Re: [darktable-user] Pixel Shift Support

2017-01-09 Thread Tobias Ellinghaus 
Am Montag, 9. Januar 2017, 18:59:28 CET schrieb Emanuele Fontana:
> Hello,
> 
> At the moment Darktable doesn't support the Pixel Shift function yet.
> That means that if you open a pixel shift RAW stack, you will work just
> on the first image. I'm wondering if anybody is working to put the Pixel
> Shift support on the TODO list.

I am not aware of anyone working on that for darktable. I do however know that 
the RawTherapee guys are working on it.

[...]

> Thanks.
> EF

Tobias

signature.asc
Description: This is a digitally signed message part.

Re: [darktable-user] Pixel Shift Support

2017-01-09 Thread Terry Duell 
On Tue, 10 Jan 2017 05:26:06 +1100, Romano Giannetti  
 wrote:


[snip]

I think that the best strategy for now would be to use the proprietary  
sw to obtain an high depth TIFF (or DNG) and then use that with  
darktable... it seems quite a hefty task to do!



...or use dcrawps to process the pixelshift images as you require, and  
export a TIFF.


Cheers,
--
Regards,
Terry Duell

darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org

Re: [darktable-user] Pixel Shift Support

2017-01-09 Thread Lorenzo Bolzani 
Hi,

Olympus E-M5 mk2, Pen-F, E-M1 mk2 do this with 8 shots, 1/2 pixel shifted:

http://andreas-wonisch.com/wp-content/uploads/2015/02/scheme_high_resolution_mode.jpg

Olympus creates a 64MP raw file. I suppose it should be similar to their
standard RAWs but you need a custom plugin to use it in CS5. DT opens it as
a white image with random dots, while RT 4.2.0 opens it fine. You can find
a sample here

.

Some Hasselblad models do too (4 shots). Sony and Panasonic will be there
soon (both have sensor shift).


Lorenzo

2017-01-09 19:26 GMT+01:00 Romano Giannetti :

> Hi!
>
> On 09/01/17 18:59, Emanuele Fontana wrote:
>
>>
>>
>> If you do not know what I am talking about, Pixel Shift Resolution is a
>> function to capture multiple images (generally 4 distinct shots), moving
>> the sensor of the camera in pixel-sized steps and combines them to create a
>> single shot with higher resolution. Actually, each pixel obtains all the
>> RGB colors information instead of just one color info as in the standard
>> shots.
>>
>> Pentax K3 II and the full frame K1 (and I think Olympus E-M5 II too) have
>> the Pixel Shift Resolution feature
>>
>
> For what I know, Pentax and Oly Pixel Shift are quite different. Pentax do
> what you said --- four shots with the sensor shifted of exactly 1 pixel so
> that you have full color info for each pixel. I think that if you basically
> extract the four raws, demosaic with a (correctly) shifted RGBG pattern,
> and average, you'll have the intended result more or less.
>
> Oly is doing (more) shots moving the sensor by a fraction (1/2?) of the
> pixel pitch, to increase linear resolution as well as color resolution.
> This seems quite more complex to attack...
>
> I think that the best strategy for now would be to use the proprietary sw
> to obtain an high depth TIFF (or DNG) and then use that with darktable...
> it seems quite a hefty task to do!
>
> Romano
>
>
> --
> Romano Giannetti
> http://www.rgtti.com/
>
>
> 
> 
> darktable user mailing list
> to unsubscribe send a mail to darktable-user+unsubscribe@lis
> ts.darktable.org
>
>


darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org

Re: [darktable-user] Pixel Shift Support

2017-01-09 Thread Romano Giannetti 

Hi!

On 09/01/17 18:59, Emanuele Fontana wrote:



If you do not know what I am talking about, Pixel Shift Resolution is 
a function to capture multiple images (generally 4 distinct shots), 
moving the sensor of the camera in pixel-sized steps and combines them 
to create a single shot with higher resolution. Actually, each pixel 
obtains all the RGB colors information instead of just one color info 
as in the standard shots.


Pentax K3 II and the full frame K1 (and I think Olympus E-M5 II too) 
have the Pixel Shift Resolution feature


For what I know, Pentax and Oly Pixel Shift are quite different. Pentax 
do what you said --- four shots with the sensor shifted of exactly 1 
pixel so that you have full color info for each pixel. I think that if 
you basically extract the four raws, demosaic with a (correctly) shifted 
RGBG pattern, and average, you'll have the intended result more or less.


Oly is doing (more) shots moving the sensor by a fraction (1/2?) of the 
pixel pitch, to increase linear resolution as well as color resolution. 
This seems quite more complex to attack...


I think that the best strategy for now would be to use the proprietary 
sw to obtain an high depth TIFF (or DNG) and then use that with 
darktable... it seems quite a hefty task to do!


Romano


--
Romano Giannetti
http://www.rgtti.com/


darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org

Re: [darktable-user] Pixel Shift Support

2017-01-09 Thread David Vincent-Jones 

Sounds like it would be tough to do on an X-Trans sensor!

David


On 01/09/2017 09:59 AM, Emanuele Fontana wrote:

Hello,

At the moment Darktable doesn't support the Pixel Shift function yet. 
That means that if you open a pixel shift RAW stack, you will work 
just on the first image. I'm wondering if anybody is working to put 
the Pixel Shift support on the TODO list.


If you do not know what I am talking about, Pixel Shift Resolution is 
a function to capture multiple images (generally 4 distinct shots), 
moving the sensor of the camera in pixel-sized steps and combines them 
to create a single shot with higher resolution. Actually, each pixel 
obtains all the RGB colors information instead of just one color info 
as in the standard shots.


Pentax K3 II and the full frame K1 (and I think Olympus E-M5 II too) 
have the Pixel Shift Resolution feature



Thanks.
EF

 


darktable user mailing list
to unsubscribe send a mail to 
darktable-user+unsubscr...@lists.darktable.org






darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org

[darktable-user] Pixel Shift Support

2017-01-09 Thread Emanuele Fontana 

Hello,

At the moment Darktable doesn't support the Pixel Shift function yet. 
That means that if you open a pixel shift RAW stack, you will work just 
on the first image. I'm wondering if anybody is working to put the Pixel 
Shift support on the TODO list.


If you do not know what I am talking about, Pixel Shift Resolution is a 
function to capture multiple images (generally 4 distinct shots), moving 
the sensor of the camera in pixel-sized steps and combines them to 
create a single shot with higher resolution. Actually, each pixel 
obtains all the RGB colors information instead of just one color info as 
in the standard shots.


Pentax K3 II and the full frame K1 (and I think Olympus E-M5 II too) 
have the Pixel Shift Resolution feature



Thanks.
EF


darktable user mailing list
to unsubscribe send a mail to darktable-user+unsubscr...@lists.darktable.org