shagie

A bit ago, you asked about the blue 'cast' to the Sierra photographs you had (on the UV filter thread). The answer is not so much the UV light (though that is a compoent), but that the color temp changes when you go up.

At sea level, the color temp is about 5500K or 182 mireds.

At 4k - 6k feet, 6000K (167 mireds -15)

At 6k - 8.5k feet, 6500K (154 mireds -28)

At 8.5k - 10k feet, 7000K (143 mireds -39)

A shift of 10 mireds is noticable to the human eye.

To compensate for this, one would use a warming filter:

81 : +10

81A : +18

81B : +37

81C : +35

81D : +42

Half Dome is a bit over 7000 feet above sea level.

As to the photograph itself, A very intresting view. The shear face of the wall is one that people rarely photograph from this angle. It is a pleasing photograph to the eye, though though lacking something that would show the magesty of the rock.

The thing in the lower right portion of the photograph is a speaker that is mounted on the pillar.

Moderatly amusingly, the photo shop accidently printed this photograph in the APS panoramic format (yes, it is 35mm film). This cropped the

speaker out of it and gave me an enlargement of the pillar itself (though it had some other unfortunate cropping also)

The sun shines through on the stained glass onto a pillar at Grace

Cathedral (San Francisco, CA).

I was lucky to get this one - the full sun has to be in the right spot

at the right time without any clouds.

I am looking for suggestions on this photograph and the subject for

the next time I work on this. (I would also appriciate suggestions as

to how to photographed stained glass)