Lens variations

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Joe Moche Regular Member • Posts: 178
Lens variations
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A common theme on many of these forums involves folks who argue over the sharpness of a particular lens.  The argument often ends with "You got a bad sample.  Send it back."  Honestly, there seem to be an awful lot of "bad samples" floating around out there.  Is the lens manufacturing process really so loose that a high number of bad samples would be produced?  Are bad samples just an aberration, or is there a range of sharpness (from great to poor) that affects all lenses?  Do lens manufacturers test a lens before boxing it up, and is there some minimum level of performance that renders the lens "good enough?"  Finally, how can one know if a newly-purchased lens is a bad sample, other than by making a totally subjective assessment by comparing results to results claimed by others?

I have neither the time, skill, or desire to run lab tests on every lens I buy, and if a lens doesn't meet my expectations, I have no problem sending it back.  That said, I see no reason to settle for "bad copy" when a better copy can be had for the same price.  Thoughts?

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Joe

 Joe Moche's gear list:Joe Moche's gear list
Canon EOS 5D Mark II Fujifilm GFX 50R Fujifilm GFX 100S +6 more
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