Vignetting effect


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ksong

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Sep 14, 2008
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#1
Just wanna know how true is it.
Vignetting effect (w/o using any filter) can happen on any DSLR body and any lenses. This is what I was told by a technician after I brought my camera for servicing.

I am not talking about the effects that was created on purpose, but just take a photo randomly and you will see it on your photo without any filter or lens hood attached, outdoor or indoor. All modes, all settings.

Thanks!
 

Nenjia

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Sep 19, 2007
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#2
need example :bsmilie::bsmilie:
 

Octarine

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#3
Vignetting effect (w/o using any filter) can happen on any DSLR body and any lenses. [...] but just take a photo randomly and you will see it on your photo without any filter or lens hood attached, outdoor or indoor. All modes, all settings.
That's inaccurate and too generic.
Read the lens reviews and you will see that vignetting is an effect that occurs on all lenses to a certain degree. Some are very prone to it, some don't show anything that the normal eye would notice. But stepping down the aperture usually helps to reduce it below the level that most people recognize.
http://en.wikipedia.org/wiki/Vignetting#Optical_vignetting
Pick a lens at random and read:
http://www.photozone.de/Reviews/overview
http://www.dpreview.com/lensreviews/
 

Last edited:

ksong

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Sep 14, 2008
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#4






Sorry for the big image, I dont know how to reduce the size here. See all the 4 corners, all are dark.
 

Nenjia

Senior Member
Sep 19, 2007
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#5
DSC_0062.jpg
227K
800 * 535
0221
NIKON CORPORATION
NIKON D80
2008:08:02 17:49:14
1/4000s
F3.5
18
ISO 250
0.0
F3.5

this is your exif , so try to close aperture 3.5 and 1/4000 is too big and fast lah hehe

in most of case, in middle of aperture will result the best, try F8?
 

ahtshun23

New Member
Oct 25, 2007
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Clementi
#6
DSC_0062.jpg
227K
800 * 535
0221
NIKON CORPORATION
NIKON D80
2008:08:02 17:49:14
1/4000s
F3.5
18
ISO 250
0.0
F3.5

this is your exif , so try to close aperture 3.5 and 1/4000 is too big and fast lah hehe

in most of case, in middle of aperture will result the best, try F8?

hi nenjia,

i just curious on how did u manage to get the pic details. can share on the steps?Thank alots
 

Octarine

Moderator
Staff member
Jan 3, 2008
12,517
31
48
Pasir Ris
#7
i just curious on how did u manage to get the pic details. can share on the steps?
The details are in the exif headers, embedded in the picture. Either you save the picture locally on your hard disk and open with a picture viewer / editor that can show them or you get the plug-ins for your browser (if available). Firefox has at least 2 plug-ins available where you can see the exif header via right-click on the picture.
 

calebk

Senior Member
Jul 25, 2006
10,594
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Clementi
#8
You'd want to stop down your aperture. Most of the time when your aperture is wide open, you'll see vignetting, especially if the lens is prone to it.
 

ahtshun23

New Member
Oct 25, 2007
72
0
0
Clementi
#9
The details are in the exif headers, embedded in the picture. Either you save the picture locally on your hard disk and open with a picture viewer / editor that can show them or you get the plug-ins for your browser (if available). Firefox has at least 2 plug-ins available where you can see the exif header via right-click on the picture.

thank you..how about JPEG image?can we view the details as well?
 

Nenjia

Senior Member
Sep 19, 2007
3,521
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#11
hi nenjia,

i just curious on how did u manage to get the pic details. can share on the steps?Thank alots
there are many software can do this Opada/iexif/nEO iMAGING ..... best thing--they are free!
 

Nenjia

Senior Member
Sep 19, 2007
3,521
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#12
and some adding:

lower ISO slower shutter, and smaller aperture (larger F number) will lead to better image quality:bsmilie::bsmilie:
 

catchlights

Moderator
Staff member
Sep 27, 2004
21,903
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Punggol, Singapore
www.foto-u.com
#13
to be exact you are taking about light fall off, that depends on the design of lenses,

mostly Vignetting are cause by using a wrong lens, wrong lens hood or stacking filters.
 

Nenjia

Senior Member
Sep 19, 2007
3,521
0
0
#14
to be exact you are taking about light fall off, that depends on the design of lenses,

mostly Vignetting are cause by using a wrong lens, wrong lens hood or stacking filters.

but the threat starter said no filter no hood, and kit lens 18-135:bsmilie:
 

calebk

Senior Member
Jul 25, 2006
10,594
0
0
Clementi
#15
to be exact you are taking about light fall off, that depends on the design of lenses,

mostly Vignetting are cause by using a wrong lens, wrong lens hood or stacking filters.
Light fall off = vignetting.

Physical vignetting is caused by wrong lens hood, wrong filter, stacking of filter or using a lens of smaller image circle on a larger format.

Then there is inherent light fall off (also called vignetting) but that is an inherent flaw of the lens. Here we are seeing an inherent flaw of the kit lens, that is when shooting with the kit lens wide open, some vignetting is slightly visible. Note that for smaller image circle lenses, vignetting from lens design tends to be more pronounced because the optical circle is designed for the smaller sensor, whereas with full-frame designed lenses, you are using the sweet center spot of the lens' image circle, so any inherent light fall off is not so easily visible.
 

Last edited:

Nenjia

Senior Member
Sep 19, 2007
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#16
for this case report, a reason might be the spot metering used, matrix, will be better in above 3 photos
 

Octarine

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Staff member
Jan 3, 2008
12,517
31
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Pasir Ris
#17
for this case report, a reason might be the spot metering used, matrix, will be better in above 3 photos
Please explain how metering can affect vignetting. Just curious ...
 

ksong

New Member
Sep 14, 2008
42
0
0
#18
That's inaccurate and too generic.
Read the lens reviews and you will see that vignetting is an effect that occurs on all lenses to a certain degree. Some are very prone to it, some don't show anything that the normal eye would notice. But stepping down the aperture usually helps to reduce it below the level that most people recognize.
http://en.wikipedia.org/wiki/Vignetting#Optical_vignetting
Pick a lens at random and read:
http://www.photozone.de/Reviews/overview
http://www.dpreview.com/lensreviews/
So the technician was right in a way? Thanks for the link, will do some read up.

DSC_0062.jpg
227K
800 * 535
0221
NIKON CORPORATION
NIKON D80
2008:08:02 17:49:14
1/4000s
F3.5
18
ISO 250
0.0
F3.5

this is your exif , so try to close aperture 3.5 and 1/4000 is too big and fast lah hehe

in most of case, in middle of aperture will result the best, try F8?
Will try on that this weekend, thanks! ^^

You'd want to stop down your aperture. Most of the time when your aperture is wide open, you'll see vignetting, especially if the lens is prone to it.
So my kit lens is prone to having that effect... oh, I had that when using a 70-210mm borrowed from my friend.

and some adding:

lower ISO slower shutter, and smaller aperture (larger F number) will lead to better image quality:bsmilie::bsmilie:
I think I need to read up more, try diff settings...

but the threat starter said no filter no hood, and kit lens 18-135:bsmilie:
Ya, I thought it was because of the 3rd party filter I used... so I removed it, but still having the same 'problem'
 

ksong

New Member
Sep 14, 2008
42
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0
#19
Light fall off = vignetting.

Physical vignetting is caused by wrong lens hood, wrong filter, stacking of filter or using a lens of smaller image circle on a larger format.

Then there is inherent light fall off (also called vignetting) but that is an inherent flaw of the lens. Here we are seeing an inherent flaw of the kit lens, that is when shooting with the kit lens wide open, some vignetting is slightly visible. Note that for smaller image circle lenses, vignetting from lens design tends to be more pronounced because the optical circle is designed for the smaller sensor, whereas with full-frame designed lenses, you are using the sweet center spot of the lens' image circle, so any inherent light fall off is not so easily visible.
:bigeyes: chim!! I need time to digest all these replies...

Please explain how metering can affect vignetting. Just curious ...
I wish to know too, someone ever explained to me what is spot metering, but am curious to know how it can affect on the vignetting effect. Thanks!

************

Thanks all for the replies. :thumbsup:
 

Nenjia

Senior Member
Sep 19, 2007
3,521
0
0
#20
:bigeyes: chim!! I need time to digest all these replies...



I wish to know too, someone ever explained to me what is spot metering, but am curious to know how it can affect on the vignetting effect. Thanks!

************

Thanks all for the replies. :thumbsup:
it is NOT b'cos spot metering, can affect on the vignetting effect, it affect the light condition, just try spot/center weight/matrix in different light condition, you will see the different, take you cam and try out and read manual!:bsmilie:
 

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