at what point does it make sense to stop obsessing over gear minutia ?

Started 2 months ago | Discussions thread
Lee Jay Forum Pro • Posts: 54,696
Re: When you are satisfied with what you have

mamallama wrote:

Lee Jay wrote:

D Cox wrote:

Lee Jay wrote:

Gerry Winterbourne wrote:

TRIODEROB wrote:

in other words how far down the rabbit hole should you chase small improvements in gear.

will it translate to much better images if you get a lens which score 7% more on a optical test ?

I can't think of any meaningful optical test that can give scores in percentage points;

Since MTF is a number from 0 to 1, you can think of it as a percentage if you like.

It isn't a single number, it's a function -- that is, a set of numbers that you can plot on a graph.

Of course, I know that. In fact, it's a complex function and what we call MTF is just the absolute value.

https://en.wikipedia.org/wiki/Optical_transfer_function

But sometimes people say MTF50 (or MTF9 for Rayleigh, for example), for 50%, and they mean at the center at a particular f-stop or diffraction limited.

So now MTF is not a number from 0 to 1. What changed?

Read the above that you quoted and do so with your brain turned on this time.

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Lee Jay

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