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Sharpest 40-45mm landscape lens

Started Apr 7, 2015 | Discussions thread
OP Betarover Senior Member • Posts: 1,049
Re: OOPS! You are right.

The observations made from these charts may be dependent on slrgear's testing methods. Some of these results are at the finest resolutions of their tests, i.e. what they call a single 'blur unit'. For all we know the prime could be 0.1 of a blur unit and the zoom might be closer to 1.5, and this might actually be observable in photos.

A very interesting comment.  I wonder what they would consider is enough sharpness?  What number on their scale can actually be seen in a large print hanging on a wall when viewed at a normal viewing distance?  It might be 1, under 1, or it might be 2 or 3.

One of my disappointments with dpreview and other sites is that they never say how much sharpness is enough, or how many pixels are enough.  This of course depends on what our products are, and the most demanding product of all is large prints hanging on a wall.

However, at this level it's entirely possible for sample variations within one model to be more significant than differences between models. So if you do get a 45, you need to make sure it's from someone who takes returns/replacements on sharpness.

I agree, but only if making large prints is the product.

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