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Archive 2013 · “Full Frame Equivalence” and Why It Doesn’t Matter
  
 
theSuede
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p.8 #1 · “Full Frame Equivalence” and Why It Doesn’t Matter


Indeed. Which is why one should not lead them down into a dark no-exit alley of "lies for children" to explain stuff they don't need to know.

I like the way Access gave words to the concept
Access wrote:
.../snip/...
With neophytes one needs to focus on functional or applied knowledge, when it comes to aperture, it's best to teach it as a range or a relative value, not the precise numerical value or exactly what the signifies in physical terms (as we could spend days debating that very topic). I teach aperture as an applied concept, that working that range from wide open, to one to two stops down, to stopped down farther and so on; generally when you want to use each range.


If explaining to someone only interested in effect, not cause - use relative measurements, not absolutes.

1-You want shorter DoF, lower ISO or shorter shutter speed?
---Use a larger aperture (lower aperture value).

2-You want a more narrow field of view?
---Use a longer focal length.

3-Still not satisfied with what you get?
---See if you can find a tool within your budget that will satisfy your "need".

Unfortunately saying stuff like "F1.8 is always F1.8" does not in any way help in any of those Q/A's. If anything it makes things harder, by requiring at least two levels MORE of knowledge to make something practically usable out of that self-evident statement. By saying that "F1.8 is always F1.8" you're basically answering a question with a two levels harder question.

And in both Question One and Three, the statement is actually totally misleading. But to know enough to know THAT, you have passed the level where the initial question is meaningful - a long time ago.



Feb 05, 2013 at 01:00 AM
CalW
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p.8 #2 · “Full Frame Equivalence” and Why It Doesn’t Matter


Joakim, I have taught enough photography classes to know that you are absolutely correct. One has to remember that when dealing with someone who has only used a P&S in auto mode, the concept of "DOF" is itself new and frightening! This and the concept of "Exposure" are best approached in relative terms, followed by extensive "lab work" (AKA hands on experimentation and experience.) It may have been too expensive to do with film, but the digital delete button is very cost effective!


Feb 05, 2013 at 01:13 AM
philip_pj
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p.8 #3 · “Full Frame Equivalence” and Why It Doesn’t Matter


The better EVF cameras are great for showing non-technical photographers what happens with DoF, illumination, varying focal distances, bokeh, WB, B&W, colour adjustments, perspective - with a lens that can be operated manually...especially if it's a good low noise sensor feed with EVF tools that can be shown readily to the user.

Show don't tell. *See* what happens to the image when you use f8 instead of f2 (turns aperture ring)...*See* that more of the subject is in focus, and is less blurry...*See* what happens with a warmer WB (use control)...*See* how a B&W can look...etc, etc. for contrast, exposure, colour intensity, ISO noise effects..see how the histogram has more in the middle...instant review shows the effects of slow shutter speeds..you can cover it all in much less time with no need for a monitor, except the one built into the camera, that is..




Feb 05, 2013 at 02:21 AM
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