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Author Topic: Raw Conversion and Resolution  (Read 3864 times)

Jonathan Ratzlaff

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Raw Conversion and Resolution
« on: November 05, 2006, 08:12:01 PM »

One frustration in Lightroom raw conversion is the limited resolution settings available; at least at first glance.  It may be important to me because I am using a Fuji S-2 camera and there is a lot more image datea in a 12MP conversion than there is in a 6MP conversion.   So there is a tradeoff; good image adjustment, low resolution and resultant loss of image quality when exported into Photoshop
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jani

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Raw Conversion and Resolution
« Reply #1 on: November 06, 2006, 09:44:47 AM »

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One frustration in Lightroom raw conversion is the limited resolution settings available; at least at first glance.  It may be important to me because I am using a Fuji S-2 camera and there is a lot more image datea in a 12MP conversion than there is in a 6MP conversion.   So there is a tradeoff; good image adjustment, low resolution and resultant loss of image quality when exported into Photoshop
I'm not sure exactly what it is that you're complaining about.

When, for instance, I edit a roughly 13 MPx 5D image in Photoshop, that's fine by Lightroom. I can also export it to e.g. DNG in full size, or constrain the image dimensions freely.

Are you sure that you're using the latest version of the Beta? Check that you have build 264255 (Help->About Adobe Lightroom in Windows, Lightroom->About Adobe Lightroom in the Mac version).
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Jan

61Dynamic

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Raw Conversion and Resolution
« Reply #2 on: November 06, 2006, 11:06:03 AM »

He has one of the "Super CCD" Fuji cameras that make the dubious claim that their 6mp camera contains so much detail due to the honeycomb sensor design that the image can be up-rezzed to 12mp and it will look like a native 12mp image. I haven't personally seen any evidence of that being the case but that is beside the point here.

The camera is natively only 6mp and so LR only outputs it at 6mp. ACR has the ability to up-rezz upon output and maybe that ability will be included in LR by the time it reaches 1.0.
« Last Edit: November 06, 2006, 11:07:22 AM by 61Dynamic »
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John Sheehy

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Raw Conversion and Resolution
« Reply #3 on: November 06, 2006, 02:44:09 PM »

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He has one of the "Super CCD" Fuji cameras that make the dubious claim that their 6mp camera contains so much detail due to the honeycomb sensor design that the image can be up-rezzed to 12mp and it will look like a native 12mp image. I haven't personally seen any evidence of that being the case but that is beside the point here.

The camera is natively only 6mp and so LR only outputs it at 6mp. ACR has the ability to up-rezz upon output and maybe that ability will be included in LR by the time it reaches 1.0.
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While the claim is indeed dubious, it is impossible to render the full resolution that the camera does capture with only 6MP.  IOW, it takes 12MP in the output to display the 6MP captured.
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61Dynamic

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Raw Conversion and Resolution
« Reply #4 on: November 06, 2006, 03:59:19 PM »

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While the claim is indeed dubious, it is impossible to render the full resolution that the camera does capture with only 6MP.  IOW, it takes 12MP in the output to display the 6MP captured.
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No offense, but that doesn't make sense. You can't create something from nothing. If the data didn't exist in the 6mp file, it still won't exist when interpolated up to 12mp.

Granted, due to the unique design of the chip, Fuji may just have some tricks up the sleeve in the way their software works the file to make it more efficient at extracting detail above 6mp compared to other raw developers.
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Jonathan Ratzlaff

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Raw Conversion and Resolution
« Reply #5 on: November 06, 2006, 08:32:55 PM »

Actually the resolution is higher than a 6mp camera.  It is much closer to 8MP as the dpreview results will protray.  At any rate I do get much less resolution from an image developed in lightroom as compared to ACR and it is frustrating not being able to take advantage of it.
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jani

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Raw Conversion and Resolution
« Reply #6 on: November 06, 2006, 08:51:52 PM »

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Actually the resolution is higher than a 6mp camera.  It is much closer to 8MP as the dpreview results will protray.  At any rate I do get much less resolution from an image developed in lightroom as compared to ACR and it is frustrating not being able to take advantage of it.
I'm not sure whether you are confirming what the others have assumed here or not, but if you are, then the problem does not lie in developing nor exporting, but rather in importing into Lightroom.

This seems rather strange, since Lightroom uses or at least used the same raw engine as Photoshop/ACR.

When you view your raw image in the library, what resolution does it claim that your image has, in number of pixels width x height (see example below)?

[attachment=1158:attachment]
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Jan

Jonathan Ratzlaff

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Raw Conversion and Resolution
« Reply #7 on: November 07, 2006, 12:59:02 AM »

It brings it in at 6MP as does ACR in photoshop.  It is just that output isn't there.  The import is raw sensor data and the conversion seems to be more limited  as far as resolution is concerned.  Probably one of the reasons for the difference is that  Fuji is the only user of a hexagonal sensor array and as a result most raw converters ignore it completely.
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stewarthemley

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Raw Conversion and Resolution
« Reply #8 on: November 07, 2006, 05:07:25 AM »

Quote
It brings it in at 6MP as does ACR in photoshop.  It is just that output isn't there.  The import is raw sensor data and the conversion seems to be more limited  as far as resolution is concerned.  Probably one of the reasons for the difference is that  Fuji is the only user of a hexagonal sensor array and as a result most raw converters ignore it completely.
[{POST_SNAPBACK}][/a]

Silkypix 3 has a setting specifically for the Fuji cameras. It's available on a 30 day free trial here  [a href=\"http://www.isl.co.jp/SILKYPIX/english/]http://www.isl.co.jp/SILKYPIX/english/[/url]
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indianavince

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Raw Conversion and Resolution
« Reply #9 on: November 07, 2006, 10:23:56 AM »

I am a very long-time Fuji user and am always getting comments about how clean my "12MP"--34GB files are!

Fuji is an oddball the Bibble folks and Aperature have yet been able to embrasse the files.


Now the S3 is confusing with the ability to turn on and off the B+W pixels in Raw capture... I most shoot with them off as it slows the camera down.  IF (seldom) I choose to use the B+W pixels and extended range I use it in jpeg capture mode only.
« Last Edit: November 07, 2006, 10:26:32 AM by indianavince »
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