Conversations

Photos

Files

All groups

About

<< Previous Thread Image defect analysis - lens flare? Next Thread >>

Subject: Image defect analysis - lens flare?
Date: 2006-12-03 19:05:32
From: John Thurston

In looking at film from my TL120, I have
two images taken under very similar circumstances
which exhibit a similar defect. I've scanned
and put a sample at:
http://www.alaska.net/~thurston/images/Scan000844.jpg
or
http://tinyurl.com/wwaex

There was a third image taken under the same
circumstances which does not exhibit this defect.

As this appears in both left and right images
and is curved, I'm thinking this is lens flare.

Does anyone care to comment?
________________________________________
John Thurston
Juneau, Alaska
http://stereo.thurstons.us

Subject: Re: Image defect analysis - lens flare?
Date: 2006-12-04 08:03:11
From: Patrick Dube

Looks like a lens flare to me. Here is my "without a doubt" version of a TL-120 lens flare :

http://soliton.map-logix.com/images/others/TL120_LensFlare.jpg

Patrick

From: John Thurston
Reply-To: MF3D-group@yahoogroups.com
To: MF3D-group@yahoogroups.com
Subject: [MF3D-group] Image defect analysis - lens flare?
Date: Sun, 03 Dec 2006 15:50:04 -0900

In looking at film from my TL120, I have
two images taken under very similar circumstances
which exhibit a similar defect. I've scanned
and put a sample at:
http://www.alaska. net/~thurston/ images/Scan00084 4.jpg
or
http://tinyurl. com/wwaex

There was a third image taken under the same
circumstances which does not exhibit this defect.

As this appears in both left and right images
and is curved, I'm thinking this is lens flare.

Does anyone care to comment?
____________ _________ _________ _________ _
John Thurston
Juneau, Alaska
http://stereo. thurstons. us

Enter the "Telus Mobility Xbox a Day" contest for your chance to WIN! Telus Mobility is giving away an Microsoft Xbox� 360 every day from November 20 to December 31, 2006! Just download Windows Live (MSN) Messenger to your IM-capable TELUS mobile phone, and you could be a winner!

Subject: Re: Image defect analysis - lens flare?
Date: 2006-12-04 11:03:22
From: Dale Yingst

Patrick said,

Looks like a lens flare to me. Here is my "without a doubt"
version of a TL-120 lens flare :

Maybe this isn't a good sign. Poor lens coatings? Bad
bathroom lighting? WIth probably only a few hundred shots
taken by US owners of the TL120, these first reports are not
encouraging. I don't recall ever having a flared shot with my
S1 and I was never really particular about where the sun was.
I did get a pair of collapsable lens hoods which look okay even
though they crush together slightly in the center. Guess I'll
need to leave them on.

Dale Yingst

Subject: Re: Image defect analysis - lens flare?
Date: 2006-12-04 13:50:03
From: roderickdsage

--- In MF3D-group@yahoogroups.com, "Dale Yingst" wrote:

>
>
>
> Patrick said,
>
> Looks like a lens flare to me. Here is my "without a doubt"
> version of a TL-120 lens flare :
>
>

Looks like a lens flare but not a typical flare with "specular
highlights" (if that's a correct term). Normal flares are sharper or
defined rather than the soft blur I see in yours. Could they be from
internal reflection?
http://images.google.com/images?hl=en&q=lens+flare&btnG=Search+Images

Rod S

Subject: Re: Image defect analysis - lens flare?
Date: 2006-12-04 21:22:11
From: John Thurston

John Thurston wrote:

> As this appears in both left and right images
> and is curved, I'm thinking this is lens flare.
>
> Does anyone care to comment?

Harry Calderbank sent me a sample image off-list
(with permission to post) and has this to say:

"Flare is definitely a problem with this
camera. I've had a number of bright day
time shots with just a hint of a crescent
shape of flare showing. Not all the
time though. Can't figure that one out."

http://www.alaska.net/~thurston/images/lensflare.jpg
- or -
http://tinyurl.com/yngxpn

Like I said, I have three images taken on
the same overcast day. Two exhibit the
flare marks, the third does not.

Anyone else see this kind of stuff with
their TL120?
________________________________________
John Thurston
Juneau, Alaska
http://stereo.thurstons.us