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Equipment >> Lens Matters
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Osprey
newbie


Reged: 13/05/2008
Posts: 5
Loc: Neath, South Wales or Telford,...
Zuiko 70-300 or Sigma 120-400
      #802488 - 18/06/2009 18:30

Hi all,

I've got an Oly 4/3 kit and would like to increase my zoom options for things like motorsport and wildlife photos. My current lenses are the 14-42 & 50-150 kit lenses.

I only have a [reasonably] small budget and have narrowed the search to the Oly 70-300 or the now discountinued (but i've got a source!) Sigma 120-400.

Can someone give me some help / guidance ideally with some experience of one or both of the lenses.

Thank you and please be gentle on the new-boy

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pauljolee
newbie


Reged: 20/05/2008
Posts: 16
Re: Zuiko 70-300 or Sigma 120-400 [Re: Osprey]
      #802510 - 18/06/2009 19:46

If your source has more than one Osprey could you let me know Tough call though with choice but I use the Sigma 50-500 for airshows and love it although I find myself hovering around the 400mm mark when getting best results.I would love to have a go of the 70-300 for comparison

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Learning
Ethelred the Ill-Named


Reged: 26/09/2006
Posts: 3703
Loc: Nottingham
Re: Zuiko 70-300 or Sigma 120-400 [Re: pauljolee]
      #802555 - 18/06/2009 21:36

Just a thought.(I don't really know). Sigma design their lenses for C size or full frame at a push. Central performance may suffer as a result. Oly design to give optimum image quality for four thirds.

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El Sid
Going potty


Reged: 14/04/2003
Posts: 10754
Loc: Sussex-by-the-Sea
Re: Zuiko 70-300 or Sigma 120-400 [Re: Learning]
      #802830 - 19/06/2009 12:40

Quote:

Just a thought.(I don't really know). Sigma design their lenses for C size or full frame at a push. Central performance may suffer as a result. Oly design to give optimum image quality for four thirds.



Generally lenses give their best performance in the central area. Since the 4/3rds format is cropping a much smaller portion from the centre of the image circle Oly users are very unlikely to see much, if any, loss in IQ at the corners/edges when using an full frame or even a APS format Sigma. The Oly may be optimised for 4/3rds but the frame is using most of the image circle and I'd expect slightly more drop off in quality at the corners than you'd get from the Sigma lenses.

--------------------
Nigel

Completely BSRIPN

ElSid Gallery

Terrorist?............or potential photographer?.......

There are no people more opressed than those who willingly opress themselves

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