Sure looks pretty violet to me!
Chuck Norcutt
Jim Nichols wrote:
> Moose,
>
> My E-1 loves violets. I have posted this link previously. It shows a mix
> of conventional wild violets, along with the grey ones that, where we grew
> up in Mississippi, were called Confederate Violets.
>
> http://gallery.leica-users.org/v/OldNick/Violets.jpg.html
>
> Jim Nichols
> Tullahoma, TN USA
> ----- Original Message -----
> From: "Moose" <olymoose@xxxxxxxxx>
> To: "Olympus Camera Discussion" <olympus@xxxxxxxxxxxxxxxxx>
> Sent: Friday, April 09, 2010 11:00 PM
> Subject: Re: [OM] Talking about violet
>
>
>> On 4/6/2010 2:47 AM, C.H.Ling wrote:
>>> After seeing the discussion about violet reproduction, I was a bit worry
>>> if the later Olympus camera will have problem to see it. Here are some
>>> shots taken for the same type of flower at different date but under
>>> similar
>>> daylight (overcast) condition:
>>>
>>> E-1 http://www.accura.com.hk/temp/P3180419.jpg
>>>
>>> E-PL1 http://www.accura.com.hk/temp/P4060397.jpg
>>>
>>> 5D II http://www.accura.com.hk/temp/IMG_1700.JPG
>>>
>>> 40D http://www.accura.com.hk/temp/IMG_0806.JPG
>>>
>>> All converted from RAW with daylight balance, what do you think?
>>>
>> The difference in background, particularly brightness, makes visual
>> comparison pretty impossible for me. To get a semi objective measure of
>> difference, I selected the violet portion of the primary flower in all
>> four, expressly leaving out the very different, pinkish petal in the 40D
>> shot.
>>
>> I then averaged the selected area. Here are the color values:
>>
>> Channel E-1 E-LP1 5DII 40D
>> --------------------------------------
>> Red 113 126 129 112
>> Green 32 42 29 37
>> Blue 146 150 144 142
>>
>> Assuming the E-1 is most accurate, per AG:
>>
>> Difference
>> Red 13 16 -1
>> Green 10 -3 5
>> Blue 4 -2 -4
>> Total 27 11 0
>>
>> Absolute Difference
>> Red 13 16 1
>> Green 10 3 5
>> Blue 4 2 4
>> Total 27 21 10
>>
>> The 40D is the clear winner in "E-1 emulation", with very small
>> individual deviations and an average deviation of zero. You are right to
>> be concerned about the E-LP1, as it's the farthest off.
>>
>> Certainly nothing absolute in all this. You don't say what RAW
>> converter(s) were used. In the case of ACR, the default conversion
>> depends on some values drawn from test shots of targets, so RAW
>> conversion probably says more about ACR than the camera itself, at least
>> at this level of subtlety.
>>
>> It might be interesting to compare JPEGs and/or RAW conversions using
>> Oly software for their camera and Canon's DPP for theirs. or did you do
>> that?
>>
>> A. Violet Moose
>> [Just one letter away from trouble.]
>> --
>> _________________________________________________________________
>> Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
>> Archives: http://lists.thomasclausen.net/mailman/private/olympus/
>> Themed Olympus Photo Exhibition: http://www.tope.nl/
>>
>>
>
>
--
_________________________________________________________________
Options: http://lists.thomasclausen.net/mailman/listinfo/olympus
Archives: http://lists.thomasclausen.net/mailman/private/olympus/
Themed Olympus Photo Exhibition: http://www.tope.nl/
|
