New K-series DSLR under development to be exhibited

photoptimist · 11-04-2019, 08:20 AM - **2 Likes**

Originally posted by ecostigny

I wonder if the sensor has enough back-and-forth motion range to accommodate the focus stacking requirements. I'm not a mechanical engineer, so I cannot guess what would be needed.

"It's complicated"!!

The amount of stacking possible with sensor movement is extremely sensitive to stacking scenario, focal length, and magnification.

For landscape stacks (stacking from foreground to infinity), shorter focal lengths work much better. If the sensor could move 10mm (and that means making the camera 10 mm thicker!), then it could do a landscape stack all the way from 0.1 meters to ∞ with a 28mm lens, but only do a stack from 1.1 meters ti ∞ with a 100mm lens and only 9.3 meters to ∞ with a 300mm lens.

For a modest macro (1:2) stacks, a sensor movement of 10mm would offer 23mm of stacking with a 28mm lens, 29 mm of stacking with a 50 mm lens, and 36mm of stacking with a 200 mm lens.

For high macro such as 2:1 stacks, a sensor movement of 10mm would offer only 2.1mm of stacking with a 28mm lens, 2.3 mm of stacking with a 50 mm lens, and 2.4mm of stacking with a 200 mm lens.

**Larrymc** · 11-04-2019, 08:23 AM - **2 Likes**

Originally posted by reh321

Well, we learned that the fixed LCD seems even more certain than it had.

I'm OK with it either way. I think the design is pretty much set now.

The Squirrel Mafia · 11-04-2019, 08:35 AM

Originally posted by JPT

Look's like Kimio Tanaka has had his hands on one and he says it feels good - a bit different but firmer than the K-3.

Photo of the Day 11?4?

Interesting comments.

**mlt** · 11-04-2019, 08:41 AM

Looks like what we’ve seen is what we get as far as the body goes. Now all we need is the internals specifics and control functions.

taktoon · 11-04-2019, 08:51 AM - **1 Like**

Originally posted by mlt

Looks like what we’ve seen is what we get as far as the body goes. Now all we need is the internals specifics and control functions.

My pure guess tells me that it is not final body in all the details. I thing they left something for a small surprise.

**Larrymc** · 11-04-2019, 08:57 AM - **1 Like**

Originally posted by taktoon

My pure guess tells me that it is not final body in all the details. I thing they left something for a small surprise.

The final detail is the unlabeled button on the upper left rear of the body and what it actually does.

photoptimist · 11-04-2019, 08:57 AM - **3 Likes**

Originally posted by BarneyL

I wonder what's the rationale behind a fixed screen in a camera that's not hardcore sports/journalism body with built-in grip like D5 or 1DX.

Perhaps it was to keep the camera within some target retail price, target physical size, or target mass.

Everyone wants a flagship camera but if it is too expensive, too big, or too large, fewer people will buy it.

Camera design always involves trade-offs. The challenge for the designers is in estimating the numbers of buyers added if the camera has some feature versus the number of buyers lost if that feature makes the camera costly and bulky.

The Squirrel Mafia · 11-04-2019, 09:11 AM - **2 Likes**

I'm probably one of the few that doesn't care whether this camera gets a movable LCD screen or not. It's great if it does & it's great if it doesn't. I can use the camera either way. Been doing it forever with a fixed screen K-50 & a fixed screen Sony a200 before that & a fixed screen Canon EOS before that. Hahaha!

My biggest interest is the AF accuracy, AF performance, & 5-axis IBIS that I hope they put in.

**monochrome** · 11-04-2019, 09:28 AM

^^^ I’m with you.

Originally posted by The Squirrel Mafia

I'm probably one of the few that doesn't care whether this camera gets a movable LCD screen or not. It's great if it does & it's great if it doesn't. I can use the camera either way. Been doing it forever with a fixed screen K-50 & a fixed screen Sony a200 before that & a fixed screen Canon EOS before that. Hahaha!

My biggest interest is the AF accuracy, AF performance, & 5-axis IBIS that I hope they put in.

Zygonyx · 11-04-2019, 09:42 AM

+1

Mistral75 · 11-04-2019, 09:45 AM - **3 Likes**

Originally posted by taktoon

My pure guess tells me that it is not final body in all the details. I thing they left something for a small surprise.

Originally posted by Larrymc

The final detail is the unlabeled button on the upper left rear of the body and what it actually does.

^ This!

i'll try to learn more at the opening night of the Pop-Up Cafe in Paris. French people are talkative, in particular those who come from North Africa. If the distinguished Yazid Belmadi knows something, I'll make sure he spills the beans. I'll bring a goat and coarse salt with me.

**sergysergy** · 11-04-2019, 09:45 AM

Originally posted by yorik

I prefer the term `available light'... I also rarely use a flash, but I will sometimes move the available light sources around, like in the picture below.

Maybe the new camera will come with a detachable iPad..?

As long as your subject is calm that is a great idea

yorik · 11-04-2019, 10:03 AM - **1 Like**

Originally posted by photoptimist

"It's complicated"!!

The amount of stacking possible with sensor movement is extremely sensitive to stacking scenario, focal length, and magnification.

For landscape stacks (stacking from foreground to infinity), shorter focal lengths work much better. If the sensor could move 10mm (and that means making the camera 10 mm thicker!), then it could do a landscape stack all the way from 0.1 meters to ∞ with a 28mm lens, but only do a stack from 1.1 meters ti ∞ with a 100mm lens and only 9.3 meters to ∞ with a 300mm lens.

For a modest macro (1:2) stacks, a sensor movement of 10mm would offer 23mm of stacking with a 28mm lens, 29 mm of stacking with a 50 mm lens, and 36mm of stacking with a 200 mm lens.

For high macro such as 2:1 stacks, a sensor movement of 10mm would offer only 2.1mm of stacking with a 28mm lens, 2.3 mm of stacking with a 50 mm lens, and 2.4mm of stacking with a 200 mm lens.

I had been thinking of much finer level of `stacking', just to ensure that the subject at the point of focus was indeed in focus. I don't even know if this kind of
thing would lead to perceptible differences in image quality.

**ThorSanchez** · 11-04-2019, 10:04 AM

Originally posted by JPT

Look's like Kimio Tanaka has had his hands on one and he says it feels good - a bit different but firmer than the K-3.

Photo of the Day 11?4?

Firmer? My K-3ii doesn't have a whole lot of give.

**Larrymc** · 11-04-2019, 10:30 AM

Originally posted by The Squirrel Mafia

I'm probably one of the few that doesn't care whether this camera gets a movable LCD screen or not. It's great if it does & it's great if it doesn't. I can use the camera either way. Been doing it forever with a fixed screen K-50 & a fixed screen Sony a200 before that & a fixed screen Canon EOS before that. Hahaha!

My biggest interest is the AF accuracy, AF performance, & 5-axis IBIS that I hope they put in.

My sentiments exactly!!

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11-04-2019, 08:20 AM - 2 Likes	#3271
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,122	Originally posted by ecostigny I wonder if the sensor has enough back-and-forth motion range to accommodate the focus stacking requirements. I'm not a mechanical engineer, so I cannot guess what would be needed. "It's complicated"!! The amount of stacking possible with sensor movement is extremely sensitive to stacking scenario, focal length, and magnification. For landscape stacks (stacking from foreground to infinity), shorter focal lengths work much better. If the sensor could move 10mm (and that means making the camera 10 mm thicker!), then it could do a landscape stack all the way from 0.1 meters to ∞ with a 28mm lens, but only do a stack from 1.1 meters ti ∞ with a 100mm lens and only 9.3 meters to ∞ with a 300mm lens. For a modest macro (1:2) stacks, a sensor movement of 10mm would offer 23mm of stacking with a 28mm lens, 29 mm of stacking with a 50 mm lens, and 36mm of stacking with a 200 mm lens. For high macro such as 2:1 stacks, a sensor movement of 10mm would offer only 2.1mm of stacking with a 28mm lens, 2.3 mm of stacking with a 50 mm lens, and 2.4mm of stacking with a 200 mm lens.

11-04-2019, 08:23 AM - 2 Likes	#3272
Larrymc Site Supporter Join Date: Jun 2014 Location: Mississippi, USA Posts: 5,251	Originally posted by reh321 Well, we learned that the fixed LCD seems even more certain than it had. I'm OK with it either way. I think the design is pretty much set now.

11-04-2019, 08:35 AM	#3273
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,054	Originally posted by JPT Look's like Kimio Tanaka has had his hands on one and he says it feels good - a bit different but firmer than the K-3. Photo of the Day 11?4? Interesting comments.

11-04-2019, 08:41 AM	#3274
mlt Site Supporter Join Date: Dec 2007 Posts: 1,159	Looks like what we’ve seen is what we get as far as the body goes. Now all we need is the internals specifics and control functions.

11-04-2019, 08:51 AM - 1 Like	#3275
taktoon Veteran Member Join Date: Dec 2015 Posts: 605	Originally posted by mlt Looks like what we’ve seen is what we get as far as the body goes. Now all we need is the internals specifics and control functions. My pure guess tells me that it is not final body in all the details. I thing they left something for a small surprise.

11-04-2019, 08:57 AM - 1 Like	#3276
Larrymc Site Supporter Join Date: Jun 2014 Location: Mississippi, USA Posts: 5,251	Originally posted by taktoon My pure guess tells me that it is not final body in all the details. I thing they left something for a small surprise. The final detail is the unlabeled button on the upper left rear of the body and what it actually does.

11-04-2019, 08:57 AM - 3 Likes	#3277
photoptimist Pentaxian Join Date: Jul 2016 Photos: Albums Posts: 5,122	Originally posted by BarneyL I wonder what's the rationale behind a fixed screen in a camera that's not hardcore sports/journalism body with built-in grip like D5 or 1DX. Perhaps it was to keep the camera within some target retail price, target physical size, or target mass. Everyone wants a flagship camera but if it is too expensive, too big, or too large, fewer people will buy it. Camera design always involves trade-offs. The challenge for the designers is in estimating the numbers of buyers added if the camera has some feature versus the number of buyers lost if that feature makes the camera costly and bulky.

11-04-2019, 09:11 AM - 2 Likes	#3278
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,054	I'm probably one of the few that doesn't care whether this camera gets a movable LCD screen or not. It's great if it does & it's great if it doesn't. I can use the camera either way. Been doing it forever with a fixed screen K-50 & a fixed screen Sony a200 before that & a fixed screen Canon EOS before that. Hahaha! My biggest interest is the AF accuracy, AF performance, & 5-axis IBIS that I hope they put in.

11-04-2019, 09:28 AM	#3279
monochrome Loyal Site Supporter Join Date: Mar 2008 Location: Working From Home Photos: Gallery \| Albums Posts: 26,276	^^^ I’m with you. Originally posted by The Squirrel Mafia I'm probably one of the few that doesn't care whether this camera gets a movable LCD screen or not. It's great if it does & it's great if it doesn't. I can use the camera either way. Been doing it forever with a fixed screen K-50 & a fixed screen Sony a200 before that & a fixed screen Canon EOS before that. Hahaha! My biggest interest is the AF accuracy, AF performance, & 5-axis IBIS that I hope they put in.

11-04-2019, 09:42 AM	#3280
Zygonyx Pentaxian Join Date: Jun 2011 Location: Ile de France Posts: 4,033	+1

11-04-2019, 09:45 AM - 3 Likes	#3281
Mistral75 Pentaxian Join Date: Feb 2009 Location: Paris, France Posts: 7,527	Originally posted by taktoon My pure guess tells me that it is not final body in all the details. I thing they left something for a small surprise. Originally posted by Larrymc The final detail is the unlabeled button on the upper left rear of the body and what it actually does. ^ This! i'll try to learn more at the opening night of the Pop-Up Cafe in Paris. French people are talkative, in particular those who come from North Africa. If the distinguished Yazid Belmadi knows something, I'll make sure he spills the beans. I'll bring a goat and coarse salt with me.

11-04-2019, 09:45 AM	#3282
sergysergy Site Supporter Join Date: Jan 2011 Photos: Gallery Posts: 5,170	Originally posted by yorik I prefer the term `available light'... I also rarely use a flash, but I will sometimes move the available light sources around, like in the picture below. Maybe the new camera will come with a detachable iPad..? As long as your subject is calm that is a great idea

11-04-2019, 10:03 AM - 1 Like	#3283
yorik Veteran Member Join Date: Jan 2012 Location: Scotts Valley, CA Photos: Gallery Posts: 991	Originally posted by photoptimist "It's complicated"!! The amount of stacking possible with sensor movement is extremely sensitive to stacking scenario, focal length, and magnification. For landscape stacks (stacking from foreground to infinity), shorter focal lengths work much better. If the sensor could move 10mm (and that means making the camera 10 mm thicker!), then it could do a landscape stack all the way from 0.1 meters to ∞ with a 28mm lens, but only do a stack from 1.1 meters ti ∞ with a 100mm lens and only 9.3 meters to ∞ with a 300mm lens. For a modest macro (1:2) stacks, a sensor movement of 10mm would offer 23mm of stacking with a 28mm lens, 29 mm of stacking with a 50 mm lens, and 36mm of stacking with a 200 mm lens. For high macro such as 2:1 stacks, a sensor movement of 10mm would offer only 2.1mm of stacking with a 28mm lens, 2.3 mm of stacking with a 50 mm lens, and 2.4mm of stacking with a 200 mm lens. I had been thinking of much finer level of `stacking', just to ensure that the subject at the point of focus was indeed in focus. I don't even know if this kind of thing would lead to perceptible differences in image quality.

11-04-2019, 10:04 AM	#3284
ThorSanchez Site Supporter Join Date: Dec 2012 Photos: Gallery \| Albums Posts: 2,806	Originally posted by JPT Look's like Kimio Tanaka has had his hands on one and he says it feels good - a bit different but firmer than the K-3. Photo of the Day 11?4? Firmer? My K-3ii doesn't have a whole lot of give.

11-04-2019, 10:30 AM	#3285
Larrymc Site Supporter Join Date: Jun 2014 Location: Mississippi, USA Posts: 5,251	Originally posted by The Squirrel Mafia I'm probably one of the few that doesn't care whether this camera gets a movable LCD screen or not. It's great if it does & it's great if it doesn't. I can use the camera either way. Been doing it forever with a fixed screen K-50 & a fixed screen Sony a200 before that & a fixed screen Canon EOS before that. Hahaha! My biggest interest is the AF accuracy, AF performance, & 5-axis IBIS that I hope they put in. My sentiments exactly!!