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Re: [OM] LR vs. Aperture image sizes [was LR5 beta}

Subject: Re: [OM] LR vs. Aperture image sizes [was LR5 beta}
From: Paul Braun <pbraun42@xxxxxxxxx>
Date: Thu, 2 May 2013 15:05:10 -0500
Ooooh... Gonna try that when I get home tonight. Thanks!


Paul Braun
Certified Music Junkie

"It's such a fine line between stupid, and clever." -- David St. Hubbins

"Music washes from the soul the dust of everyday life" - Harlan Howard

On May 2, 2013, at 14:54, Tina Manley <images@xxxxxxxxxxxxx> wrote:

> Under Library>Convert files to DNG, you can have LR4 convert raw files to
> DNG (even if they are already DNGs) and click the box Embed Fast Load Data.
> That makes the preview load instantly without waiting for the Pop. This is
> a new feature in LR4.
> 
> Tina
> 
> 
> 
> 
> On Thu, May 2, 2013 at 3:38 PM, Chuck Norcutt <chucknorcutt@xxxxxxxxxxxxxxxx
>> wrote:
> 
>> Just a very wild guess but I hypothesize that the 1/2 second delay is
>> due to virtual memory paging activity.  LR is trying to do something
>> that requires more real memory than is available.  It gets put on hold
>> while the OS frees more memory by paging something else out to disk.
>> Then LR suddenly has the processor back with the real memory it needs
>> and can run at full speed... pop... it's suddenly on the screen.  Sounds
>> good to me because PhotoShop (and LR too?) has been known for many years
>> to be a memory hog.
>> 
>> Try doing the same thing with nothing but LR running.  If still slow try
>> a smaller set of images and see what happens.  If the 1/2 second delay
>> goes away you likely need more memory.
>> 
>> Chuck Norcutt
>> 
>> 
>> On 5/2/2013 9:22 AM, philippe.amard wrote:
>>> thanks Chuck but not only is the sensor not that of the x10 but your
>>> message doesn't explain why the photo has to "pop" when the preview is
>>> displayed :-(
>>> 
>>> Thanks al the same :-)
>>> 
>>> Ph
>>> 
>>> 
>>> Le 2 mai 13 à 14:50, Chuck Norcutt a écrit :
>>> 
>>>> From DPReview's review of the Xpro-1
>>>> -----------------------------------------------------
>>>> Sensor       • 23.6mm x 15.6mm (APS-C) X-Trans CMOS sensor
>>>> • 16.3 million *effective* pixels
>>>> • Primary colour filter (RGB color filter array)
>>>> ----------------------
>>>> Image sizes  3:2
>>>>  • 4896 x 3264
>>>>  • 3456 x 2304
>>>>  • 2496 x 1664
>>>> -----------------------------------------------------
>>>> 
>>>> Note maximum image size occurs at 3:2 aspect ratio and is 4896 x 3264.
>>>> Emphasis placed on *effective* is mine.
>>>> 
>>>> Chuck Norcutt
>>>> 
>>>> 
>>>> On 5/1/2013 6:35 AM, philippe.amard@xxxxxx wrote:
>>>>> I also notice that loss in LR with the x10 - the previews suddenly
>>>>> seem to "plop" as a cold slide would in the projector ...
>>>>> I attributed it so far to a sort of hidden lens adjustment.
>>>>> Yet Moose's explanation also makes  much sense to me.
>>>>> What I don't understand is the 0.5 sec delay for the conversion to
>>>>> take place on screen
>>>>> 
>>>>> 
>>>>> Amitiés
>>>>> Philippe
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> 
>>>>> ========================================
>>>>> 
>>>>> Message du : 01/05/2013 00:47
>>>>> De : "Moose " <olymoose@xxxxxxxxx>
>>>>> A : "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
>>>>> Copie à :
>>>>> Sujet : [OM] LR vs. Aperture image sizes [was LR5 beta}
>>>>> 
>>>>> 
>>>>>  On 4/29/2013 4:47 AM, SwissPace wrote:
>>>>>> I had a quick look at some of my Xpro-1 raw files ... quite a bit
>>>>>> of border is missing from the
>>>>>> LR files which I have just discovered from viewing the aperture
>>>>>> version.
>>>>> 
>>>>> Have you checked the image pixel sizes? I imagine you will find
>>>>> that LR delivers all the camera claims.
>>>>> 
>>>>> If I recall correctly, camera specs and most converters ignore a
>>>>> few pixels along each edge. This is because they cannot
>>>>> be fully converted for accurate color, as some of the other,
>>>>> surrounding pixels needed for full decoding of the Bayer
>>>>> array are not there.That little set of border pixels are used in
>>>>> decoding color for those next further in, but not used
>>>>> directly as part of the image.
>>>>> 
>>>>> Soooo, they need to include them in the Raw files, for use by
>>>>> converters, but they are not intended to be in converter
>>>>> output.
>>>>> 
>>>>> DCRaw offers the option to produce these extra, edge pixels, so any
>>>>> GUI converter/editor using it underneath has that
>>>>> option, if desired. It's not really many pixels. On the A650,
>>>>> 3000x4000 becomes 3024x4032. I used DCRaw some time ago. I
>>>>> couldn't see anything wrong with the color of the extra pixels, but
>>>>> I only look closely at a very few images.
>>>>> 
>>>>> I can see why the camera makers would not include them in their
>>>>> specs and most converters don't include them in their
>>>>> output. All it takes is one yahoo blogging about false colors at
>>>>> the edge of the image to cause endless trouble.
>>>>> 
>>>>> Assuming this is what you are seeing, I'm not sure why Apple would
>>>>> include it.
>>>>> 
>>>>> Edgy Moose
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>>> 
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>>> to the eye. Antoine de Saint Exupéry in Le Petit Prince.
>>> NO ARCHIVE
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> 
> 
> -- 
> Tina Manley, ASMP
> www.tinamanley.com
> -- 
> _________________________________________________________________
> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
> Themed Olympus Photo Exhibition: http://www.tope.nl/
> 
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