Alley in Pisa, Italy

by Lars Kotthoff

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36

Apparently yes: Police announced that part of the SD Card has since been discovered in Wakita's body (some Japanese blogs are reporting that they found it in his, ahem, poop). On the recovered card, officers apparently discovered the peeping pictures in question and arrested Wakita. They are pretty durable things. It sounds like in this case the guy ...


27

Scandinavia is pretty much the safest part of Europe. You have absolutely nothing to worry about, and there is no reason to behave any different than in your home country in regard to safety. That being said, things tend to break or get lost at the worst time. Backing up your photos is definitely a good idea, as is getting a good bag and straps. And do not ...


20

I think you've answered the question yourself pretty well, with citations and everything. There's little real risk, and the flash manufacturers are erring on the side of caution in order to protect themselves from litigation. That said, I don't think being flashed right in the eyes with a bright flash is very nice, especially from up close. And I'm not even ...


18

China is huge. China is so huge that two cities can seem to be two different countries. This means Chinese do travel to other cities as "tourists" too. I am from Hong Kong, so I am a Chinese too. So being in China I think I can offer some good insight. Fact is, Chinese who travel to other cities as tourists are often the more wealthy ones, and enjoy a so ...


18

Having lived in Europe all my life, most of it with a camera around my neck (at least during my free time), I wonder where you got the idea that it's inherently unsafe to be in Europe while having a camera with you. The only time I've ever had gear stolen in 30 years+ was during a burglary at the house I was staying... Of course every country and city has ...


17

Carbon fiber can take quite a hell of a beating, both in terms of environment (water, sand, snow) and temperature. I've heard a lot of people discussing or complaining about how carbon fiber is susceptible to extreme cold, however I think most of it is hearsay and speculation. There are only a couple times when I've read something regarding carbon fiber ...


15

Yes the trigger voltage on some old flashes is too high for modern electronic cameras. There is a page on botzilla Photo Strobe Trigger Voltages which lists many old flash units. I don't see your dad's flash model there, but the 20 B3 model had a trigger voltage of 168 volts. According to this thread on photo.net, the 7D can handle up to 250V, so that ...


14

Most high-end SD cards from a good brand are waterproof. It will survive submerging in a fish tank for weeks, acid proof or not, I don't know. Generic brands or low-end cards are not as well constructed and are NOT waterproof. However, taking the question seriously, since the card ultimately comes out with your waste. I think it would be better to wrap it ...


11

The article in rfusca's answer includes some references: The Aero-Ektars, by NASA scientist Michael Briggs; Radioactive Materials in Camera Lenses, from the Health Physics Society (an organization focused on radiation safety); and Thoriated Camera Lens (ca. 1970s), from Oak Ridge Associated Universities's professional training on radiation safety. From the ...


10

Well, the viewfinder itself is not going to cause infections, but some of the germs that cause conjunctivitis are highly contagious. If you're passing your camera to people with red eye, ask them to wash their hands and to use the LCD screen instead. In general, though, these germs are not particularly long-lived away from a human host. Just letting the ...


10

No, this is safe as long as the battery is not in the charger. Some chargers may have a small power drain from being plugged in (even when not charging anything), but it shouldn't do any damage to the device to leave it plugged in.


10

It depends the weight of the lens. How much exactly depends on the camera. Your examples are quite light telephotos and those are no problem at all. In general when the lens is too heavy, it comes with a tripod mount to attach it.


9

There is no such thing as absolute safety. But you are probably fine doing this. A few things to consider: Some wildlife photographers say they are doing this (read this in a few blog posts, can't remember where). As well as a lot of sports photographers. But these guys also have equipment insurance and can be quite careless in what they do. I remember ...


8

I'm not entirely sure if @StanRogers answer covers it entirely so I'll add this. When you use compressed air canisters several things happen besides the blast of air which can (as Stan describes) remove things like the thin film coating. First, the gas, stored under pressure expands quickly, this gas expands because its heating up and has room (less ...


7

It might be worth considering that modern aircrafts (like A380) have a large amount of composite materials, including carbon fibre. To cite Wikipedia "The A380 is the first commercial airliner to have a central wing box made of carbon fibre reinforced plastic". Flying at almost 40 000 feet and experiencing temperature as low as -40 every day is proof to me ...


7

I would never use my flash on full power less than 1 metre from my face, for the simple fact that it's so frikkin bright. The issue isn't that it's only as bright as daylight, but that it can be miles brighter than the surrounding light, so your eyes will not be accustomed (the aperture will be fully open) and the light will be far more than your eyes can ...


7

It should also be noted that the conversion rate between Rems and Seiverts is 1 mR = 10 µSv. So if a chest x-ray is 10mR (according to the article @rfusca linked), thats about 100µSv. According to the chart, that is equivalent to the approximate total dose received at Fukishima Town Hall over a full two weeks, and just shy of half what those two Fukishima ...


7

I'm going to answer a different question. :-) Instead of planning to strain my poo for the next few days, I would happily format the card and show the goons. What I would be wagering is that they would not realize how easily one can recover images from a freshly formatted card. If that weren't good enough, I would voluntarily remove the card and give it ...


6

Typical lens radiation was apparently approaching 1 mR/hr at the surface of the lens and tapers off rapidly with distance. I'm not sure exactly where it lands in your chart, but the same source states that a chest xray is about 10 mR.


6

I would say no, but only because I have been around possums. If cornered or threatened, they can get downright vicious and they move very quickly. If you've ever seen one in this kind of state, you'd appreciate the damage they can do. Getting you and your camera inches in front of a mother with babies will probably result in (at least) your camera getting ...


6

I'd expect it to survive. Stomach acid is reasonably nasty stuff but residence time is not vast. You could try it now so that you know when needed. Swallow an SD and a micro-SD at the same time. Anyone looking is more liable to find the SD and may stop at that stage. Even if connections or PCB were damaged I'd expect the memory proper to have a good ...


5

In article "Flash Photography and the Visual System of Birds and Animals", Dennis Olivero, DVM, and Donald Cohen, ophthalmology MD, speak of studies performed on humans and animals where it has been found that to cause permanent damage, bright light has to be focused (which a photographic flash is not) for extended period of time (which a photographic flash ...


5

There is a very real danger of producing a very low quality photograph of your baby while disturbing them at the same time if you use a flash from less than 1m away. Bounce the flash off a white ceiling or a large reflector to avoid the danger of having to shake your head every time you look at these pictures 10 years from now.


5

Given that you specifically state "small rare earth magnets" I can tell you the data will most definitely not be affected, but let me lay out my argument. A magnetic field can induce a current - BUT this requires a pulsating magnetic field. Your rare earth magnets create a static magnetic field, so technically only if something moves in the magnetic field ...


4

It wouldn't harm the charger, but it is a good practice to turn off the switch and save power.


4

Sure, I do this all the time. Here is a tip: Thread your camera strap through the tripod legs. This way its 1) out of the way, and 2) if for some reason the quick release fails, the camera will drop only as far as the strap will allow. Good for an OMG! moment, but no sickly metal/glass crash sound at the end. Honestly, this is really the only time I ...


4

It depends on the turning moment exerted by the lens - it's weight multiplied by the distance from the mount to the lens centre of gravity. A 200g lens could rip the mount right off if it were long enough. Meanwhile the Canon 85 f/1.2L is just fine despite weighing over one kilogram as it is very short. However you usually don't have to worry about this as ...


4

As a Parisian, I can tell you that you can shoot inside the Opéra Garnier. However, you may have to buy a guided tour to be allowed to shoot. I don't think tripod is allowed but you sure can use a monopod or any other device which is not too big. Montmartre, as most touristic places, knows its pickpockets, thieves, riff-raff... Close your bags and hold them ...


4

As others pointed out, losing your camera is always a risk, and with it, you might lose your pictures. A couple of really easy tips: Take a picture of your name and address. Anyone who finds your camera might turn it on, see the picture, and return the camera. You might even add "$50 reward to the person who returns this camera to me" (or whatever it is ...



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