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Old 02/04/07, 02:51 PM   #1 (permalink)
V64
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Join Date: 09/17/06
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Default Blue Iris, in Sun and Shade

Attached are three images of some dwarf dark blue iris growing in my garden,

The first two are taken with Manual WB, in Shade and then 2 hours later in Sun (weak winter sun). The third is with Auto WB, again in Sun. The first image is reasonably true to color.

None of the various published C1 Profiles made any significant difference to the Purple/Blue.

My M8 has firmware v1.9, delivered a few days ago.

Is this an example of the M8 InfraRed problem, or is it that the flower is really a different color (which I cant see) when it is in the Sunshine?

David H.

http://www.leica-camera-user.com/att...d=11705998 55
http://www.leica-camera-user.com/att...d=11705998 55
http://www.leica-camera-user.com/att...d=11705998 55
Attached Images
File Type: jpg IrisManualShade.jpg (148.4 KB, 75 views)
File Type: jpg IrisManualSun.jpg (162.7 KB, 74 views)
File Type: jpg IrisAutoSun.jpg (165.4 KB, 74 views)
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Old 02/04/07, 06:58 PM   #2 (permalink)
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Daumen hoch Re: Blue Iris, in Sun and Shade

This would be ..if they are blooming now ..in Oregon or California.
The color pallette is very good, purple is an excellent test for any digital camera, it will tell you alot about how flexible and accurate the sensor is.

Now in terms of Macro photography , which these images would fall into, unfortunately the M series Macro is not its strength.
This would have been better with the R 60mm Macro Elmarit F2.8....
The M's are noted for their 21,24,28,35,50, lenses..
Though I must add that I saw actor Charles Martin Smith in " Never Cry Wolf" use a "VisoFlex system with a "Macro/ bellows" setup.. using an M3... so if you so feel inclined....


Thanks for sharing

Regards, Leicamann
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Old 02/04/07, 07:39 PM   #3 (permalink)
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Default Re: Blue Iris, in Sun and Shade

David

Do you have an IR-cut filter? If so, could you take 2 shots in the same lighting, one with, the other without, the IR filter?
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Old 02/04/07, 09:25 PM   #4 (permalink)
V64
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Default Re: Blue Iris, in Sun and Shade

John and Leicamann,

I would love to - but i'm afraid I dont yet have an IR-cut filter, and they will be gone before I do!

This Blue is indeed a real test - and it also shows up the metamerism in my Epson 8450 printer - but the Epson DX4850 does OK, but still shows some purple - I need a better printer!

The Location is the UK.

I recall that in the early days of Digital Images Blue was always a killer - lets hope an IR filter will fix it

The image is a crop from one taken with a 35mm 'cron.

I am sorry I posted this to the wrong section - perhaps someone can move it to the Digital section

Thank-you for your comments

DavidH
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