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Photo Forum / Digital Photography / DSLR Cameras / March 2005

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Sensor dust and ?

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Slack - 30 Mar 2005 05:39 GMT
What can cause this hexagon shaped thing?
http://www.pbase.com/slack/image/41417395  Here's a better view
http://www.pbase.com/slack/image/41417394

And I'm assuming my sensor is pretty filthy ?
http://www.pbase.com/slack/image/41417396

On a brighter note, my camera is picking up colors perfectly
http://www.pbase.com/slack/image/41417398
--
Slack
Jay Beckman - 30 Mar 2005 05:52 GMT
> What can cause this hexagon shaped thing?
> http://www.pbase.com/slack/image/41417395  Here's a better view
> http://www.pbase.com/slack/image/41417394

Lens flare...try either a lens shade, or hold your hand out over the lens to
flag off the sun.

> And I'm assuming my sensor is pretty filthy ?
> http://www.pbase.com/slack/image/41417396

Probably dust on the sensor.

> On a brighter note, my camera is picking up colors perfectly
> http://www.pbase.com/slack/image/41417398

Most vibrant image of highliters I've ever seen.
Jeremy Nixon - 30 Mar 2005 05:54 GMT
> What can cause this hexagon shaped thing?
> http://www.pbase.com/slack/image/41417395  Here's a better view
> http://www.pbase.com/slack/image/41417394

Flare.  Use a lens hood.

> And I'm assuming my sensor is pretty filthy ?
> http://www.pbase.com/slack/image/41417396

It could use a cleaning, yes.

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Jeremy  |  jeremy@exit109.com

Alan Browne - 30 Mar 2005 15:10 GMT
>>What can cause this hexagon shaped thing?
>>http://www.pbase.com/slack/image/41417395  Here's a better view
>>http://www.pbase.com/slack/image/41417394
>
> Flare.  Use a lens hood.

Often need more than many hoods provide, esp. at wide angle.  Use hand,
grey card, umbrella... etc. to block.

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-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
--        r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
--      [SI] gallery & rulz: http://www.pbase.com/shootin
--                   e-meil: there's no such thing as a FreeLunch.

Rob - 30 Mar 2005 06:00 GMT
> What can cause this hexagon shaped thing?
> http://www.pbase.com/slack/image/41417395  Here's a better view
> http://www.pbase.com/slack/image/41417394

I think that I would phone home about that - lens flair

> And I'm assuming my sensor is pretty filthy ?
> http://www.pbase.com/slack/image/41417396

yep

> On a brighter note, my camera is picking up colors perfectly
> http://www.pbase.com/slack/image/41417398
Alan Browne - 30 Mar 2005 15:09 GMT
> What can cause this hexagon shaped thing?
> http://www.pbase.com/slack/image/41417395  Here's a better view
> http://www.pbase.com/slack/image/41417394

Looks like simple lens flare to me.  You had light from teh sun falling
on the lens (without necc. being in the image).  Use your hand, grey
card or umbrella as a lens shade when taking such images.  Alternately,
just make the flare (and sun) part of the image:
http://www.pbase.com/shootin/image/37709986

> And I'm assuming my sensor is pretty filthy ?
> http://www.pbase.com/slack/image/41417396

Don't sweat it unless you take a lot of bright, even scenes with small
apertures.

Cheers,
Alan.

Signature

-- r.p.e.35mm user resource: http://www.aliasimages.com/rpe35mmur.htm
--        r.p.d.slr-systems: http://www.aliasimages.com/rpdslrsysur.htm
--      [SI] gallery & rulz: http://www.pbase.com/shootin
--                   e-meil: there's no such thing as a FreeLunch.

Owamanga - 30 Mar 2005 15:21 GMT
>Looks like simple lens flare to me.  You had light from teh sun falling
>on the lens (without necc. being in the image).  Use your hand, grey
>card or umbrella as a lens shade when taking such images.  Alternately,
>just make the flare (and sun) part of the image:
>http://www.pbase.com/shootin/image/37709986

Have you tried a similar shot with the 7D yet?

--
Owamanga!
http://www.pbase.com/owamanga
 
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