Q. The feature is being able to see an overlay from a previous shot, so as to compare the previous still image (excerpt from a previously shot scene) to what's currently being seen by the camcorder. I need to compare these two right there at the set, right there on the camcorder, so I won't have to plug it into an editing program to do the comparison.
What is this feature called exactly?
What is this feature called exactly?
A. I have been unable to find such a feature in a camcorder. Various google searches have turned up many references to this in editing software, but this is exactly what you don't want. I did find one reference to Samsung working on this in a still camera, here:
http://petapixel.com/2013/05/24/samsung-working-on-overlay-feature-to-help-strangers-snap-better-shots-of-you/
There are also references to Image Overlay in other cameras (like the Nikon D5100 in its Creative Effects menu - see here at the bottom of the page):
http://imaging.nikon.com/lineup/dslr/d5100/features02.htm
There are other references like in the Panasonic HX-WA2A and HX-WA3A, but it wasn't clear if it meant what you want.
So, to answer your question it looks like the name is simply Image Overlay, but it is not a feature widely available. My own half hour searching really didn't turn anything up (which is probably why there are no other answers given here). Good luck!
http://petapixel.com/2013/05/24/samsung-working-on-overlay-feature-to-help-strangers-snap-better-shots-of-you/
There are also references to Image Overlay in other cameras (like the Nikon D5100 in its Creative Effects menu - see here at the bottom of the page):
http://imaging.nikon.com/lineup/dslr/d5100/features02.htm
There are other references like in the Panasonic HX-WA2A and HX-WA3A, but it wasn't clear if it meant what you want.
So, to answer your question it looks like the name is simply Image Overlay, but it is not a feature widely available. My own half hour searching really didn't turn anything up (which is probably why there are no other answers given here). Good luck!
Underwater wireless live streaming Camera?
Q. So I am building an underwater ROV and my team needs a camera to mount onto our robot. It needs to be water proof, but if you have to buy a separate box it might be okay. It should be wireless, but we could run a Ethernet cable if we have to. And of course it needs to be able to live stream onto a laptop on the surface of the water.
I have looked into using a Go Pro, but I am unsure of what model to get and Go Pros seem a little pricey, so cheaper options may be better.
Does anyone have any ideas on what i can use? If i use a Go Pro i need to know which model is best, but I would like cheaper options if they exist. Thank You
I have looked into using a Go Pro, but I am unsure of what model to get and Go Pros seem a little pricey, so cheaper options may be better.
Does anyone have any ideas on what i can use? If i use a Go Pro i need to know which model is best, but I would like cheaper options if they exist. Thank You
A. Underwater wifi is relatively new and not "readily" available.
http://nypost.com/2013/10/17/yes-underwater-wi-fi-is-a-thing/
at least, not from regular stores. If you are depending on the GoPro wireless connectivity to do what you want, I would bet against it - at least for now. That means some sort of tethered version. As far as I know, there is no wired, direct, "streaming" capability that will do what you want. Remember, the GoPro is a camera/camcorder and designed to capture video locally to a memory card.
Wireless communication is one thing - wireless video is a whole different animal (bandwidth issues in the aquatic/marine environment).
And if you are using a robotic craft, I am guessing the ROV is going to be more than 100 feet away which means if on land, would be on the edge of wifi's reach - underwater, even more so. The GoPros included waterproof housing is rated to only 40 meters (~130 feet).
A camera-only (no local recording), with a cable, solution may be a more do-able option. Since we don't know how deep the camera needs to go and we don't know how far away the camera will be (it could be 5 feet deep but 300 feet away) it is impossible to actually make a recommendation. This shallow, but far away is different than 300 feet deep because of the pressure exerted at that depth.
Your solution may be as simple as
http://www.amazon.com/OceanDrop-Underwater-Training-Observation-Inspection/dp/B007EFG3N2
which is even more than the GoPro. This is an underwater wired camera designed to do what you want. Similar to a security camera, it has a single cable that includes connections for power and the video feed. The power is supplied on the computer side of the cable - the camera does not carry local power. The camera does not store video locally, but sends the video over the wire to an analog/digital converter. This can be a standalone box like those from Blackmagic Design, Roxio, Elgato, Thompson/Grass Valley/Canopus or a card fitted to the computer.
And keep in mind that at about 40ft-50ft and deeper, you will likely need to add light. Underwater lighting can be pricey...
http://nypost.com/2013/10/17/yes-underwater-wi-fi-is-a-thing/
at least, not from regular stores. If you are depending on the GoPro wireless connectivity to do what you want, I would bet against it - at least for now. That means some sort of tethered version. As far as I know, there is no wired, direct, "streaming" capability that will do what you want. Remember, the GoPro is a camera/camcorder and designed to capture video locally to a memory card.
Wireless communication is one thing - wireless video is a whole different animal (bandwidth issues in the aquatic/marine environment).
And if you are using a robotic craft, I am guessing the ROV is going to be more than 100 feet away which means if on land, would be on the edge of wifi's reach - underwater, even more so. The GoPros included waterproof housing is rated to only 40 meters (~130 feet).
A camera-only (no local recording), with a cable, solution may be a more do-able option. Since we don't know how deep the camera needs to go and we don't know how far away the camera will be (it could be 5 feet deep but 300 feet away) it is impossible to actually make a recommendation. This shallow, but far away is different than 300 feet deep because of the pressure exerted at that depth.
Your solution may be as simple as
http://www.amazon.com/OceanDrop-Underwater-Training-Observation-Inspection/dp/B007EFG3N2
which is even more than the GoPro. This is an underwater wired camera designed to do what you want. Similar to a security camera, it has a single cable that includes connections for power and the video feed. The power is supplied on the computer side of the cable - the camera does not carry local power. The camera does not store video locally, but sends the video over the wire to an analog/digital converter. This can be a standalone box like those from Blackmagic Design, Roxio, Elgato, Thompson/Grass Valley/Canopus or a card fitted to the computer.
And keep in mind that at about 40ft-50ft and deeper, you will likely need to add light. Underwater lighting can be pricey...
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