Pentax full frame 35mm official announcement from Ricoh (K-1 36mp)

[tduell]

I'm confused.

Does the K1 do four takes for each image ?

Yes, the same as the K-3 II does. It shifts the sensor by one pixel for each shot with each aligning exactly with an R, G, G and B of the Bayer pattern, then saves all 4 in a DNG (or PEF) or if shooting jpg does in camera processing to emit one standard size jpg PS image.
It might be useful to do a search for "Pentax pixel shift"...there is quite a lot of material on the web that explains it with nice images, probably much clearer than I am doing it.

Cheers,
Terry

[arthurking83]

.....


Yes, comprising 4 DNG files, which then need to be processed using Pentax Digital Camera Utility software ....

Oh! .. I assumed that the combination of the four exposures would be done in camera and the 120Mb raw file created directly from there.
Which is what happens if you use multiple exposures in camera.

Of course I don't have a Pentax device of any kind, let alone the Pentax software to check it out and how it works.


Kev! ... Your D800 has even cleaner high ISO if you try hard enough
You can easily get ISO12800 images(in NEF format *) with no noise at all .. you just need to try a bit harder
(you could probably do the same thing in jpg format in camera, but that format is foreign to me in camera! )

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... then saves all 4 in a DNG (or PEF) or if shooting jpg does in camera processing to emit one standard size jpg PS image.
.....

OK .. a bit confusing.
So the output is a single DNG/PEF file or a jpg file(if you prefer) .. "jpg PS image" tho is confusing? .... what's that?

[tduell]

Oh! .. I assumed that the combination of the four exposures would be done in camera and the 120Mb raw file created directly from there.
Which is what happens if you use multiple exposures in camera.

My story is what happens at the moment with the K-3 II, and I have assumed that will be the same with the K-1. I haven't seen anything thus far that suggests K-1 does in-camera processing to emit a PS raw, but maybe we haven't seen all the gory detail yet.

Cheers,
Terry

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OK .. a bit confusing.
So the output is a single DNG/PEF file or a jpg file(if you prefer) .. "jpg PS image" tho is confusing? .... what's that?

OK, I'll try to clarify. If you shoot jpg, and have pixel shift ON, then camera shoots 4 images, processes in-camera and saves a single jpg of sensor size...i.e a pixel shifted (PS) image. Does that remove confusion?

Cheers,
Terry

[arthurking83]

Your terminology is unclear Terry.

what's a "PS raw".

Pentax as far as I know output raw files in the DNG and PEF format.

what's the PS mean?(same with your earlier use pf PS in the jpg comment).

[tduell]

Your terminology is unclear Terry.

what's a "PS raw".

Pentax as far as I know output raw files in the DNG and PEF format.

what's the PS mean?(same with your earlier use pf PS in the jpg comment).

For crying out loud we are talking Pixel Shift (PS).
A pixel shift raw file (either DNG or PEF) will comprise the 4 separate images, shot at each of the sensor movements. If you shoot with PS 'off', then the raw will contain only one image.

Does that help?

Cheers,
Terry

[MissionMan]

I was a little confused as well. PS is a common reference to Photoshop


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[tduell]

I was a little confused as well. PS is a common reference to Photoshop


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OK, but I did use "pixel shift (PS)" thus defining the abbreviation.

Cheers,
Terry

[arthurking83]

....

Does that help?

Yep makes sense.

but remember us non Pentax folks don't really know much about Pentax systems.

I was thinking that the file type is something weird like PSJpeg or something.
So the jpg is a standard jpg type and can be viewed by any image browser?

Same with a DNG or PEF file. Any software can view a pixel shifted raw file, or only the Pentax software?

is there any way(eg a setting in camera) to simply combine the images in camera as a single raw file so that the resultant raw file from pixel shifting is a single file(some sort of gain control or something like that).

[Cage]

@ Arthur .....

Kev! ... Your D800 has even cleaner high ISO if you try hard enough
You can easily get ISO12800 images(in NEF format *) with no noise at all .. you just need to try a bit harder
(you could probably do the same thing in jpg format in camera, but that format is foreign to me in camera! )

I don't shoot white sheets very often.

Anything over ISO800 in the shade and I'm seeing noise.

[swifty]

A number of manufacturers are doing the sensor shift thing and the implementation are all a bit different.
I think Phase One started it all IIRC.
The Olympus way does half pixel shifts 8 times resulting in both resolution increases and all colour info at each photosite but spits out a single RAW file with the combined data.
Limitations for this technique is you need static subjects and camera for the duration that the camera need to execute the shifts. The Pentax blurb says it has a motion correction function. I wonder how well this works and also how long the K-1 takes to execute the four shifts.

[tduell]

Yep makes sense.

Good, I was beginning to think I should give up .

but remember us non Pentax folks don't really know much about Pentax systems.

I was thinking that the file type is something weird like PSJpeg or something.

Sure, but I thought I had spelled it out well enough, but clearly non-pentaxians can be difficult

So the jpg is a standard jpg type and can be viewed by any image browser?

Same with a DNG or PEF file. Any software can view a pixel shifted raw file, or only the Pentax software?

yes, the out-of-camera jpg from a pixel shift is stock standard.
Not all software will correctly read the pixel shift raw. Most will only see the first of the 4 images. I think Lightroom (a bit vague on this as I don't use it) is capable of extracting all 4 pixel shift images from the raw.
Pentax supply their Digital camera Utility software with the camera which is capable of doing the pixel shift raw processing, and as I said earlier, there is a patched version of dcraw (dcrawps) that can process the pixel shift raw files.

There has been a lot of confusion about all this and I do apologise if I haven't been clear, but it does seem like some of what I have writ hasn't been read, so if still in doubt, please review the thread and it may become clearer .

is there any way(eg a setting in camera) to simply combine the images in camera as a single raw file so that the resultant raw file from pixel shifting is a single file(some sort of gain control or something like that).

As I think I said previously, I am not really sure if the K-1 is advanced over the K-3 II in this regard. The K-3 II simply saves all 4 raw pixel shift images in the one raw file, there is no combining, or processing of the raws in-camera when raw is the save format.
We may be at cross purposes here, I am assuming you mean 'is there a camera setting to save a single pixel shift raw, not requiring any out of camera processing to combine the 4 images?', and the answer to that is 'not with the K-3 II, and I'm not aware that the K-1 is different'.
To reiterate, with the K-3 II the pixel shift raw file contains 4 images,which is the the reason it is 100+ MB in size.

Cheers,
Terry

[Kym]

Pre-review http://www.imaging-resource.com/PROD...pentax-k1A.HTM

[Kym]

Converts to around $2,510 and CRK are pretty good on pricing.
Eg. my K-3 was within $100 of the B&H price after shipping.

[Kym]

Popular photography http://www.popphoto.com/pentax-debut...frame-dslr-k-1

[Kym]

Official K-1 site http://www.pentax.com/en/k-1/

[Kym]

[Kym]

Cnet review http://www.cnet.com/products/pentax-k-1/

[Kym]

Probably not relevant as no one here shoots anymore

Pentax release a downsized 35mm camera ... remember the flagship is the Pentax 645z MF.
Canikon don't have a real pro camera; i.e. larger than 35mm.
(Historically pro's shot MF and larger, 35mm was hobbyist territory)

[Lance B]

Converts to around $2,510 and CRK are pretty good on pricing.
Eg. my K-3 was within $100 of the B&H price after shipping.

They may be shipping in Japanese Yen, so the price may not be that high, possibly low two thousands.

[tduell]

I see the Aust. distributor has the K-1 on their website for $3188.90, but there is chatter (PentaxForums) that dealers are setting a price somewhere around $2800-2900.

Cheers,
Terry