Megapixels
Oct 19, 2018 15:33:01 #
rcarol wrote:
WOW, and here I thought that it was my mother and father that had something to do with my creation. But that's a British trait, isn't it? Taking credit where none is due. And we spell color correctly.
Most of us can trace our ancestry back further than one generation. Why can't you?
Oct 19, 2018 16:37:23 #
Apaflo wrote:
The idea that one can "zoom with your feet&qu... (show quote)
Cropping always reduces resolution. You are throwing away bits of your film or sensor. It used to be
said that "good photographers frame, but only rarely crop."
It's true that only changing position can change perspective, and that perspective and framing are two different steps.
However, you can "zoom with your feet" -- as long as you walk directly towards the subject. Only the apparent size
of the subject changes. It's not the same perspective--strictly speaking--but in geometrical terms it's a "projection".
As everyone knows, closer is often better--and not just with a prime lens. Long focal lengths (whether zoom or prime)
have serveral (usually negative) effects on the image (shallow depth-of-field, dimness, extreme foreshortening). So, if
you can eliminate the need for a long lens by walking, it's usally worth the effort.
Unfortuantely, a lot of photographers believe in "walk by zooming". The convenience of zooms invites chaning focal
setting when one should be changing one's perspective. More photos have been ruined by not moving feet then by not
moving the zoom's focal length control.
Image quality can often be improved by replacing a zoom lens with the equivalent prime focus lens..
Zooms always reduce contrast appreciably (though you might not see it on an LCD display). And no zoom
can equal the resolution of the best prime lens, though whether or not the loss is visible depends on the zoom,
the focal length setting, and how you view the photo.
Moreover, the sharpest aperature of a zoom can change depending on the focal length setting. This
makes it hard to remember and hard to use (if you want the sharpest possible image).
Zoom abuse has had a big negative effect on photography, IMHO--not to mention all that money spent
on very expensive lenses that produce less-than-ideal image quality.
The zoom is one of those things -- like a smart phone -- that we think is a necessity but in fact is a decadent
luxury. It's a necessity only for sports photographers and some wildlife, and some event photographers.
Landacape photographer and portrait photographers can and should do without.
Optical engineers feel the same way about zoom lenses that winemarkers feel about Mogan David Extra Heavy
Melaga wine. It probably takes a lot of skill to make that stuff, but....
Oct 19, 2018 16:52:50 #
selmslie wrote:
Most of us can trace our ancestry back further than one generation. Why can't you?
I can, I just don't care about it. Have you found all of the thieves and scoundrels in your ancestry? Or are you still looking? I'm sure the list is endless.
Oct 19, 2018 17:19:25 #
Bipod wrote:
... you can "zoom with your feet" --
as long as you walk directly towards the subject. Only the apparent size of the subject changes.
It's not the same perspective--strictly speaking--but often it will make a better photo than a long shot
with a long focal length.
... It used to be
said that "good photographers frame, but only rarely crop."
as long as you walk directly towards the subject. Only the apparent size of the subject changes.
It's not the same perspective--strictly speaking--but often it will make a better photo than a long shot
with a long focal length.
... It used to be
said that "good photographers frame, but only rarely crop."
Perhaps you should more carefully investigate your statements. Both are invalid.
Oct 19, 2018 17:32:31 #
camerapapi wrote:
The majority of photographers will do very well with only 24 megapixels.
Papi, we were pretty happy with 12MP on a (REVOLUTIONARY) Full Frame DSLR just 10 years ago. And many pros made a good living making Brides & Moms (zillas and otherwise) happy with even lower resolution tools. But I'm enjoying the luxury of my 24MP camera and I couldn't agree more.
It is all about the component 18" behind the lens. And that part has infinite imagined resolution.
Keep being real,
C
Oct 20, 2018 07:04:13 #
Apaflo wrote:
Perhaps you should more carefully investigate your statements. Both are invalid.
Thank you, Delphic Oracle.
Care to explain? Or do you only pronounce judgement
from on high?
I'm willing to admit mistakes. But a direct and helpful
reply would be appreciated.
But what exactly is the point we are debating?
The expression "zoom with your feet" is an idiom,
not an axiom. It was used as such by another poster,
and he got it shoved own his throat.
I'm not with comfortable with that--but maybe you are
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