6 votes
Accepted

Security: What lens is needed to capture a person's face from 1,000ft away?

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 ...
5 votes
Accepted

How do different colours look in Infrared Light?

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 ...
  • 169k
4 votes

Should I submit scaled-down images to stock images to protect my work?

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 ...
  • 21.3k
4 votes

How do different colours look in Infrared Light?

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 ...
  • 6,156
3 votes

Can an edited photo on my iPhone be recovered if the original has been deleted?

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” ...
  • 1,076
3 votes

Are unencrypted online printing services safe to upload images to?

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 ...
2 votes

Do any DSLRs offer in-camera file encryption?

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 ...
  • 21
2 votes

Do I need a permit to take pictures on UK university ground I'm a student at?

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 ...
  • 9,440
2 votes

Do I need a permit to take pictures on UK university ground I'm a student at?

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 ...
  • 49.4k
2 votes
Accepted

Taking Photograph Through Beamsplitting Glass so the object photographed cannot see camera lense back

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 ...
1 vote

What data does digikam actually share?

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. ...
  • 17.2k
1 vote

Taking Photograph Through Beamsplitting Glass so the object photographed cannot see camera lense back

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 ...
  • 36.5k
1 vote

How do different colours look in Infrared Light?

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, ...
1 vote
Accepted

Is a WU-1a WiFi adapter secure?

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 ...
  • 309
1 vote

Should I submit scaled-down images to stock images to protect my work?

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 ...
  • 490
1 vote

How to protect photographs on camera from being viewed/copied?

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 ...
  • 169
1 vote

How to protect photographs on camera from being viewed/copied?

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 ...

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