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how bad is dust in the lens ?



 
 
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  #1  
Old October 20th 05, 12:18 AM
Nic. Santean
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Default how bad is dust in the lens ?

The lens for medium-format seem to be very "dust-friendly" - due to their
bulkiness, I guess. My question is: how big is the impact of dust on the
elements of a lens to the quality of pictures taken? Are there visible
effects, like blur?

I have old cameras with some dust on the lens and they still take great
pictures. However, I guess that it depends on the quantity of dust (or
fungi). Any thoughts?

Nic.


  #2  
Old October 20th 05, 08:44 AM
Vincent Becker
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Default how bad is dust in the lens ?


The lens for medium-format seem to be very "dust-friendly" - due to their
bulkiness, I guess. My question is: how big is the impact of dust on the
elements of a lens to the quality of pictures taken? Are there visible
effects, like blur?


The influence of dust is more or less proportional to the surface of
lens they hide. So it would require a great amount of dust or fungus to
impact notably on the picture.

--
Vincent Becker
Photographies et appareils anciens - Photography and classic cameras
URL:http://www.lumieresenboite.com
  #3  
Old October 20th 05, 11:30 AM
Chris Brown
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Default how bad is dust in the lens ?

In article ,
Nic. Santean wrote:
The lens for medium-format seem to be very "dust-friendly" - due to their
bulkiness, I guess. My question is: how big is the impact of dust on the
elements of a lens to the quality of pictures taken? Are there visible
effects, like blur?

I have old cameras with some dust on the lens and they still take great
pictures. However, I guess that it depends on the quantity of dust (or
fungi). Any thoughts?


IME a small amount of visible dust in the lens makes bugger-all difference
to image quality. YMMV.


  #4  
Old October 20th 05, 02:46 PM
Lorem Ipsum
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Default how bad is dust in the lens ?


"Vincent Becker" wrote in message
...

The lens for medium-format seem to be very "dust-friendly" - due to their
bulkiness, I guess. My question is: how big is the impact of dust on the
elements of a lens to the quality of pictures taken? Are there visible
effects, like blur?


The influence of dust is more or less proportional to the surface of lens
they hide. So it would require a great amount of dust or fungus to impact
notably on the picture.

--
Vincent Becker
Photographies et appareils anciens - Photography and classic cameras
URL:http://www.lumieresenboite.com



  #5  
Old October 20th 05, 10:29 PM
Stacey
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Default how bad is dust in the lens ?

Nic. Santean wrote:

The lens for medium-format seem to be very "dust-friendly" - due to their
bulkiness, I guess. My question is: how big is the impact of dust on the
elements of a lens to the quality of pictures taken? Are there visible
effects, like blur?

I have old cameras with some dust on the lens and they still take great
pictures. However, I guess that it depends on the quantity of dust (or
fungi). Any thoughts?


It's more likely to cause flare issues and effect contrast a bit in certain
shooting conditions. That said, if you use a lens hood, I've shot with some
REALLY ugly piece of glass that performed great.

Then again something that will KILL lens performance is a "foggy" lens, like
one that has oil/grease vapors on internal elements. Makes for very low
contrast images.

--

Stacey
 




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