Newbie Question

[Joe Refkin]

What are those wavy lines of distortion around various objects in our pics and how does one avoid them in the 1st place and remove them in the 2nd place?

Thanks,
Joe R
--
'the fun is in the getting there'

 

[JediBear]

What on earth are you talking about?
Can you point us to an example?
Ta!

What are those wavy lines of distortion around various objects in
our pics and how does one avoid them in the 1st place and remove
them in the 2nd place?

Thanks,
Joe R

 

[Jordan Robbins]

Not sure what your talking about... can you post some examples?

Some guesses what you may be referring to...

1) halos around edges due to oversharpening (this is a post-processing problem and not a camera problem... but they arent generally wavy)?

2) Chromatic aberation - something like purple fringing around edges where colors change... this is a lens problem... poorer quality lenses are often more prone to it

3) Morie - when a tight pattern (like bricks of a striped shirt) looks a bit wavy - havent really seen this happen with this camera and it really should not - sometimes this will be seen if your not viewing a photo at 100% of may be caused when you try to compress an image in post-processing but again this would be a fault of the image editors compression algorithims and not the camera.

4) Very poor quality lens yeilding some extremely abnormal distortion - I think this would take a particularly messed up lens for the images to appear wavy but a guess its possible... more likely this could be caused by a poor quality filter attached to a lens

No idea if this is what your seeing or if these are the reasons why but they are just some possible guesses. We really need to see an image to be of more help.

-Jordan

What are those wavy lines of distortion around various objects in
our pics and how does one avoid them in the 1st place and remove
them in the 2nd place?

Thanks,
Joe R
--
'the fun is in the getting there'

--
-Jordan

 

[cdyson37]

Flower petals and the like just slightly out of focus tend to have slight halos too.

Some guesses what you may be referring to...
1) halos around edges due to oversharpening (this is a
post-processing problem and not a camera problem... but they arent
generally wavy)?
2) Chromatic aberation - something like purple fringing around
edges where colors change... this is a lens problem... poorer
quality lenses are often more prone to it
3) Morie - when a tight pattern (like bricks of a striped shirt)
looks a bit wavy - havent really seen this happen with this camera
and it really should not - sometimes this will be seen if your not
viewing a photo at 100% of may be caused when you try to compress
an image in post-processing but again this would be a fault of the
image editors compression algorithims and not the camera.
4) Very poor quality lens yeilding some extremely abnormal
distortion - I think this would take a particularly messed up lens
for the images to appear wavy but a guess its possible... more
likely this could be caused by a poor quality filter attached to a
lens

No idea if this is what your seeing or if these are the reasons why
but they are just some possible guesses. We really need to see an
image to be of more help.

-Jordan

What are those wavy lines of distortion around various objects in
our pics and how does one avoid them in the 1st place and remove
them in the 2nd place?

Thanks,
Joe R
--
'the fun is in the getting there'

--
-Jordan

 

[Joe Refkin]

What are those wavy lines of distortion around various objects in
our pics and how does one avoid them in the 1st place and remove
them in the 2nd place?

Thanks,
Joe R

--Thanks for responding. I'm referring to the distortion seen around the edges of most objects in almost any picture. I find it on many of the examples posted on the list and photo sig etc. I never ever find it on film pictures.
The 300D seems to be superior to all the digital prosumer cams.

'the fun is in the getting there'

 

[DannyV]

What are those wavy lines of distortion around various objects in
our pics and how does one avoid them in the 1st place and remove
them in the 2nd place?

Thanks,
Joe R

--Thanks for responding. I'm referring to the distortion seen
around the edges of most objects in almost any picture. I find it
on many of the examples posted on the list and photo sig etc. I
never ever find it on film pictures.
The 300D seems to be superior to all the digital prosumer cams.

'the fun is in the getting there'

--
Daniel
http://www.pbase.com/dvogel11
300D tips http://www.bahneman.com/liem/photos/tricks/digital-rebel-tricks.html
300D FAQ at http://www.marius.org/fom-serve/cache/3.html

 

[chriso86]

An additional source to the four Jordan mentioned is noise around sharp edges that comes from using the jpeg format with a high compression ratio (usually used to create small files for the web...)

--
http://www.pbase.com/chriso

Not sure what your talking about... can you post some examples?

Some guesses what you may be referring to...
1) halos around edges due to oversharpening (this is a
post-processing problem and not a camera problem... but they arent
generally wavy)?
2) Chromatic aberation - something like purple fringing around
edges where colors change... this is a lens problem... poorer
quality lenses are often more prone to it
3) Morie - when a tight pattern (like bricks of a striped shirt)
looks a bit wavy - havent really seen this happen with this camera
and it really should not - sometimes this will be seen if your not
viewing a photo at 100% of may be caused when you try to compress
an image in post-processing but again this would be a fault of the
image editors compression algorithims and not the camera.
4) Very poor quality lens yeilding some extremely abnormal
distortion - I think this would take a particularly messed up lens
for the images to appear wavy but a guess its possible... more
likely this could be caused by a poor quality filter attached to a
lens

No idea if this is what your seeing or if these are the reasons why
but they are just some possible guesses. We really need to see an
image to be of more help.

-Jordan