Somewhat recently, I acquired a Sigma 50-500 also simply called the "Bigma". With a 10x zoom ratio, it's quite a unique lens as it offers an unmatched zoom range among all manufacturers. One would expect such a zoom to offer pretty poor image quality. However, I found it to be much much better than I had expected. Actually, I find its IQ to be very descent even wide-open (f/6.3) at 500mm! Quite an impressive performance considered the range.
Check out the samples below. Except for the last one, they were all shot wide-open at 500mm on a Pentax K5.
Check out the samples below. Except for the last one, they were all shot wide-open at 500mm on a Pentax K5.
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| Moon - heavily crop, around 70-80% |
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| Local chit-chat |
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| The obligatory flowers |
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| Lovey dovey |
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| Checking out the bokeh at 500mm |
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| What were they looking at? |
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| Beach @ Moods |
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| Very descent bokeh |
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