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Forum: Pentax Full Frame
07-28-2016, 10:37 AM
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The equivalent (in terms of FOV and DOF) of the Sigma 10-20/3.5 for APS would be a 15-30/5.0 for FF that would probably have similar price and weight, but it does not exist.
But if one wants low price and weight, I think that the K-1 is not the best option.
If fully understand why the 15-30 proposed by Pentax opens at f/2.8, because it offers something that was not available on APS cameras.
Nevertheless, you can use the Sigma 10-20/3.5 in the range 15-20 on your K-1, and it will do the job almost as efficiently as a dedicated FF 15-20/5.0.
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