Q. I am scaning some old photos to be used in a DVD slideshow. The slideshow will be playing on an HDTv. What DPI setting should I use on the scanner to ensure that the pics are clear, on a 55" tv.
A. it depends on the size of the photographs.
the maximum resolution offered on HDTV's currently is 1920x1080.
a 55" HDTV would have an aspect ratio of 16:9 usually
16^2+9^2= 18.35^2
55/18.35 = 2.99
so your tv width is ~48"
and your tv height is about ~27"
so horizontally you have 1920/48 = ~40 pixels an inch
you have the same number vertically
so you have about 40 pixels an inch.
use that to proportion the dpi in your scan, depending on the size of your photo. theoretically if a picture is half the size of another picture, but has the same amount of detail, you'll need to set your scanners dpi twice as high to capture that detail.
unfortunately, there's no easy answer, because pictures aren't usually taken in 16:9 aspect ratio, so if you want your picture to fit the whole screen, some cropping will be required anyway. there's too many things that you might want to do with your pictures after you scan to give you an easy answer. but hopefully, the equations i posted above should help.
if memory usage and scan time isn't an issue, then by all means, the higher the better. though i can't imagine needing to go to any ridiculously high number.
theoretically, if you had a 16"x9" picture, then if my logic is right, you'd want 120 dpi.
for an 8"x4.5", you'd want 240dpi.
but this is all assuming that these are extremely high dpi photos, I can't imagine an average photo going beyond 250dpi anyway. i think the average photo is 72dpi or 96dpi.
so no matter how high you set your scanners dpi, it'll just get a really good scan of something inherently low quality.
the maximum resolution offered on HDTV's currently is 1920x1080.
a 55" HDTV would have an aspect ratio of 16:9 usually
16^2+9^2= 18.35^2
55/18.35 = 2.99
so your tv width is ~48"
and your tv height is about ~27"
so horizontally you have 1920/48 = ~40 pixels an inch
you have the same number vertically
so you have about 40 pixels an inch.
use that to proportion the dpi in your scan, depending on the size of your photo. theoretically if a picture is half the size of another picture, but has the same amount of detail, you'll need to set your scanners dpi twice as high to capture that detail.
unfortunately, there's no easy answer, because pictures aren't usually taken in 16:9 aspect ratio, so if you want your picture to fit the whole screen, some cropping will be required anyway. there's too many things that you might want to do with your pictures after you scan to give you an easy answer. but hopefully, the equations i posted above should help.
if memory usage and scan time isn't an issue, then by all means, the higher the better. though i can't imagine needing to go to any ridiculously high number.
theoretically, if you had a 16"x9" picture, then if my logic is right, you'd want 120 dpi.
for an 8"x4.5", you'd want 240dpi.
but this is all assuming that these are extremely high dpi photos, I can't imagine an average photo going beyond 250dpi anyway. i think the average photo is 72dpi or 96dpi.
so no matter how high you set your scanners dpi, it'll just get a really good scan of something inherently low quality.
I have a Sony Wega 55 inch hdtv?
Q. Last night I noticed red and green lines along the top of the screen, since there is nothing on top of the tv could someone give me some info what might be the cause of this? P.S. I've only had it for about 5 months.
A. It sounds as if you are seeing the VITS signals. All TV have these, but it's supposed to be above the viewing surface. Those are bits of information that the TV uses for color correct, closed captioning, TV guide info, etc. There is nothing to worry about, all you need is to have a technician drop by and stretch the picture until these are no longer visible. You might find it is only on one or two channels, and that is actually those channels fault. If it's on all chanells, then stretching it out will correct it.
TV's-Is it dumb not to go out RIGHT NOW and buy a 55" HDTV for $1099?
Q. If we have the money, which we do.
It is a Hitachi UltraVision 55" Rear-Projection LCD HDTV and the reviews seem good plus 0% financing til 2010.
Am I an idiot for not getting this TV since we want an HDTV?
It is a Hitachi UltraVision 55" Rear-Projection LCD HDTV and the reviews seem good plus 0% financing til 2010.
Am I an idiot for not getting this TV since we want an HDTV?
A. I'm a big Hitachi fan and own one myself, a 51 inch CRT RPTV. I looked at the LCD set myself, but upon extensive research went the 'Old School' route with the CRT for a multitude of reasons, the first being rather poor reviews on the picture quality of the LCD.
It was this which got me to thinking as the ONLY benefit of LCD over a CRT based set is it's ability to be hung on a wall. But when you take that LCD and house it in a RPTV you give up it's only advatage, that being space saving.
Now when you look at it terms of picture quality there's simply no comparison as CRT is still the recognized 'King of the Hill' by most experts in the field, it's true balcks, natural color representation and overall realistic diplay far and above that offered by either Plasma or LCD.
OK, so it doesn't seem as sexy right? How can this 'Old Tech' stand up to the latest and greatest? Well, both Sony and Mitsubishi have ceased any and all R+D in the field of Plasma and will no longer produce sets utilizing this technology. Hmmm, must be a reason don't you think?
And let's examine the hidden cost of LCD, be it flat panal or RPTV as well as DLP. These require what is known as an Arc Lamp to provide the backlighting for a picture to be seen and the do an admorable job of this...for about two years! Then, as your picture dims you consult your manual which will tell you a bulb change is in order. "OK, no problem" you say to yourself as you dial up the local repair shop, only to have your jaw drop when you find the replacement will set you back anywhere from $200-$300 smackers!
Of course you won't here this from your helpful sales person down at Circuit City or Best Buy and the factories are as tight lipped as a Nun at a Porn convention and who can blame them. They'll not sell sets if this becomes public knowledge, and their plan is that when these sets start to fail they'll be right there with the latest tech to hook them up again. Yup, planned obsolecence at it's finest. Don't worry, SED is due out sometime in 2008 to fill the bill and by 2010 it may even be affordable, just in time to replace all those bum Plasma and LCD sets.
In effect it was thst CRT sets lasted so long that was there undoing, most giving trouble free service day in and day out for 10-15 years. Believe me, it wasn't performance which signed their death warrant.
Now that being said I'm going to recommend you take a step back and look at this set. It's the Hitachi f59 series CRT RPTV, available in 51, 57 and 65 inch models. The 51 is usually $799, the 57 goes $999 on sale and the 65 about $1200. But I've seen the 65 as low as $1000 on sale and I picked up the 51 for $699 shipped so it pays to watch for the right sale.
These babies have a native resolution of 1080i and are the best bang for your buck available today, bar none. No bulbs to worry about and a picture that is unriveled below the $3000 mark, and even then it's still a level playing field. Believe me, I did my home work and searched far and wide before plunking down my hard earned dollars and I'm glad I did. The folks who live and breath TV swear by these and with good reason though you'd be hard pressed to believe it by looking at a show room model. It's when you get it home and tweek the settings that the magic happens, then you've got a set that will put anything to shame.
Heck, you can email me for the optimal settings if you do purchase one, settings derived using light and color meters, calibration disks and years of eyes on experience to achieve them. There's a wealth of info to be had over on the AVS Forum on these beauties, sort of like having a tech on call. In fact one of the regular contributers is an ISF Calibration Tech, a guy who makes his living helping folks achieve perfection on their home theater systems.
Alright, the answer WAS a bit long winded but I'd hate for you to make a poor decision due to lack of proper info. Good luckand happy viewing, regardless of what you ultimatly decide to purchase.
It was this which got me to thinking as the ONLY benefit of LCD over a CRT based set is it's ability to be hung on a wall. But when you take that LCD and house it in a RPTV you give up it's only advatage, that being space saving.
Now when you look at it terms of picture quality there's simply no comparison as CRT is still the recognized 'King of the Hill' by most experts in the field, it's true balcks, natural color representation and overall realistic diplay far and above that offered by either Plasma or LCD.
OK, so it doesn't seem as sexy right? How can this 'Old Tech' stand up to the latest and greatest? Well, both Sony and Mitsubishi have ceased any and all R+D in the field of Plasma and will no longer produce sets utilizing this technology. Hmmm, must be a reason don't you think?
And let's examine the hidden cost of LCD, be it flat panal or RPTV as well as DLP. These require what is known as an Arc Lamp to provide the backlighting for a picture to be seen and the do an admorable job of this...for about two years! Then, as your picture dims you consult your manual which will tell you a bulb change is in order. "OK, no problem" you say to yourself as you dial up the local repair shop, only to have your jaw drop when you find the replacement will set you back anywhere from $200-$300 smackers!
Of course you won't here this from your helpful sales person down at Circuit City or Best Buy and the factories are as tight lipped as a Nun at a Porn convention and who can blame them. They'll not sell sets if this becomes public knowledge, and their plan is that when these sets start to fail they'll be right there with the latest tech to hook them up again. Yup, planned obsolecence at it's finest. Don't worry, SED is due out sometime in 2008 to fill the bill and by 2010 it may even be affordable, just in time to replace all those bum Plasma and LCD sets.
In effect it was thst CRT sets lasted so long that was there undoing, most giving trouble free service day in and day out for 10-15 years. Believe me, it wasn't performance which signed their death warrant.
Now that being said I'm going to recommend you take a step back and look at this set. It's the Hitachi f59 series CRT RPTV, available in 51, 57 and 65 inch models. The 51 is usually $799, the 57 goes $999 on sale and the 65 about $1200. But I've seen the 65 as low as $1000 on sale and I picked up the 51 for $699 shipped so it pays to watch for the right sale.
These babies have a native resolution of 1080i and are the best bang for your buck available today, bar none. No bulbs to worry about and a picture that is unriveled below the $3000 mark, and even then it's still a level playing field. Believe me, I did my home work and searched far and wide before plunking down my hard earned dollars and I'm glad I did. The folks who live and breath TV swear by these and with good reason though you'd be hard pressed to believe it by looking at a show room model. It's when you get it home and tweek the settings that the magic happens, then you've got a set that will put anything to shame.
Heck, you can email me for the optimal settings if you do purchase one, settings derived using light and color meters, calibration disks and years of eyes on experience to achieve them. There's a wealth of info to be had over on the AVS Forum on these beauties, sort of like having a tech on call. In fact one of the regular contributers is an ISF Calibration Tech, a guy who makes his living helping folks achieve perfection on their home theater systems.
Alright, the answer WAS a bit long winded but I'd hate for you to make a poor decision due to lack of proper info. Good luckand happy viewing, regardless of what you ultimatly decide to purchase.
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