Forgive my ignorance, but how will you meter the sky and distant ground?
Probably with a very narrow-angle spot meter.
can someone please elaborate how exactly you would meter using a lightmeter for a landscape, i.e. similar to the peak district setting the OP is referring to? Would it not provide a similar result to an evaluative reading from the camera?
Yes, it probably would.
Two things about using a hand meter.
One, if you are shooting film with no possiblility to preview the result before processing, then you need all the help you can get. With a hand meter it is very easy to take an incident reading (using the invercone) which is very good for slide film. You can do the same with the camera's meter (with an invercone-type attachment, or 18% grey card) but it's not as easy.
Plus, if you are shooting black and white negative film and following the Zone System method, then a very narrow-angle spot meter is pretty much essential. The camera's so-called spot facility is really no substitute - too wide. The Zone System is a two-stage operation and really requires individual images to be processed one at a time, obviously something you can't do with a roll of multiple images, but adjusting the exposure very particularly gets you at least half way there.
Two, it is important to distingush between the measurement itself and the process of taking it. That is an operational thing and is at least partly personal preference. Some people just like to use a hand meter for various good reasons, even if you can do the same thing in other ways.
However, digital is very different to film, most obviously because you can see the actual exposure the instant it's taken, on the LCD. No guesswork involved there, which is all any exposure meter is doing - guessing, and working on the basis of a number of assumptions and variables that might apply. Plus you have a histogram (that Ansel Adams would have given a limb for) and that wonderful device known as blinkies - the highlight over exposure warning that flashes on the LCD.
With film you have none of these luxuries, plus it's also relevant to note that - if you want to be accurate and optimise the exposure as best you can - then film and digital need different treatment and often a completely opposite way of shifting the exposure level.
There is no guesswork with the digital LCD image. It is subject to the JPEG parameters that you have preset in Picture Styles, white balance, noise reduction etc, but you (should) know all about the implications of those, not that there's much to worry about, because you selected them, or de-selected them as the case may be.
On the operational differences between the various options, a relatively new one with recent cameras is live view, including a live histogram and exposure settings displayed. Seems perfect for landscaping on a tripod. No need to touch the camera, just look at it
