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04-27-2011, 06:01 PM   #1
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Trying to find a lense

Hello. I got a ist DS from my dad when he passed away. I dont know much about this camera as far as what the lense numbers mean and things like that. I was wondering if some on could suggest a lense that I could use to zoom in on things, like far shots of animals at the zoo, that is not expensive. I have a 1:2.8 100mm lense but its not cutting it.

Any suggestions would be great.

Thank you,

Jason

04-27-2011, 06:09 PM   #2
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I have been testing a Tamron 28~200mm XR IF, and it seems pretty good - good sharpness, good contrast, good overall image quality, it is auto-focus and it is a good range with the 28~200. You can get it new somewhere around 250-300...
04-27-2011, 06:14 PM   #3
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OK.. Another thing... I dont understand the numbers. Like the 28~100mm. Sorry..
04-27-2011, 06:24 PM   #4
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QuoteOriginally posted by MajorIssues Quote
OK.. Another thing... I dont understand the numbers. Like the 28~100mm. Sorry..
This means that the lens is a zoom lens with a focal length range between 28mm and 100mm. (or about 3.6 optical zoom).

Your current lens is a 100mm f2.8 (1:2.8). That is, your lens corresponds to the upper end of the zoom lens 28-100mm. The lower end (28 mm) is a much wider focal length (ie you will see a wider picture).

04-27-2011, 06:29 PM   #5
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So the higher the number the longer the range?
04-27-2011, 06:43 PM   #6
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The budget choice I'd recommend is the Tamron 70-300 LD Di (in Pentax mount). The step up from this would be the Pentax DA 55-300mm. Here are my zoo photos with the Pentax (the flamingoes lion tamarin and spider monkeys were shot with the FA 50mm 1.4) https://picasaweb.google.com/bonhommed/TorontoZoo#

Last edited by audiobomber; 04-27-2011 at 06:49 PM.
04-27-2011, 06:50 PM   #7
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QuoteOriginally posted by MajorIssues Quote
So the higher the number the longer the range?
For a 28-100 mm zoom, the range is between 28 and 100mm. The longest end 100mm is the maximum zoom. The smallest end (28mm) is the widest angle.
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