6

If you want to make publication quality images of persons 1000 ft away you are looking at some serious kit, probably more than $20k. Let's assume, though, that you aren't looking to make pretty pictures. Most circumstances I can think of which would require a picture of a previous trespasser involve holding an image up next to the person and saying to them (...


4

The one possibility everyone has missed is storing the micro SD card in a hollowed US nickel. I have used this successfully in investigation situations where I knew I would be detained. Most security staff are grossly undereducated for the job, a plus in such a case. You must have several SD cards on you, as well as coins, to be sure to be ready. You also ...


4

In my opinion it has not much sense. You want to sell "licences" of your photo. It is your photo and you are licencing it to to the buyers to do "whatever" they please (using the terms and conditions the website states). Do you want to licence a lower quality image? Then yes, resample it. If you want to prove for example in court that you took a photo I ...


4

If you are concerned about tampering, you really need the file to be signed cryptographically; Nikon doesn't do that. If your concern is simply that a download might be corrupt (or that your flash card might have an error that corrupts the file), don't worry. The firmware has an internal checksum checked by the camera's firmware updater. (Details for some ...


4

How do different colours look in Infrared Light? They don't look like anything in infrared light. A "true color" infrared image would appear totally black to human eyes. What we define as "color" is the way our eye/brain system perceives certain wavelengths or combinations of wavelengths from the much broader electromagnetic spectrum. The portion of the ...


4

As @null said, infrared is an invisible (to the eye) band of frequencies beyond what we can see. It's hard to quantify how visible colors translate to monochrome- it has more to do with how they are produced than what color they appear to be. Dye based colors are almost always transparent to infrared. This is why some bathing suits that depend on bold ...


3

On my iPhone in the Photos app you can revert to the original picture at any time. Select the picture you suspect has been edited, select “Edit”. If the picture has been edited, you will see “Revert” in the lower right corner of the screen. Touch that and it will ask if you want to “Revert to Original”.


3

However, none of these services provides a encrypted connection, which makes me nervous about the safety of my personal data and images. Should I be worried ? The connection is of little practical importance, IMO. The odds that someone is stealing your images by intercepting your communications is pretty low, given there are so many easier ways to steal ...


2

If Nikon doesn't supply it, I doubt there is anyone else you can trust to supply the hash. If you've downloaded it off the Nikon website it should be safe.


2

Question is quite old, but nevertheless I want to comment. Some of my friends just recently started despectacle.com offering a microSD card adapter called "CryptSD" which would do pretty much what you are looking for. Though the encryption is not done by the camera, but the SD card adapter itself. Not quite sure when it is going to be officially launched, ...


2

Securing against it blowing over generally involves putting weights on it. Usually sandbags are the best choice and these can be placed on the feet or, sometimes, hung from the centre column. Or if you are good with tools you could create some way of screwing or clamping the tripod feet down. There are some things you may need to consider such as People ...


2

Without full knowledge of your exact location it's not possible to say if you actually require permission, or not. My university had a mix of buildings on public streets, and campuses which were not publicly accessible. Since you've said that you were "taking some photographs on my university campus" and were able to recognise it as part of a campus, it ...


2

I think it comes down to whether your university is private or public. From the Met's webpage on police guidelines for photography: Freedom to photograph and film Members of the public and the media do not need a permit to film or photograph in public places and police have no power to stop them filming or photographing incidents or police personnel. So, ...


2

Edit: Now that I've already posted the answer, I realized maybe you only need a simple one-way mirror setup: you just put the camera in a dark room or a box and use the beam splitter as a window from which it looks into the brightly lit room with no light directed straight into the window. The brighter the room and darker the box, the better the effect. It ...


1

Digikam is FOSS, so normally not interested in your data. As far as I can tell the privacy policy is only about using the photo uploaders (Google Drive and others) present in the application. Otherwise the app will run entirely on your computer and doesn't leak information to anyone.


1

Front projection systems were once popular. A slide projector is mounted 90 degrees to the lens axis. This slide projector has a dual light source. A standard projector lamp and an electronic flash tube. A lenticular screen is positioned behind the principle subject. The image forming rays from the slide projector bounced off a beam splitter mounted just ...


1

Most inexpensive cameras that image in both visible light and IR use two separate schemes: full color is shown when there is sufficient light, and IR is displayed equally in all three color channels, so is monochrome. This is just a choice made by most manufacturers. You can buy an IR filter that blocks most of the visible light to experiment with a camera, ...


1

When you use the Nikon WMU (Wireless Mobile Utility), it allows you to create wifi networks that are secured, but by default, it will create an unsecured network. To set up a password protected network, you have to configure the wireless adapter, and the device the WMU app is installed on.


1

Short answer, no, there's generally no point in resizing before submitting to a stock agency. With most agencies, once the customer chooses to buy a photo (actually a license to use the photo; they don't actually get the copyright) and pays for it, they can download the photo immediately. The agency isn't going to contact you to get the high-resolution ...


1

Magic Lantern has a plugin that encrypts photos as you take them, and unencrypted data never touches the SD card. https://www.magiclantern.fm/forum/index.php?topic=10279.0 You will need to use a camera compatible with the plugin (a number of Canon DSLRs, listed in the link.) But that should give you exactly what you're looking for, I think.


1

This would be easiest to do by using some kind of Linux-based device (e.g., a rooted smartphone) and writing a script that: retrieves image from device camera to a file, with whatever tool necessary creates an encrypted copy (e.g., with gpg) of the file on permanent storage. It is important that only the public key (which can encrypt), not also the ...


1

Well, if it's for something like underage porn, don't bother. It's only a matter of time before you get caught. The sooner the better. Recently reading the history of "Tank Man" though, made me take a closer look at this subject. Tank man is of course the Chinese protester who stopped the entire column of tanks with a simple, nonviolent stand down. The "...


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