyx · 02-14-2016, 07:54 AM

Jaad's got the right one.

**vcollerp** · 02-14-2016, 07:56 AM

Originally posted by monochrome

I'm really looking forward to coming back here in about two weeks.

Only three days and a few hours

https://www.facebook.com/pentaxsa

**ffking** · 02-14-2016, 07:59 AM

Originally posted by vcollerp

Only three days and a few hours

I think he meant when the AF argument is dying down

Zygonyx · 02-14-2016, 08:00 AM

That's effectively become official.

**monochrome** · 02-14-2016, 08:00 AM - **1 Like**

Originally posted by vcollerp

Only three days and a few hours

https://www.facebook.com/pentaxsa

Yes ^^ [EDIT], and I want to let some time go by first, then read the entire, evolving thread as a poster argues about facts.

Mistral75 · 02-14-2016, 08:02 AM

Originally posted by jaad75

No, this one:
Ricoh ?????????AF?????????????????So-net???

Yes, thank you. I bet something like that is used in K-1. And imagine what you would get with a medium format camera!

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02-14-2016, 07:31 AM	#271
Nicolas06 Veteran Member Join Date: Nov 2013 Posts: 4,854	Originally posted by jaad75 I have linked a comparison at ISO100. That's a difference with noise level in the shadows, which defines the dynamic range. In that case (all images downscaled) it is similar to DxO's "Print" tab comparison. Sure and I agree, question is more if you are after low contrast pictures like biz-engineer or otherwise rely on tripods and picture stacking and then the reduced dynamic is of no importance... Or if you like HDR, to capture wide dynamic range scenes I admit myself that 50MP is not that interresting, in particular compared to 36-42MP and that the dynamic range may be more usefull, but that depend a lot on your practice.

02-14-2016, 07:35 AM	#272
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by biz-engineer You stretched the K-3 AF points to match the 1Dx and D5 matrix, in that case, of course, the K-3 AF has the same frame coverage as any camera ! Did you try to layout the K30 AF module (with a bit of mouse stretch) on top of the D5, I sure both AF modules could match. The stretch aims at matching the screens, not the matrix. *beholder3* took the precaution to write a caveat: "if they manage to scale up the whole coverage from APSC to FF using different AF optics." Ricoh filed a patent on this; has anyone kept a link?

02-14-2016, 07:37 AM	#273
beholder3 Pentaxian Join Date: Dec 2011 Posts: 3,112	Originally posted by Mistral75 The stretch aims at matching the screens, not the matrix. *beholder3* took the precaution to write a caveat: "if they manage to scale up the whole coverage from APSC to FF using different AF optics." Yes, for the K-1 we need to hope for a new solution. The coverage in the K-3 already is as depicted.

02-14-2016, 07:41 AM	#274
Nicolas06 Veteran Member Join Date: Nov 2013 Posts: 4,854	Originally posted by biz-engineer You stretched the K-3 AF points to match the 1Dx and D5 matrix, in that case, of course, the K-3 AF has the same frame coverage as any camera ! Did you try to layout the K30 AF module (with a bit of mouse stretch) on top of the D5, I sure both AF modules could match. But they very likely match, the sensors of K30 are not as many, not as precise, but I think they cover about the same surface in % as a K3 rougly. Now does that make the K30 AF as good? Hell no, my father just got a K3 and can tell you there a great difference. Ok D610 body reused an APSC sensor without any tunning and change and so the covered area is very small in %, but this doesn't mean that all other manufacturer have to do the same.

02-14-2016, 07:42 AM	#275
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	I'm really looking forward to coming back here in about two weeks.

02-14-2016, 07:46 AM - 1 Like	#276
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Originally posted by Mistral75 The stretch aims at matching the screens, not the matrix. *beholder3* took the precaution to write a caveat: "if they manage to scale up the whole coverage from APSC to FF using different AF optics." Ricoh filed a patent on this; has anyone kept a link? This one ? Ricoh's patent for contrast AF by the AE sensor \| Pentax Rumors Actually we all should thank the editor of PentaxRumors.com : 36 news in about as many days is a significant and great performance...

02-14-2016, 07:50 AM	#277
Nicolas06 Veteran Member Join Date: Nov 2013 Posts: 4,854	Originally posted by Zygonyx This one ? Ricoh's patent for contrast AF by the AE sensor \| Pentax Rumors Was quite obvious to do except the sensor is not yet high resolution enough... but I guess it would be quite easy to get a few MP sensors, the problem would be only the processing power.

02-14-2016, 07:51 AM	#278
jaad75 Veteran Member Join Date: Sep 2007 Location: Cracow Posts: 457	Originally posted by Zygonyx This one ? Ricoh's patent for contrast AF by the AE sensor \| Pentax Rumors No, this one: Ricoh ?????????AF?????????????????So-net???

02-14-2016, 07:53 AM	#279
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by Zygonyx This one ? Ricoh's patent for contrast AF by the AE sensor \| Pentax Rumors No, the one about an optical device in front of the AF module allowing to expand its coverage.

02-14-2016, 07:54 AM	#280
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	Jaad's got the right one.

02-14-2016, 07:56 AM	#281
vcollerp Site Supporter Join Date: Dec 2011 Location: Vereeniging South Africa Posts: 208	Originally posted by monochrome I'm really looking forward to coming back here in about two weeks. Only three days and a few hours https://www.facebook.com/pentaxsa

02-14-2016, 07:59 AM	#282
ffking Site Supporter Join Date: Nov 2015 Location: Old South Wales Posts: 6,039	Originally posted by vcollerp Only three days and a few hours I think he meant when the AF argument is dying down

02-14-2016, 08:00 AM	#283
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	That's effectively become official.

02-14-2016, 08:00 AM - 1 Like	#284
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	Originally posted by vcollerp Only three days and a few hours https://www.facebook.com/pentaxsa Yes ^^ [EDIT], and I want to let some time go by first, then read the entire, evolving thread as a poster argues about facts.

02-14-2016, 08:02 AM	#285
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by jaad75 No, this one: Ricoh ?????????AF?????????????????So-net??? Yes, thank you. I bet something like that is used in K-1. And imagine what you would get with a medium format camera!

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