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Sharp, nice bokeh -- great lens!

Started Dec 27, 2019 | User reviews thread
MayaTlab0 Senior Member • Posts: 2,985
Re: Sharp, nice bokeh -- great lens!

J A C S wrote:

medon78 wrote:

J A C S wrote:

Here is a curve derived from one of you RAW files:

It goes to -2.1 or -2.2 in the extreme corners.

OK! Thank you very much. So... no -3EV or more as the Optical Limits guys sampled. Then there must be either something wrong with my uncalibrated ceiling ;)... hmmm.

I do not think that you can make the vignetting weaker by doing a bad test, this is very hard. On the other hand, a poor test can easily make it look stronger, if the light is more directional than one would think. Taking a shot of a wall pained with a glossy paint is an example. This is especially tricky with wide lenses.

Are there methodologies that can eliminate focusing distance or colour profiles as a variable when expressing vignetting in EV ? Differences between various websites' results in EV may just come from that, no ?

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