Hi JustUs7.
Thank you for your considered and constructive reply. I have no wish to make this a conflict so I will reply in likewise fashion.
I thought my question was quite specific. I’d like to understand Canon's system of naming cameras and lenses.
There are EOS R, EOS M, EOS RP, and EOS Ra, just at a quick glance among the mirrorless ones. (I know what EOS means), followed by a single or double digit number. The number seems a quite straightforward sequential increment except when it jumps to, eg, the EOS R50
Likewise there are EF lenses, EF-S, RF, RF-S, EF-M and L-series.
I am not asking anyone to tell me the differences between these cameras or lenses as I can obviously look that up myself, but I cannot find an explanation of the nomenclature. Unfortunately, Canon have adopted the modern marketing technique of telling you what you can
use a product for instead of (when I was a lad), telling you
what the product does (or is). Since the applications of cameras and lenses overlap to a very large degree, there are few clues to the nomenclature's rationale in the marketing copy, (I'd rather not spend hours trying to compare and analyse the narratives). I was hoping someone could point me towards something like the following example that Wikipedia offer on Mercedes nomenclature...
Until 1994, Mercedes-Benz utilized an alphanumeric system for categorizing their vehicles, consisting of a number sequence approximately equal to the engine's displacement in liters multiplied by 100, followed by an arrangement of alphabetical suffixes, indicating body style and engine type.
- "C" indicates a coupe or cabriolet body style (for example, the CL and CLK models, though the C-Class is an exception, since it is also available as a sedan or station wagon).
- "D" indicates the vehicle is equipped with a diesel engine.
- "E" (for "Einspritzung") indicates the vehicle's engine is equipped with petrol fuel injection. Also used for electric models and plug-in hybrids.
- "G" was originally used for the Geländewagen off-road vehicle, but is now applied to Mercedes SUVs in general (G, GLA, GLC, GLE, GLK, and GLS).
- "K" was used in the 1930s, indicating a supercharger ("Kompressor") equipped engine. Three exceptions : the SLK, SSK and CLK, where K indicates "Kurz" (short-wheelbase) (though the SLK[66] and SSK had a supercharger).
- "L" indicates "Leicht" (lightweight) for sporting models and "Lang" (long-wheelbase) for sedan models.
- "R" indicates "Rennen" (racing), used for racing cars (for example, the 300SLR).
- "S" Sonderklasse "Special class" for flagship models, including the S-Class, and SL-Class, SLR McLaren, and SLS sports cars.
- "T" indicates "Touring" and an estate (or station wagon) body style.
Thank you to anyone who can provide this info.