Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Quote:
I love the concept though. If that above was your goal, then yea. Louis L'Amour, “To make democracy work, we must be a nation of participants, not simply observers. One who does not vote has no right to complain.” Visit our archived Minecraft world! | Maybe someday I'll proof read, until then deal with it. Last edited by turtle : 2006-11-10 at 14:56. |
|
quote |
Member
Join Date: May 2004
|
Quote:
Or has your D70 been IR-modified? |
|
quote |
Veteran Member
Join Date: May 2005
Location: Paris, France
|
Moogs, resolution is the accepted term for what Powerdoc was talking about. The fact that the same term is used as shorthand for pixel count in the computer world is merely confusing, especially with Bayer sensors. In fact, you've fallen victim to the "marketing hype" you so detest!
![]() Quote:
Let me try to explain this with a simple diagram. Imagine a line of "pixels" on a Bayer sensor as follows: R G B R G B R G B 1 2 3 4 5 6 7 8 9 (reference numbers used below) The G "pixels" record only the green component of light falling on them (R = red, B = blue). Now let's imagine we're trying to record a purely green subject (e.g. a tree) against a perfectly white background (the sky). If the vertical green/white edge falls on the border of "pixels" number 5 and 6 (i.e. green light falls on "pixels" 1-5 and white light falls on "pixels" 6-9), one might expect the Bayer sensor to then record 1-5 as green and 6-9 as white. In reality however, the Bayer sensor has no way of knowing that 5 is green: the camera can only estimate that it might be green because 2 is reporting green and 1, 3 and 4 are all reporting a value of zero, while 7, 8 and 9 are reporting equal values and therefore might be white. Therefore the Bayer sensor can make no distinction between the vertical green/white line falling between 5 and 6, or between 6 and 7, or between 7 and 8. It can only make a distinction between it falling between 5 and 6, and falling between 8 and 9. So even though you would say my diagram has 9 pixels of resolution, the actual resolution for green against white objects is only one-third of that: i.e. 3 pixels. A real Bayer sensor interpolates both vertically and horizontally, with a more complex RGB pattern, and so does a better job than my hypothetical example above. But the real resolution (in pixel count terms) is still less than half what the pixel count would suggest. And the anti-aliasing filter further reduces this resolution. By contrast, here's how a Foveon sensor would look like. Each photosite ("pixel") can record the complete colour of the light falling on it: R G B R G B R G B B R G B R G B R G G B R G B R G B R 1 2 3 4 5 6 7 8 9 Therefore regardless of where the green/white edge of our tree falls, the Foveon sensor will be able to record with 100% accuracy the exact edge of the tree (to the limit of the pixel count, of course). The true resolution is therefore equal to the pixel count, i.e. 9 pixels. Yet another shorthand way to explain this is to consider the 8 MP Bayer sensor image to be a ~4 MP Foveon image that has already been enlarged (i.e. interpolated) in Photoshop by a spatial factor of the square root of 2 (i.e. 2x the pixel count). The only case where a Bayer sensor actually delivers something close to the resolution its pixel count suggests is with a completely monochromatic subject, e.g. a test pattern of black lines on a white background. In all other cases - the real world, in other words - the resolution of the Bayer sensor is much lower than its pixel count. By the way, there is nothing subjective about all of this. ![]() PS. Sorry for contributing to turning your thread into a geekfest, Windswept! … engrossed in such factional acts as dreaming different dreams. |
|
quote |
Hates the Infotainment
Join Date: May 2004
Location: NSA Archives
|
Dead linkage for me, but your site looks pretty good Steve. Those are some good looking college (?) girls you've got on your roster. I can imagine what a horror it must be having them remove some or all of their clothes so you can photograph them.
![]() Dorian: great post. Informative and useful. And I do understand the concept of bayer pattern sensors vs. how a Foveon records light. I was more talking about the end result. In all this, the camera's processing capabilities, the camera's meter, and a host of other factors contribute to the end result. If all there was, was the difference between how the two systems record light, I dare say no photographer would be without a Sigma camera. ![]() Likewise, this is how some cameras from the same company, end up with better color and noise performance than other cameras using the same lens and subject. Anyway, the theory matters not but rather the end result, which is why so many people swear by the S3 even though it is slow and "low" MP count. There's something special about the way it captures golden light in particular. I've seen some shots from an S3, on a misty golden morning that look ... different than all the rest. Not necessarily more or less detailed, just more life-like. The S4 suffers from a similar problem as the SD-14, the MP count hasn't changed, but rather the processing speed and I'm sure the noise algorithms. And the bottom line for all of us, no matter which platform we use / tout, is that a)everything still follows the light. bad light = bad picture b)MP for MP sake is useless if you have no print-based need for them. My boss ponders the idea of going from a 22MP MF back to a 39MP back, and I'm like "For God's sake why?" Other than more efficient shooting because of the use of CF cards, and a larger preview, it would gain us nothing. If you don't shoot for billboards, who cares, once you get beyond about 12 or 14 MP. All you're really doing is giving yourself more room to crop and still make a large print. ![]() ...into the light of a dark black night. Last edited by Moogs : 2006-11-10 at 15:44. |
quote |
Veteran Member
Join Date: May 2005
Location: Paris, France
|
Quote:
Window light. Backlight. Multiple lights. Reading light. Harsh light. Street light. Bar light. Sunlight. (In trouble after Queenside castling, as is usually the case. ![]() Overcast light. (Colour photo. Cloudy days are perfect for getting rich, saturated colours, which surprises many novice photographers.) Crap light. Good moment though! Crap light. Good subject though! (All photos from The Family of Man 2.) … engrossed in such factional acts as dreaming different dreams. |
|
quote |
Hates the Infotainment
Join Date: May 2004
Location: NSA Archives
|
Those are some great photos though the last one is fekkin scary I must say.
|
quote |
www.stevegongphoto.com
|
Quote:
http://gong.smugmug.com/gallery/2117384 Oh, and the image link does seem dead. Here it is again: ![]() |
|
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Hey Steve, if you right click on the image placeholder and open in another window it works. The you'll be able to see the image.
|
quote |
Hates the Infotainment
Join Date: May 2004
Location: NSA Archives
|
You see this is why I don't photograph young scantily clad women, because if I did I wouldn't be able to maintain a stable marriage.
![]() |
quote |
www.stevegongphoto.com
|
![]() Took this one yesterday at the hospital. |
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Well that image says a lot about the person sitting there. Nice catch!
|
quote |
Student extraordinaire
Join Date: May 2004
Location: Canberra, Australia
|
|
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
I thought I would add a photo to this thread. I took this one last (almost) full moon here, I was a day late.
![]() ![]() f/14, 1/25, 0ev I will say, you can't tell the difference between the original color and B&W, but I liked the detail I managed to get with this shot. Louis L'Amour, “To make democracy work, we must be a nation of participants, not simply observers. One who does not vote has no right to complain.” Visit our archived Minecraft world! | Maybe someday I'll proof read, until then deal with it. |
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Quote:
![]() |
|
quote |
Cat's Dreamlands
Join Date: May 2004
|
Here is one of my attempt :
![]() |
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Ok, I just noticed how blurry my image is compared to these two and I must not have chosen my best.
*runs to Aperture to find a better version* |
quote |
Cat's Dreamlands
Join Date: May 2004
|
Take one shot of the moon, and you will have it all (except for the crescents and the eclipses)
I wonder, how someone can claim any copyright on a moon shot ? ![]() |
quote |
www.stevegongphoto.com
|
And here's the same picture but in colour.
http://gong.smugmug.com/gallery/1871...12621296/Large I prefer colour, what do you guys think? Last edited by stevegong : 2006-12-02 at 11:56. |
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Quote:
*hot linking doesn't work well for you though, I can see the image when I right-click and open the image in a new tab. Louis L'Amour, “To make democracy work, we must be a nation of participants, not simply observers. One who does not vote has no right to complain.” Visit our archived Minecraft world! | Maybe someday I'll proof read, until then deal with it. |
|
quote |
www.stevegongphoto.com
|
Fixed Link. The pictures seem to not work only in Safari.
![]() |
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
Did you know the girl standing there? Where did you set the camera? Please do tell because I really like that picture.
|
quote |
www.stevegongphoto.com
|
if you look at the exif, the exposure is 1 second. I didn't have a tripod so I tried to set it on a railing. I had to shoot a few pictures since for some of them she was in fact moving. Sometimes you get lucky, sometimes you don't.
|
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
I did look at the exif, that's why I had to ask. I knew it couldn't have been handheld. Great timing for you, great shot!
|
quote |
Cat's Dreamlands
Join Date: May 2004
|
Steady during one second, with only the help of a rail : good shot. The number of false attempt do no count in photo
|
quote |
9" monochrome
Join Date: May 2004
Location: 🇦🇺
|
Great shot - Powerdoc is right too. Once you get the shot, the number you took beforehand don't matter.
|
quote |
careful with axes
Join Date: May 2004
Location: Hillsborough, CA
|
|
quote |
www.stevegongphoto.com
|
Quote:
Photojournalists who just document events, such as a pic of bush at the whitehouse most often do not aim for creativity. They need to get that pic of bush for the press or whatever. If they had to take that scene, they'd just set a fast shutter speed. National Geographic photographers whom have a lot of freedom in what they shoot are however encouraged to experiment and bring out their own personal styles. so I don't quite understand the point of your post. |
|
quote |
Lord of the Rant.
Formerly turtle2472 Join Date: Mar 2005
Location: Upstate South Carolina
|
IMHO, the only truth to this is when it's a matter of pride that "only one shot was needed". PJs need only cature a moment to show the story in an image. This is best achieved by shooting a chain starting before the image was needed and ending after that image. I.e. when a boy is about to be announced the victor and you want his expression.
Louis L'Amour, “To make democracy work, we must be a nation of participants, not simply observers. One who does not vote has no right to complain.” Visit our archived Minecraft world! | Maybe someday I'll proof read, until then deal with it. |
quote |
careful with axes
Join Date: May 2004
Location: Hillsborough, CA
|
Quote:
|
|
quote |
Posting Rules | Navigation |
Page 4 of 12 Previous 1 2 3 [4] 5 6 7 8 Next Last |
Thread Tools | |
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
mac book White upgraded vs.Black Mac Book | LightYourVision | Purchasing Advice | 13 | 2006-05-22 12:58 |
Why does iPod video sell better in white, while Nano sells better in black? | Doxxic | Apple Products | 8 | 2005-12-17 11:45 |
iPod nano: black or white? | Messiahtosh | Apple Products | 68 | 2005-09-25 10:12 |
Hate white text on black backgrounds for websites? | BarracksSi | Genius Bar | 17 | 2005-01-17 22:09 |
A return to black in '05? | Satchmo | Speculation and Rumors | 81 | 2004-12-19 23:56 |