Sigma 10-20mm F4-5.6 EX DC HSM User Group

[egnaro]

Yes, confirmed its a function of the number of blades - in this case 6.

If you like more arrows in your starburst, the F3.5 model has 7. That's also a nice lens, but the filter size is 82mm, so be prepared to pay. When I tested it, it was like very bright in comparison to the F4-5.6, only thing is at F5.6, the smaller lens was subjectively a little sharper. Most of the time you're shooting at smaller apertures anyway, so its not going to make a significant difference.

Thanks for the infor.

My Sigma 24-70 HSM oso 82mm..

It make sense for me to buy 82mm diameter lens.

 

[Jennyfur80]

Been bz for the past week. Thank you guys for explaining the flare issue. Time to look for this lens in the marketplace.

 

[nabelrock]

hi everyone, just got this lens, pretty contented with the results, some obvious vignetting present as I was using a non slim B+W CPL, but it's no big deal for me

 

[azurebluee]

hi everyone, just got this lens, pretty contented with the results, some obvious vignetting present as I was using a non slim B+W CPL, but it's no big deal for me

This is nice. So far with 1 non slim filter mounted, theres no vignetting that I can spot. Do a test shoot at a white wall. 2 filters stack together will definitely vignette.

I suspect the 'vignetting' might be caused by the CPL uneven polarization that is a common thing with CPL on wide angle lens. Not too sure in your case. http://www.luminous-landscape.com/tutorials/polarizers.shtml or could be due to

'light fall off' http://www.taunusreiter.de/Cameras/vignettes.html

Hope this helps.

 

[azurebluee]

Taken sometime back

@16mm F14 20secs

 

[hotchoco1ate]

Taken sometime back

@16mm F14 20secs

Sharp pic but common perspective. Seen 329349123 times at this angle already :bsmilie:

 

[azurebluee]

Sharp pic but common perspective. Seen 329349123 times at this angle already :bsmilie:

Yeah, thats why it has not been posted in the landscape gallery.

 

[azurebluee]

@10mm F10 6secs

 

[hellfire88]

what is the aperture sweet spot for this lens?

 

[infineum6822]

what is the aperture sweet spot for this lens?

betwn f8-11 for me.

 

[nabelrock]

same for me

betwn f8-11 for me.

 

[azurebluee]

same for me

mine too. f8-11. It seems a little soft beyond f16.

 

[rcheong1282]

Got mine earlier this week & took it out for testing on my way to work on wednseday morning.

at 10mm, f11.

like the wide angle coverage so far, will try more shots when i go to Korea in a few days' time.

 

[engrmariano]

any one of you tried this lens on FF? at what FL the vignetting will disappear?

thinking of getting one to use for 550D & 5D2...

 

[Kenneth67C]

any one of you tried this lens on FF? at what FL the vignetting will disappear?

thinking of getting one to use for 550D & 5D2...

Its a DC lens, not meant for FF, but its great on the 550d.

 

[azurebluee]

10mm F11 1/200.

 

[infineum6822]

10mm F11 1/200.

I like this effect. Good attempt.

 

[azurebluee]

Was clearing some old photos and came across this. Blended with photomatix.

10mm

 

[JacePhoto]

nice...

 

[chiangkxv]

any one of you tried this lens on FF? at what FL the vignetting will disappear?

thinking of getting one to use for 550D & 5D2...

IIRC, it is only usable from 16mm onwards. need to google for confirmation.