bobn2

Quite expensive if you want mirrorless. Suddenly, surprisingly economical, if you don't. The Nikon and Canon mirrorless options look good, because they both give access to a lot of DSLR lenses ...

I think that what you have written is entirely right, and confirms what you suspected, that you have nothing to gain from the conversation going on here. I would think maybe that you need to be the ...

What you said was 'this doesn't mean that f-number doesn't describe aperture in photographic terms'. So, I took that to mean that you were suggesting that f-number completely described aperture ...

That's why we don't talk about an aperture of '2'. We can talk about an f-number of '2', but that's an f-number, not an aperture. But 'focal lengths' is not a 'unit' unless you know what the focal ...

Although 'relative aperture' and 'f-number' are actually different things, though related. The relative aperture is the reciprocal of the f-number. In the German way of doing things it's expressed ...

That depends on which 'photographic terms' you are talking about.

In the end, it's not really about terminology, it's about recognising that f-number isn't aperture. Call them what you like. The way to avoid the confusion is never to use the word 'aperture' on ...

There's also a confusion in what you're responding to between 'units' and 'physical quantity'. The units used for aperture are generally millimetres, but could be inches (common for American ...

The maximum aperture is not quoted as an f-number. The f-number in that example is '4.5', the aperture is 'f/4.5' which means 'the focal length divided by 4.5', which indeed provides the aperture, ...

You've said nothing specific about why we shouldn't compare the Z6 with the E-M1II. All you've said is that we shouldn't, with some rhetoric about GoPros and D5s. Why shouldn't we compare them? ...

In most cases at low ISOs the output (JPEG) black level is way above the noise floor, so the low end of the output DR is set by the processing, not the sensor. It does become relevant when you ...

Words take on specialist meanings in particular fields. For instance, if you look at the dictionary definition of 'power' it covers very many things, in Physics it has a very specific meaning and ...

And by the same token, a raw file cannot be 'more orange'. The orangeness, or any other colour characteristic depends on how you process it, and on he profiles that your raw developer is using.

The cameras I use most are a GX80 and a D810. The AF on the D810 in usability and results is simply streets ahead of the GX80. It's not so much that the GX80 doesn't focus fast enough or ...

That's not quite true. The Canon sensors were deficient with respect to low ISO DR (and still are to a lesser extent), but they were and are very good in other respects. Low ISO DR is not of major ...

The relative aperture is the reciprocal of the f-number. You see it on the front of lenses, expressed as a ratio, 1:2.8. The value of the relative aperture there is 0.36. No-one much uses it. Yes, ...

The problem that the Nikon mirrorless have is their AF systems get naturally compared with absolutely the best AF system there is, the one in the top end Nikon DSLRs. So, reviewers note that the ...

So, the real question for the success of this E-M1 X is are there enough people like you around. If the AF on the E-M1 X is as good as the D500's, then Olympus will have done very well indeed.

Most photographers say 'aperture' instead of 'f-number'. What you say is not so important, it's not actually knowing the difference (I'm sure you did) that leads to many confusions. Yes, arithmetic ...

Not the top end Nikon and Canon systems, they can do f/8. Only on a Canon, which has f/2.8 focus points, and 'better' means more accurate. The real reason is that the people who buy the long lenses ...