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Digital cameras: Image
Image
by deeppzz - 11/9/09 12:16 AMWhat is the difference between the image in 3M mode and the same image shot in 10M. Will there be any difference in the clarity?
Can i convert the images to the HD quality ?
Image size
by snapshot2
- 11/9/09 8:03 AM
In reply to: Image by deeppzz
A 3 megapixel photo and a 10 megapixel photo will look the same on your computer monitor.
They will look the same if you printed them at a size of 6 x 4 inches.
But, if you printed them at a larger size the 3 megapixel photo will look blocky, the 10 megapixel photo will look good.
More megapixels is good for printing large pictures.
More megapixels is not needed to display on a computer screen.
HD (high definition) is not anything special.
It is a video that has an image size of 1920 x 1080 pixels.
A HD video made from 3 or 10 megapixel photos will look the same (great).
I have made several HD slide show DVDs using a Blu-Ray burner and Blu-Ray media.
You only need a photo that is 1920 x 1080 or larger.
Of course you must play the DVD on a Blue-Ray DVD player and a HD television set to see them in true HD.
You can also make a slide show in wide-screen and produce a normal DVD.
When viewed on a HD television through one of the newer normal DVD players that "up-convert", will produce a picture that will be difficult to tell from a Blu-Ray DVD.
If you have a HD television set, I recommend that you get either a Blu-Ray DVD player or a normal DVD player that can "up-convert"
The up-converting DVD player produces a much better picture that the older normal DVD players.
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Convert
by deeppzz - 11/9/09 9:35 AM In reply to: Image size by snapshot2
I m currently using the Nikon Coolpix L100. Will i be able to upconvert the images to the HD quality? Will the image clarity look better than the one before?
If yes please provide me the appropriate the software tool to upconvert the image!!!!
Thank you!!!
Convert
by snapshot2 - 11/9/09 3:11 PM
In reply to: Convert by deeppzz
If you want to up-convert video to HD, you would have to convert the video 640x480 images to 1280x720 or 1920x1080.
The clarity would not look better than the original.
It would look worse.
The software would have to use interpolation to increase the size of the images. Interpolation means the software is having to guess at what pixels to add by using formulas. This always results in poor quality.
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You may get a better image from your present L100 video, if you used a newer set-top DVD player.
One that has up-conversion capability and connects to a HD television set with a HDMI cable.
You would have to create a DVD using your L100 video.
If you want to pursue this further I suggest you check out these links from a Google search for
upconvert standard video to HD
http://www.google.com/search?hl=en&source=hp&q=upconvert+standard+video+to+HD&btnG=Google+Search&aq=f&oq=&aqi=
Change - Yes
by snapshot2 - 11/10/09 7:49 AM
In reply to: Change? by deeppzz
If you find a program that will convert standard video into HD video, it WILL change what you see.
The new video images will be larger in physical size and file size; but will look worse than the original.
An old old expression.
You can't make a silk purse out of a sow's ear.
(sow is a female pig)
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Hey snapshot2
by kalel33 - 11/10/09 8:03 AM In reply to: Change - Yes by snapshot2
Deepz is actually asking about "upconverting" a 10MP photo to HD. They aren't grasping that a >1MP is more resolution than HD resolution.
Yep, you are right
by snapshot2 - 11/10/09 4:37 PM
In reply to: Hey snapshot2 by kalel33
HD is misunderstood by many and I have failed to get my point across.
HD is not a standard of excellence, just a matter of image size.
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Thanks
by deeppzz - 11/11/09 8:49 AM In reply to: Yep, you are right by snapshot2
Thank you guys very much!!
Actually, HD is about 2 megapixels.
by Desperado JC - 11/11/09 9:07 PM In reply to: Hey snapshot2 by kalel331920 x 1080 pixels.
Depends on the HD
by kalel33 - 11/12/09 10:07 AM In reply to: Actually, HD is about 2 megapixels. by Desperado JCYou're showing 1080P/i resolution, which is 2MP, but 1080 is not the most used HD resolution. 720P is the most used resolution for media, which is less than a megapixel. So, you're right and wrong, but the a 1MP image is HD.
720 is not full HD.
by Desperado JC - 11/12/09 12:36 PM In reply to: Depends on the HD by kalel33Full HD, by definition, is 1920 x 1080. That's what the HD standard says. It is no wonder that folks are so confused about what HD really is. Bad information is introduced in marketing and passed around by folks who are not completely informed.
Perhaps you know which is used the "most". I certainly do not, and I find that a rather strange way of defining your terms especially when HD is defined by international standards organizations.
One thing is certainly true. The statement that "anything over 1 megapixel" is not HD is wrong.
Ugh
by kalel33 - 11/12/09 3:39 PM In reply to: 720 is not full HD. by Desperado JCMarketing is what has gotten you in trouble. There is no "Full HD" that is ratified or standardized by any organization. It was started by Sony to separate their products from others. They allowed the "Full HD" moniker to be used by others to help push their products, such as their 1080 camcorders and blu-ray. Here's some reading for you.
How Sony marketed 1080, wasn't even 1080p for all their products.
http://www.jakeludington.com/life/2007/what-is-full-hd-1080/
By the way, I'll give you the way to figure up megapixels by using math. Horizontal resolution x vertical resolution and this gives you how many millions of pixels there are. A megapixel is one million pixels. So if we take 720p linear resolution(which is HD) and use the equation, we find that 1280x720= 921,600, which would equal.9MP. So .9MP is less than 1MP. This means that your statement:
"One thing is certainly true. The statement that "anything over 1 megapixel" is not HD is wrong."
Your statement is completely wrong and mine is correct. If you're going to refute my claims then have links to back it up. I don't like having to go back and look up links again to show someone, who is ignorant on the subject, that they're wrong.
To add
by kalel33 - 11/12/09 3:42 PM In reply to: Ugh by kalel33"One thing is certainly true. The statement that "anything over 1 megapixel" is not HD is wrong."
I reread your statement and you actually wrote it down wrong. I said that anything over 1MP IS HD. You state me as saying anything over 1MP is NOT HD. But I knew what you were trying to say.
I wasn't going to reply again, but it seems that you
by Desperado JC - 11/12/09 4:31 PM In reply to: To add by kalel33are incapable of admitting a simple error.
So you said that anything over 1 MP is HD? I guess that means that 12 megapixels is HD then. Other than some very specialized high end cameras, there are no video cameras that produce anything higher than 1920 x 1080 which, if you want to be exact, is 2,073,600 pixels.
As far as quoting you, here is what you wrote. "They aren't grasping that a >1MP is more resolution than HD resolution." Now, I don't know how you interpret your statement, but it certainly looks to me like you said that anything above 1 megapixel exceeds HD resolution. Since I just calculated HD resolution for you as 2,073,600 pixels, you should now be able to see that your answer is wrong.
As far as standards are concerned, here are some excerpts from Wickipedia;
"An aspect ratio of 16:9 was duly agreed at the first meeting of the WP at the BBC's R & D establishment in Kingswood Warren. The resulting ITU-R Recommendation ITU-R BT.709-2 ("Rec. 709") includes the 16:9 aspect ratio, a specified colorimetry, and the scan modes 1080i (1,080 actively-interlaced lines of resolution) and 1080p (1,080 progressively-scanned lines). The current Freeview HD trials use MBAFF, which contains both progressive and interlaced content in the same encoding.
It also includes the alternative 1440×1152 HDMAC scan format. (According to some reports, a mooted 750 line (720p) format (720 progressively-scanned lines) was viewed by some at the ITU as an enhanced television format rather than a true HDTV format,[8] and so was not included, although 1920×1080i and 1280×720p systems for a range of frame and field rates were defined by several US SMPTE standards.)
...
1920×1080 -- 2,073,600 -- Standard HDTV resolution, used by Full HD and HD ready 1080p TV displays such as high-end LCD, Plasma and rear projection TVs, and a typical PC resolution (lower than WUXGA); also used for 1125-line video, as defined in SMPTE 274M, ATSC A/53, ITU-R BT.709;"
If that doesn't do it for you, I guess nothing will.
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