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<blockquote data-quote="WayneF" data-source="post: 175335" data-attributes="member: 12496">And the P, M, S, and A modes are really only a convenience.&nbsp; A mode is the mode that gives the aperture choices the priority.&nbsp; Or S mode gives the shutter speeds choices the priority.&nbsp; (for when you want the properties these specific choices offer). P&nbsp; mode lets the automation pick both - sometimes a helpful choice, but sometimes a dumb choice, since computers have no clue what the scene actually is, or how it ought to look.&nbsp; The human has no choice then, unless they step in with override.Any automation mode only sees a &quot;blob of light&quot;, which it can measure, and then it always tries to make it come out middle tone, not too dark, not too bright.&nbsp; That may or may not be the right answer (black cat in coal mine, white polar bear on the snow). The automation does NOT know the difference, so sometimes override is necessary.&nbsp;&nbsp; M mode lets you set both aperture and shutter speed (lets you override automation, for full control).&nbsp; If you are only going to use M mode by always &quot;zeroing the meter&quot;, you might as well use A or S mode. They do that too, faster.But it is the photographer that has to learn when and why they want what.</blockquote>

[QUOTE="WayneF, post: 175335, member: 12496"] And the P, M, S, and A modes are really only a convenience. A mode is the mode that gives the aperture choices the priority. Or S mode gives the shutter speeds choices the priority. (for when you want the properties these specific choices offer). P mode lets the automation pick both - sometimes a helpful choice, but sometimes a dumb choice, since computers have no clue what the scene actually is, or how it ought to look. The human has no choice then, unless they step in with override. Any automation mode only sees a "blob of light", which it can measure, and then it always tries to make it come out middle tone, not too dark, not too bright. That may or may not be the right answer (black cat in coal mine, white polar bear on the snow). The automation does NOT know the difference, so sometimes override is necessary. M mode lets you set both aperture and shutter speed (lets you override automation, for full control). If you are only going to use M mode by always "zeroing the meter", you might as well use A or S mode. They do that too, faster. But it is the photographer that has to learn when and why they want what. [/QUOTE]

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