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22

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

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

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

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

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

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 ...


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

As already answered, no problem changing the lens as much as you want, in any temperature, provided: the temperature remains constant during the lens change no external particles enter the lens mount (snow, rain, dust) I tend to change lenses with the camera facing downwards at 45 degrees, with clothing shielding any blown-up snow. Being a Russian pro ...


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

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

At North Myrtle Beach, the variation in waves is primarily a function of wind direction, speed and bottom contour. Wind will push water into waves in shallow areas. An offshore wind has time to build up wave height as it pushes with the surf motion. A wind blowing from shore out to sea pushes opposite the surf and tends to reduce the wave height. You can ...


3

Not just in snow, but in general, in cold, battery runs out much faster. If it is not snowing, you are okay. However, your kit lens is not water sealed, so you must protect it from snow similarly to protecting from rain. I do not think that would be necessary. However, check the specs of your battery. (Minimum operational temperature, minimum storage ...


3

If your main goal is to hike and to document that hike with some memorable pictures, you should take your phone camera. You mention that the last camera you used was a digital Canon (presumably point & shoot) ten years ago. The cameras in today's high-end and medium-level smartphones easily surpass that of digicams of that era. And, the results will be ...


3

Sprites are an atmospheric phenomena associated with lightning during thunderstorms. From Wikipedia: Sprites are colored reddish-orange in their upper regions, with bluish hanging tendrils below, and can be preceded by a reddish halo. They last longer than normal lower stratospheric discharges, which last typically a few milliseconds, and are usually ...


3

There are websites that cater to surfers that give predictions for wave height at various beaches. One that I know is wetsand.com. I have used it in the past but its certificate is questionable now. A web search turned up surfline.com and surf-forecast.com. I haven't tried them.


2

According to the information provided by Canon, the 25-105mm F/4L is weather-sealed, that is why we use the umbrella icon in its specification page. Some Canon lenses require a screw-on filter to complete the seal but this is not one of them. The exact wording from Canon is: Tight seal structure ensures excellent dust-proof and drip-proof performance. ...


2

I've used the EF 24-105mm f/4 L IS for short periods in light to medium rain with no ill effects before. Mine has also survived collisions with football players, bumps from working in a dense crowd, and the occasional 'soft' drop from a foot or two. The thing is built like a tank. But, as AJ Henderson points out in his answer, it is also a lens with ...


2

I think you can do some experiment on your own. I would take several snapshots (with camera,settings, focus and light blocked to the same values) and with different temperatures of a slanted edge standard and measure the MTF with ImageJ and MTF plugin or with Imatest. Then you can plot the MTF graph with different temperatures and see the result. I think ...


2

I was able to snap some pictures early in the morning during a recent blizzard. I believe it depends on what effect you are after. Sometimes a longer focal length, focused on the background can make for some interesting, surrealistic effects with the up close snowflakes. A smaller aperture will show the shape of the blades. A larger aperture will turn them ...


2

The greatest benefit from including silica gel in your camera bag is to keep the inside of the bag dryer than the outside air when stored at room temperatures that tend to be fairly moist for long periods of time. If you bring your cameras in from a cold environment, particularly sub-freezing temperatures and then bag them in a warm, moist environment ...


2

Others have addressed most of your points about the battery life and such. I will address your last one. Yes, bring a large ziplock bag. Put your whole camera with lens in the bag when going back inside to prevent condensation on your equipment. If you cannot wait to download the pictures, take a second (small) ziplock to put your card in before you go ...


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