Google Groups no longer supports new Usenet posts or subscriptions. Historical content remains viewable.
Dismiss

Help with missing rainbow

13 views
Skip to first unread message

tcroyer

unread,
Nov 9, 2010, 3:08:12 PM11/9/10
to
Yesterday, after a day or more of constant rain, there appeared in front of
my house a very impressive double rainbow. I grabbed my camera to get a
picture.

When using portrait orientation, I got three really good shots, but when I
changed to landscape, the rainbow faded and disappeared (right in the
optical viewfinder) (mostly -- I can see it very faintly in the processed
image).

What happened?

Camera: Sony A550 with 18-55mm f3.5-5.6. Post processing: Photoshop
Elements 8. Image format: RAW.

Given that I can see traces of the rainbow in the landscape mode shots, the
information must be there, but I can't figure out the PE8 incantations
necessary to bring it out.

Any suggestions will be greatly appreciated.

--
Tom Royer
If you're not free to fail, you're not free. -- Gene Burns


Alan Browne

unread,
Nov 9, 2010, 3:58:16 PM11/9/10
to


1. post what you've got so far.

2. Did you over expose?

3. Rainbows come.

4. and rainbows go.


--
gmail originated posts filtered due to spam.

jkneese

unread,
Nov 9, 2010, 4:10:59 PM11/9/10
to
Give this a try:

1. Be sure Layers panel is visible (Window > Layers)
2. Click Layers > Duplicate Layer (or click Ctrl + J)
3. Click the down arrow next to "Normal" in the blend mode drop-down
4a. Click "Multiply"
4b. Alternately, click "Overlay"
5a. If too dark or colorful, click down arrow by Opacity and adjust slider
5b. If not dark / vidid enough do step 2. again
6. When finished click Layers > Merge Visible or Flatten (Shift + Ctrl + E)

Let us know if this helps. Good luck!

"tcroyer" <t...@solidus-ts.com> wrote in message
news:KtSdnTu4Y9iyN0TR...@giganews.com...

Giganews

unread,
Nov 10, 2010, 5:20:48 PM11/10/10
to

"tcroyer" wrote: (clip) When using portrait orientation, I got three really

good shots, but when I
> changed to landscape, the rainbow faded and disappeared (right in the
> optical viewfinder) (mostly -- I can see it very faintly in the processed
> image).
>
> What happened?

^^^^^^^^^^^^^^^
When you say it disappeared in the *optical viewfinder,* do you mean a
through the lens viewfinder, or a separate optical path liker on the old
35mm rangefinder cameras? If it was through the lens, my next question is,
"were you using a polarizing filter?" Did you rotate the camera back to the
portrait orientation to see whether the rainbow came back? I can't think of
anything but a polarizer that could produce such an effect, and then only of
you are viewing through the lens.

I hope the three portrait shots were done in a mode for panoramic stitching.

Tim Conway

unread,
Nov 9, 2010, 6:38:05 PM11/9/10
to

"Giganews" <leo.li...@att.net> wrote in message
news:muSdnWVvwsnNVETR...@giganews.com...

Using a polarizing filter would lessen a rainbow under certain
circumstances.

Hopefully he can stitch together the portraits.


tcroyer

unread,
Nov 9, 2010, 7:19:11 PM11/9/10
to
"Giganews" <leo.li...@att.net> wrote in message
news:muSdnWVvwsnNVETR...@giganews.com...
>
>

Bingo !

Call me an idiot (actually, you're too late, I already did). As soon as I
read "polarizing filter", I knew what had had happened.

Thanks for the inputs.

Tom


peter

unread,
Nov 9, 2010, 8:57:47 PM11/9/10
to
On 11/9/2010 3:58 PM, Alan Browne wrote:

> 3. Rainbows come.
>
> 4. and rainbows go.
>

and for only a short time do they show

where they disappear to, does anybody know.

but they do seem brighter when you've had some rum


--
Peter

Paul Furman

unread,
Nov 10, 2010, 2:14:09 AM11/10/10
to

Could I get a little more explanation of this effect? I don't understand
how polarizers effected a rainbow...

Peter Chant

unread,
Nov 10, 2010, 2:17:51 AM11/10/10
to
Paul Furman wrote:

>> Call me an idiot (actually, you're too late, I already did). As soon as
>> I read "polarizing filter", I knew what had had happened.
>
> Could I get a little more explanation of this effect? I don't understand
> how polarizers effected a rainbow...

Presumably the light diffracted by a rainbow is polarised.

--
http://www.petezilla.co.uk

otter

unread,
Nov 10, 2010, 11:25:40 PM11/10/10
to
On Nov 10, 1:14 am, Paul Furman <pa...@-edgehill.net> wrote:
> tcroyer wrote:
> > "Giganews"<leo.licht...@att.net>  wrote in message

Rotating a polarized filter 90 degrees could do that. You can do the
same thing with light reflecting off water or glass.

Robert Coe

unread,
Nov 11, 2010, 9:30:53 AM11/11/10
to
On Tue, 9 Nov 2010 19:19:11 -0500, "tcroyer" <t...@solidus-ts.com> wrote:
: "Giganews" <leo.li...@att.net> wrote in message

I guess the takeaway from this story is, "At the end of a shoot, when you
return your camera to grabshot settings, be sure to remove the polarizer!" ;^)

Bob

peter

unread,
Nov 11, 2010, 10:44:57 AM11/11/10
to
On 11/11/2010 9:30 AM, Robert Coe wrote:

>
> I guess the takeaway from this story is, "At the end of a shoot, when you
> return your camera to grabshot settings, be sure to remove the polarizer!" ;^)
>

Now if only we can remove the polarizing threads from NGs.

--
Peter

M-M

unread,
Nov 11, 2010, 1:55:14 PM11/11/10
to
In article <KtSdnTu4Y9iyN0TR...@giganews.com>,
"tcroyer" <t...@solidus-ts.com> wrote:

> Given that I can see traces of the rainbow in the landscape mode shots, the
> information must be there, but I can't figure out the PE8 incantations
> necessary to bring it out.


"Auto Levels" usually works very well on rainbows.

--
m-m
http://www.mhmyers.com

tcroyer

unread,
Nov 12, 2010, 11:39:45 AM11/12/10
to
"Robert Coe" <b...@1776.COM> wrote in message
news:0tund6lb60icsjqe0...@4ax.com...

Amen to that.


>
> Bob
>


kara...@irchiver.com

unread,
Oct 11, 2012, 8:51:19 PM10/11/12
to
On Tue, 9 Nov 2010 15:08:12 -0500, "tcroyer" <t...@solidus-ts.com>
wrote:
Looking for a permanent solution buddy!

kara...@irchiver.com
0 new messages