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Old May 12, 2005, 6:20 PM   #11
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I do a lot of band concert photography and some of the indoor stuff at the high schools can be challenging (which is good) for a rookie like me. Dark stages and spotlight have been giving me fits so far. What i have been using on my Rebel XT are: a Canon EF 28-105mm f/3.5-4.5 II and a Canon EF 75-300mm IS USM.

Other than the occasional close up of people that appear to be glowing I have been fairly satisfied. It was suggested to me that I needed a faster lens which is why I started reading threads like this one and lens reviews.

I read a posting today that suggested tweaking the XT parameter settings to sharpen the image and to lower the saturation. Which sounds like something I need to try.

Thoughts on my situation?

Mark


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Old May 12, 2005, 9:36 PM   #12
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mrcoons wrote:
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Thoughts on my situation?
... Well it's more than lens speed - Both of your lenses are not quite good in the 1st place according to the MTF charts with the EF 75-300mm IS USM clearly trailing the EF 28-105mm f/3.5-4.5 II:








As compared to the EF 28-135 IS USM for example - the closest matching lens in the same focal range:



-> The picture will be clearly sharper with the EF 28-135 IS USM with the same f/3.5-5.6 maximum aperture (and identical camera parameter settings)
- FYI: http://www.photozone.de/3Technology/mtf.htm
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Old May 12, 2005, 10:07 PM   #13
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Now if you compare against 'digital' lenses like the Sigma 18-125 f/3.5-5.6(also of the same speed) or the EF-S 17-85 IS USM, theses lenses optimized for APS-C size sensors are clearly sharper still (Sigma only plots wide open - ie compare theses red/green against the black lines on Canon charts):




i.e. you don't need faster lenses -> What you need is sharper lenses

For example, most of theses images are shots in low-light as well: http://www.fredmiranda.com/forum/topic2/143791
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Old May 13, 2005, 8:25 AM   #14
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Thanks NHL, you have certainly given me some material to read over.

Just to be sure I am understanding your position: you feel that the Sigma 18-125 f/3.5-5.6 DC is sharper than the Canon EF 28-135 IS USM ?

The Sigma 18-125 f/3.5-5.6 DClens certainly won't break the bank either. Thanks again.

Mark

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