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22

Weather Sealing is protection of the internal parts of a camera from external influences such as moisture, dust, and humidity. The degree of this weather sealing varies between manufacturers and also within models by each manufacturer. The protection is provided by both rubber sealing with silicon rings and gaskets as well as design considerations such as ...


21

Awesome question, I am studying for my Private Pilot license and (as a photographer) found the chapter on Weather Theory facinating. Among other things, it gives a very reasonable description on the predictors for fog (and other meteorological events). It describes 4 kinds of fog and when each may/will occur: Radiation Fog: "On clear nights, with ...


21

The camera interior of an SLR camera is not air tight. However condensation is not generally a problem when changing lenses outdoors. Condensation occurs when moving indoors due to a cold glass surface being in contact with warm moist air. When changing lenses outdoors the cold air is dry and so condensation will not form inside the camera. When taking ...


18

There are several separate issues involved with your question. Let's look at each in turn. Sudden temperature changes When materials are subjected to sudden temperature changes they can tolerate the change or can be irreversibly damaged. It all depends on the materials involved, the temperature extremes involved, and just how rapid the change is. Take any ...


17

You might want to look at weather forecasts for astronomy - some of these sites go into more details than generic weather forecasts, and have predictions for things of interest to astronomers, including seeing (how steady/turbulent the atmosphere is) and transparency (how clear the atmosphere is). A web search for "astronomical weather forecasts" will find ...


8

Look at the channel for weather here. I get an email to my phone for various weather presets I made. https://ifttt.com


8

One of the best times to shoot outdoor portraits is when the sky is cloudy and overcast. It provides nice, even, neutral lighting without harsh shadows and back light. Natural light isn't always (or even often) going to be the best that it can be. The solution is to provide the light you need yourself. This can range from a couple of simple reflectors and ...


8

Personally, I have never taken any steps to protect the camera from condensation, and I've had the same camera for about 7-8 years without any signs of damage (although it is a 7D which is a pretty solidly build camera). The only precaution is that I don't change lenses immediately after I get inside. Also, just leaving the camera in the bag will provide ...


7

You're looking for very humid conditions followed by a (somewhat) rapid cooling, relative to temperature. In practice, Spring and Autumn tend to feature the sorts of temperature swings needed, but fog can obviously occur any time of the year. The humidity needed to form fog will most likely come from recent rainfall, but again, this can vary. A fast ...


7

From my reading, the amount materials within a "handheld" lens expand / contract over, for example, 15C is so minimal it's not worth thinking about. However this really becomes an issue on large telescopes, both refracting and reflecting (even more so). Why? As a (rough) example, let's imagine a large reflecting telescope which has a body length of 3m, ...


7

Is it safe to carry a metal tripod during the rain/thunderstorm Having a collapsed tripod strapped to your bag is unlikely to be a problem. Holding an extended tripod over your head in the middle of an open field during a thunderstorm is definitely a bad idea. Then again, simply standing in an open field during a thunderstorm is also a bad idea. If there's ...


7

I've lived in Canada for a long time now. And my Nikon lenses have always been fine going from a comfy 25 degrees to minus 40 in a matter of minutes. Apart from some lens misting which I need to wipe sometimes, they've been impeccable.


6

I check the weather forecast. Of course many people are interested in this information so weather centers predict it. It is especially critical for pilots. Try http://www.intellicast.com/National/Humidity/FOGcast.aspx or similar. They also define it on that very website as "Fog forms when the difference between the air temperature and dewpoint is 5°F (3°...


6

Changing environments, especially those that are as extreme the ones you describe, can damage your equipment for reasons you've already described within your question. Different materials react to temperatures differently. This includes expansion, contraction, and changes in brittleness. Warmth and humidity are favorable to fungus. Water can condense and ...


5

As previously mentioned, The Photographers Ephemeris is an awesome program and what I personally use. I highly suggest viewing on a tablet versus a phone. Also, the whole moon appearing larger thing is an optical illusion during its rising and setting. The moon doesn't actually get closer to the Earth, in fact, it's progressively moving further away day-by-...


5

I use the Photographers Ephemeris. The great thing is that they have portable versions for mobile devices so you can take it with you to the location or for travel. Here is a description from their website: The Photographer’s Ephemeris (TPE) helps you plan outdoor photography shoots in natural light, particularly landscape and urban scenes. It’s a map-...


5

I have found the best, most practical way to avoid condensation on cameras is to ensure that they are in the same environment for several hours before a shoot. For example, if I plan to shoot at sunset at the beach, I put my camera equipment in the trunk of my car, or on a porch, around 2 or 3pm (several hours before) the shoot. This way the equipment is ...


5

You have to gradually let equalize the temperature. Don't bring the camera and lenses straight from a cold place to a warm place or viceversa: if you'll shoot in the night let the equipment outside some hours earlier. Then, to avoid mist formation, you can put the equipment inside a plastic bag with some silica gel, and only then bring it back home: this ...


5

What about a rain sleeve like the one shown here at Amazon? Very cheap solution to your problem...


5

Morning mist tends to form after a rainy day followed by a clear night, and you can also get mist on a hot sunny day following a cold night. You are more likely to see mist around bodies of still water or in river valleys, and can also find it near wet, marshy ground such as fenland.


5

its going to rain and its going to be cold. Everybody can shoot great pictures if the conditions are easy. Making it work no matter what is part of being professional. I think that the effort the photographer has to put into his work grow exponentially the further away the conditions are from ideal. If it rains for them and is cold, be mentally prepared ...


5

This is not a digitally-created effect; this is a physical atmospheric phenomenon called a sun halo or 22.5° halo. It occurs when there's a thin layer of high-altitude cirrus clouds with hexagonal ice crystals that refract the passing sunlight, creating a rainbow-like effect. The image you posted is a particularly good example of the phenomenon; it has a ...


5

My experience: Temperature -45C. Standard lithium battery for Olympus E-3 has weakened after about 25 shots. Grip with 6x lithium iron phosphate batteries (every is 1200 mAh, but I doubt it's correct value - they were bought on e-bay) has allowed me to take about 300 photos during 40-minute walking and then still has been in good mode. So for very cold ...


5

Marine weather forecasts give the height of waves (Douglas scale) and general direction of the swell, but this is out at sea. In addition to this, waves that break on the shore are very dependent on local conditions: slope and orientation of the strand, local tide currents... When shooting a specific wave you have to see what comes next... the wave ebbs ...


4

I live in South America, in Uruguay, where our heat during summer is around 36C up to 42 C (rare but this year we are having a heat wave). I have used my Canon 60D with heat, and left it in my car for a short time, around half an hour, I covered it with some clothing, yeah it sounds stupid, nothing happened to it. What's more dangerous than heat, in our ...


4

Is this a theatre piece that you are shooting for publicity or documentation? If so, I'd talk to the lighting director and director/choreographer and explain the problem and see if you can arrange a dress rehearsal with more light. You can then either underexpose and/or post-process so the resulting images match the intended lighting effect.


4

If you mean weather forecasts like this one it can only provide general and not-so-reliable information. It is too vague. 30% cloud coverage means that 30 % of the sky is covered by clouds. What type of clouds (cirrus, cumulus, stratocumuls,...) no one knows. On the other hand, there are detailed models like CHMI's Aladin with different maps. Here the B&...


4

I have no idea if this holds true, but in growing up in Phoenix, AZ...the city is massive and sits within a valley, so it usually has a constant smog bubble. That bubble usually gets pushed out during thunderstorms, when wind and rain can get rid of it. From that, I can only pose that, the best and clearest skies will be available the day after a good ...


4

In my experience, most well-padded bags will hold dry in medium rain even for several hours. They will get soaked, but very, very slowly. The only source of immediate leaking could be the zippers. So the advise to the cautious would be to buy well-padded bags with weather-proofed zippers. Note that it also depends on the design of the bag - e.g. mine has a ...


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