M8 sensor: correct capture of color lavender?

[adan]

Advertisement (gone after registration)

Just a follow-on to Michael and Graham: You can find a single spectral line that is red, or yellow, or green, but there is no such thing as a magenta or purple spectral line. Those colors do not exist as discrete visible wavelengths.

 

Color wheels and diagrams "wrap around" to give the impression that there is a continuum from blue through violet to purple, magenta and red, but in the real world of the visible spectrum, there is no wrap-around, and those colors that appear between blue and red on a color wheel are "undefined" as spectral wavelengths - like dividing by zero.

 

Same thing happens with film - Kodachrome had trouble with accurate blue-violets (the late Galen Rowell demonstrated this in Outdoor Photographer in the early 90's, in explaining why he was switching fron K-chrome to Velvia), and Kodak went to special lengths to get accurate color in that range when they created Ektachrome 100N, in answer to complaints from fashion photographers who were getting poor reproduction of blue-violet cloth with the original Ektachrome 100 (not to be confused with E100; this was in the early 80s).

[Advertisement]

The Leica Q3 is available for pre-order at B&H Photo Video and Adorama

[yanidel]

It also depends on the definition of the Lavender color. So going back to basics, here is a Lavender field (M8 + Industar 69, no IR)

[Falk61462]

Dear all,

 

many thanks for all your help, advice and insight. I certainly wasn't aware what major difference the usage of another raw converter (in this case C1) makes. Another lesson learned is, that the Nikon D700 display - in some cases - certainly gives a much better idea of what the final picture both, in camera JPEG and after raw conversion (without any other PP) will look like than the M8's display.

 

Jürgen

[wilfredo]

This colour looks OK to me, one of my first over 2 years ago once I got the IR filter for my 28 elmarit. DNG processed in Cap1, daylight white balance.

 

Jeff

 

Nice!

[russell c. greenberg]

As I remember, there is a condition for film called the "ageratum" effect, named after that specific flower. Ageratum is a purple (violet) colored flower that film renders as blue, hence the name of this particular effect. Does the M8 (and other digital cameras) suffer from this effect?, at least when it comes to in-camera JPEGs? I have experienced this when photographing Bluebells, Clematis, and Morning Glories, they have all appeared blue when viewing in-camera JPEGs. I will have to do some post processing, right now I only have Lightroom 1.4 installed in my computer, maybe I need to install C1 and try that also. BTW, I shoot DNG+JPEG, with my JPEG set to B+W for previews, but when shooting these flowers , I change my JPEG to a color setting to preview this ageratum effect. I am sorry that I am running off here, can someone answer my initial question regarding "ageratum" effect and digital sensors? I hope that I am not sounding ignorant here. Russell

[ho_co]

Russell--

I thought I remembered that there was a flower whose name had become associated with the effect! Thanks for recalling it.

 

In response to your question, I think that's the topic of this thread.

 

And as Jürgen implied above, different cultures may apply boundaries to color names differently. That is, I think German lila can be translated into non-technical English in a number of different ways, simply because we don't have a specific, agreed definition for "lilac," "lavender" etc.