By the tilt of the cap...

Gary W Brown · Post by **Gary W Brown** » Mon Oct 06, 2008 6:01 pm

By the tilt of the cap you can tell this is one fungi...

...

Ken Ramos · Post by **Ken Ramos** » Mon Oct 06, 2008 6:14 pm

You know I have been following the discussions on these things in the forums, they are about as complicated as the little wasps that I have become fascinated with here of late. Good shot though Gary

, though the cap is a little blown at the top. If your are using Photoshop there is an adjustment to darken the highlights a bit, you will find it under "Enhancments/Contrast and Brightness." As for what kind of mushroom it is I haven't the foggiest!

Harold Gough · Post by **Harold Gough** » Mon Oct 06, 2008 10:53 pm

It's probably an Agaricus.

I am seeing blue sections of grass stems, especially in the bottom and mid right of the image. Am I alone in this?

Harold

rjlittlefield · Post by **rjlittlefield** » Mon Oct 06, 2008 10:59 pm

Harold Gough wrote:I am seeing blue sections of grass stems, especially in the bottom and mid right of the image. Am I alone in this?

Nope, me too. Odd effect. Wonder what's going on?

--Rik

Harold Gough · Post by **Harold Gough** » Mon Oct 06, 2008 11:17 pm

I can only suggest that it could be the equivalent of damaged emulsion layers in film.

Harold

DaveW · Post by **DaveW** » Tue Oct 07, 2008 12:58 am

Could it be chromatic aberration in the lens from light reflected off the grass stems concerned? Particularly if these individual stems were wet and acting like a mirror.

http://www.vanwalree.com/optics/chromatic.html

Digital sensors show up any chromatic aberration in photographic lenses more than film used to.

DaveW

Gary W Brown · Post by **Gary W Brown** » Tue Oct 07, 2008 5:18 pm

Thanks to everyone for your comments and suggestions. Ken, my PS elements 2 did not seem to have the adjustments that you recommended so I downnloaded a trial version of elements 6 and tried your suggestions (result of one set of changes is posted below). Harold, Rik, and Dave, I went back to the scene and looked for blue stems and there were none. It was an afternoon around 5:00 pm when I took the original digital photo (hence the overexposure on the mushroom cap) and there was no surface moisture on the grass. My camera is a Sony a100 and my lens is a Tamron 90mm 1:2.8 macro. Any additional insights are welcomed. Thanks again. Gary

rjlittlefield · Post by **rjlittlefield** » Tue Oct 07, 2008 5:34 pm

Was there perhaps something intense blue near the scene, that could have been reflected by a few blades of grass that happened to be sitting at the correct angle? I notice that the extreme right of the lower portion of the mushroom stalk has a similar blue cast to it. There are also a couple of patches of similar blue in the far right background.

Regarding the rework, I don't think these modifications are an improvement. A bunch of intense noise has gotten added, not only to the background but also on the mushroom gills on the right side. And the top surface of the mushroom has gone from being very light with a bluish tinge, to more of a slate gray that I'll bet looks a lot different from the real mushroom. I'm quite happy with the first picture. A bit less exposure at the time would have been good, to avoid blowing out any of the cap. But once the overexposure has happened, there's really no good way to fix it in post-processing.

--Rik

Harold Gough · Post by **Harold Gough** » Tue Oct 07, 2008 10:19 pm

I'm not sure but I think the blue is minimal in the plane of best focus.

Harold