Sigma 18-50mm at f2.8, share your pics anyone?


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clicknick

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Apr 13, 2005
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#1
Just interested to know how soft or sharp this lens can get when used wide open at f2.8. Any one use before can comment, or better yet post some pics taken at f2.8? Thanks.
 

lsisaxon

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Nov 29, 2004
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#2
All shot on D2X. Full frame resized and sharpened.

Sigma 18-50/2.8 @ 18/2.8


Sigma 18-50/2.8 @ 18/5.6


Nikon 18-200/3.5-5.6 @ 18/4.0 (for reference)
 

lsisaxon

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Nov 29, 2004
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#3
All shot on D2X (12mp). Center 100% crop (no sharpen).

Sigma 18-50/2.8 @ 18/2.8


Sigma 18-50/2.8 @ 18/5.6


Nikon 18-200/3.5-5.6 @ 18/4.0 (for reference)
 

lsisaxon

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Nov 29, 2004
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#4
All shot on D2X (12mp). Right side 100% crop (no sharpen)

Sigma 18-50/2.8 @ 18/2.8


Sigma 18-50/2.8 @ 18/5.6


Nikon 18-200/3.5-5.6 @ 18/4.0 (for reference)
 

lsisaxon

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Nov 29, 2004
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#5
All shot on D2X (12mp). Bottom-right 100% crop (no sharpen)

Sigma 18-50/2.8 @ 18/2.8


Sigma 18-50/2.8 @ 18/5.6


Nikon 18-200/3.5-5.6 @ 18/4.0 (for reference)
 

xotic

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Oct 5, 2005
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#6
I like what Nikon 18 - 200 mm is producing.
 

szekiat

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Jan 19, 2002
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#8
the nikon seems exceptionally bright compared to the rest. Its also interesting how the moon at f2.8 is bigger than the rest.
 

lsisaxon

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Nov 29, 2004
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#9
szekiat said:
the nikon seems exceptionally bright compared to the rest. Its also interesting how the moon at f2.8 is bigger than the rest.
It is due to blooming (the moon was really bright) plus the coma of the lens wasn't corrected that well. Don't judge the exposures with these shots because the sun was setting really fast and the sky darkens very quickly. I shot with the 18-200 first which is why it appears brighter. Everything is shot on A mode with matrix metering.
 

clicknick

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Apr 13, 2005
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#10
Wow, thanks for the pics Isisaxon, this is exactly what i wanted to see.
 

wind30

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Mar 14, 2004
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#11
nice plots...

I think a few more people will join the already LONG queue for the 18-200 VR...
 

lsisaxon

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#12
wind30 said:
nice plots...

I think a few more people will join the already LONG queue for the 18-200 VR...
Plots? :)
 

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