F
Francesco
Guest
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'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'
- Apocalypse Now
Francesco Gallarotti
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'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'
- Apocalypse Now
Hi SJ,What is "USM in Photoshop"?
Your question deserves a more thorough answer than previous poster
gave. The Canon digital SLR cameras (and especially the 10D) don't
do much processing of the image inside the camera. Non-SLR
digitals apply a lot of digital sharpening (and other "touching up"
operations) before the image is even written to the memory card.
This makes the image look great right out of the camera.
The problem is that this automatic touch-up work actually throws
away image information that cannot be later recovered. Also, the
touch-up is really an artistic thing... and we all know that
computers are TERRIBLE at making artistic decisions. The
algorithms that sharpen the image inside the camera don't
understand what the real goal is or what the real scene looked
like; they just go about applying the sharpening no matter what.
So.... the Digital SLRs do very little processing inside the
camera. That means that the images you get off your 10D are a
little bit fuzzy and the colors are very vivid. 10D owners then
pull the images into Photoshop software on their Windows or
Macintosh computer to manually retouch the pictures. The human
photographer can conrol just how much sharpening (and other
adjustments) to make with a few slider controls on the screen. One
of the very most important adjustments controls the sharpness of
the image and is called "unsharp mask"; that is usually called
"USM" for short.
The 10D's lack of in-camera automatic sharpening often comes as a
big (and bad) surprise to new 10D owners. Pictures sometimes seem
bland right out of the camera. The trick, of course, is to use
Photoshop (or similar program) to adjust the iamge after it is
taken. This is a FAR superrior approach than the in-camera
automatic adjustments.
And why is that a good thing? Why I have to run up and down a place when I can just zoom? See the point is that if you talk about speed and colors I can agree with you, but compisition-wise I believe that the "common-say" that a prime teaches you a better lesson is not true.However, that
doesn't mean that you can't have excellent composition with a zoom;
it's just that using primes means you don't have the option of
quickly changing composition.
"An economy of means forces me to be more rigorous." -Henri
Cartier-Bresson
Abu Mumia
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'He's out there operating without any decent restraint, totally beyond
the pale of any acceptable human conduct.'
- Apocalypse Now
--Ok, I have found Unsharp-Mask
Sorry, should have looked first. I even had Photoshop open![]()
"An economy of means forces me to be more rigorous." -Henri
Cartier-Bresson
Abu Mumia
Admittedly, a Sigma 50-500EX or 120-300F2.8 on a 1D with a bracket on the tripod mounts begs you to ask where the Belt feed for the Ammo goes and you DO expect the barrel to spin around when you focus but toting a 500L or 600F4 IS is so reminiscing of warfare in the gulf also ;-) ..For sheer feel and romance, there's nothing like primes that you
keep, treasure, and learn to know and love.
Well that's about the silliest thing I've read. Why? If you know anything about perspective, zooming with your feet, changes the perspective. By standing in one place and using a zoom, it allows you to tighten the crop in your viewfinder, without changing your perspective. This is a good thing.dyslexia...
would you stretch that over and say that "prime-people" are more
similar to painters (who take time and lots of patience to get one
of their pictures done) while "zoom-ers" are more similar to
reporters, who just care about grabbing the instant?
I started out with primes and zooms. I've learned on 35mm and twin lens reflex film bodies as well as 4"X5" view cameras. Ain't nothing slower then a film plate and a view cameraI would agree to this point of view actually. This is why somehow I
believe that shooting with a prime gives you a larger "aura" of
professionality and makes you a better artist.
Wow, now there's an example of poetic licensePrimes are like a woodworker's knives, planes, and chisels. Zooms
are like power tools.
A lot of good that's gonna do me when I want to crop the image in my viewfinder and in order to get a closer shot, I have to change my perspective or do the zoom crop in the camera, throwing usable pixels away because I couldn't use a zoom.Each prime has a very subtle character, and they're simple enough
that with time and attention you can get to learn to know them
thoroughly
Well, here's the romantic fairytaleWhen wide-open, my 50/1.4 lightly kisses the subject. It gives
delicate detail a translucent quality. The field of focus pops out
like child's laughter at a funeral, with the rest fading into
misty-milky distance. As I stop down, the subject emerges like the
main theme out of a symphony; the background and foreground
coalesce out of the softness, taking up secondary melodies and
harmonies. At f/11, the lens plays like the Deutsche Oper in the
middle of the Ride of the Valkyries -- the scene sings in a chorus
of detail, almost intense enough to make the eyes burst.
Give me a brass section. I love "Big Bad Voodoo Daddy" I guess that'll get me kicked out of the clubMy Tokina 17 is a gypsy violinist.
Wow, I bet you're still running you're music through tubes because you like the distortion and how they clip the soundZooms? Like power drills. Sure, you'll be able to produce a picture
with them, just as well as with a prime, only more efficiently. But
they lack personality and character.
There are many other factors related to image quality: contrast, distortion characteristics, "speed" etc. But as you implied, it's mostly image quality that makes primes interesting.I understand that for the most part, primes are sharper than
zooms…. But aside from that, are there any advantages?
Bingo. It's called "metaphor," "idiom," and "hyperbole," if I recall correctly from my high school creative writing classes.Wow, now there's an example of poetic licensePrimes are like a woodworker's knives, planes, and chisels. Zooms
are like power tools.![]()
Not reasonING. Reason, yes. Isn't there an irrational, romantic aspect to photography for you? For me, there is. I think that for most people, there is. Some camera makers would be long out of business if there wasn't. That was what I was describing.Bad
example PetteriYou're using romantisim as a reasoning to use
primes.
Oh, I agree. I think there are very good reasons professionals tend to prefer zooms and most prime-o-philes are either dedicated amateurs or (wannabe or real) artists. The pro will lose income if he loses or muffs a shot or shoot. The amateur or artist can shoot whatever he likes, whenever he likes, however he likes. He can permit himself the luxury of not getting the shot, for whatever reason.There's a time and point for all lenses, zoom or prime. I can't
understand why using both is such a big deal. Zoom people use
both, prime people shun zooms. What! Prime people were dropped on
their head as a childMaybe it's the other way around
I
know I bounced a few times![]()
For me, that'll just mean a shot I didn't get. So what? There are others that I got, and still others that I have yet to get. It's the hits the count, not the misses. As a Finnish poet put it, "all of us have produced excrement, but it's the masterpieces we'll be remembered for."A lot of good that's gonna do me when I want to crop the image in
my viewfinder and in order to get a closer shot, I have to change
my perspective or do the zoom crop in the camera, throwing usable
pixels away because I couldn't use a zoom.
Sometimes romantic fairytales make appealing reading... and at best, they can be great art.The sigular and only reason to use a prime is because of image
quality or light speed/DOF. Everything else is nothing more then a
romantic fairytale.![]()
You like it?Well, here's the romantic fairytale![]()
Actually, I'm not much of a hi-fi'ist. If you're interested, I've got a 20 year-old NAD amp and discount Wharfedale Z2 some-special-edition speakers, and I play my CD's mostly through a $99 Chinese DVD-CD player. I prefer live music.Wow, I bet you're still running you're music through tubes because
you like the distortion and how they clip the soundOh and yes
I have a Golden Tube amp but I also have horns in my speakers![]()
I don't have a 135. We're not very compatible. ;-)Sorry, you went over the deep end with this oneNot trying to
flame you but you have to admit you were getting a bit gushy on
this one. Next I was expecting you to say that you had a hot
romantic date with your 135![]()