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Old Oct 18, 2004, 10:42 PM   #11
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Norm,

The 100-300 Sigma is what I am looking at as well. It's been a few days since your last post so surely you've processed a few hundred images by now :lol:

Do you have any more input about the quality? Thanks
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Old Oct 19, 2004, 8:44 AM   #12
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There's just no comparison between the Sigma 100-300 f/4 and any OEM in this range!
http://www.photozone.de/2Equipment/easytxt.htm#Ztelel

They have two excellent entries with one being the 120-300mm f/2.8 EX that no one has
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Old Oct 19, 2004, 9:09 AM   #13
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All,

Thanks for all your input!

I made my decision mainly going off of example photos at the links gibson and norm posted and the price.

I bought the Canon - EF 75-300MM F4-5.6 USM III at BeachCamera for $172. The quality of the sample pics on the links was just fine for me. I'm sure if I was used to or was able to see a $900 lens next to a $172 lens I would see the difference, but since I have no bias at this point, this one should work great for me. I'll probably graduate to a bigger better lens in a year or so, after I recover from paying for the camera.

I'll post some pics next week after my 20D comes in.

Thanks,

Greg
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Old Oct 19, 2004, 9:18 AM   #14
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It's not just the range (or CA/sharpness)!

You're also paying for the extra f-stop (vs f/5.6 @ 300): ie the extra gain in shutter speed which might make the difference in being able to take a shot or not when you're already max out on the ISO...
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Old Oct 19, 2004, 10:10 AM   #15
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Yes, I forgot that part.

I'm hoping that all the hoopla I've read about the D20's low noise at high ISO will help me get deal with the higher f-stop.

We'll see......

Thanks,

Greg
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Old Oct 19, 2004, 1:36 PM   #16
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It takes a lot to make that tiny 1-stop happen:

The lens must collect twice the amount of light hence the much larger optics -> sturdier/heavier metal barrel -> bigger price tag!
... ditto when you go for an f/2.8 when the diameter of the lens barrel has to double again, which the 20D can really benefit from in the AF department
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Old Oct 19, 2004, 1:55 PM   #17
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YEs, you can get the shutter speed but the shot wouldn't look like the one at faster aperture. The booken is much better and you make the BG OOF which you can't do using a slower lens. Obviously you pay for it.
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Old Oct 19, 2004, 2:58 PM   #18
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Spotly,

I thought the Sigma f4 gave sharp and well toned results, I really liked the lens but it is just so HEAVY.

I was looking for something that i could walk round with and this in my humble opinion is notthe lens doing that. I have taken it back to the store.

I went to a wildlife park yesterday and missed a couple of good shots that the F4 would have captured - but as they say, you can't have your cake and your bun !

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