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15 votes

Canon EOS 50D forgets date every time battery is changed

I'd change the CR2016 anyway* - they're only about a buck even at full retail price - & see if it improves. Also give the contacts a quick spray with contact cleaner or 90% isopropyl & allow ...
Tetsujin's user avatar
  • 23.4k
13 votes
Accepted

Is it okay to not use the spare battery?

I don't know that there is a "best course of action", but here's what I do... I have multiple batteries, and I numbered them. When battery #1 gets low, I put in battery #2 and charge #1. If they've ...
twalberg's user avatar
  • 5,138
8 votes

Is it okay to not use the spare battery?

What you're doing now is fine. Li-ion does not need to be fully charged for storage. In fact, the best state to store them in is between 30-70% charge, but I'd probably only bother with that if ...
Nate S.'s user avatar
  • 218
6 votes
Accepted

How can I tag my photos with electric compass info giving direction my camera was facing?

There exists certain cameras which record this information automatically. The Pentax line of DSLR cameras from at least as far back as the K-5 have saved pitch (elevation) and roll (inclination) ...
Top Rock Photography's user avatar
4 votes
Accepted

Native ISO vs Boost ISO. What kind of amplification corresponds to each of them?

You're getting a little confused. Un-boosted ISO Or what you're calling "native range." There's a native ISO setting, which is what the sensor uses without any amplification, and you can consider ...
inkista's user avatar
  • 52.2k
4 votes
Accepted

How careful do I need to be about using hot lights in a private residence?

A typical home circuit has a 15 amp breaker. At 120 volts, that's 1800 watts. Different outlets may help, but generally outlets in the same room (or even adjacent rooms) are on the same circuit. (And ...
mattdm's user avatar
  • 143k
4 votes
Accepted

Multiple use of Electric contacts cleaner

i applied the spray and it returned to work normally but after 2-3 days the problem comes back. In order for that stuff to work, you have to get it on the actual contacts. If you didn't open the ...
Caleb's user avatar
  • 31.7k
3 votes

Hot shoe pinouts / connections - do any of them provide power?

The two hotshoe designs with power supply contacts for small accessory flashes are the newer-version micro four-thirds (Panasonic/Olympus) and Fuji hotshoes. The power contact on both of these is ...
inkista's user avatar
  • 52.2k
3 votes

Spilt Isopropyl alcohol on camera, now it doesn't turn on

Best practices for the future: Do not serve alcohol to cameras and lenses. They don't enjoy it as much as you do. They also tend to not tip bartenders – 50mL is 25% more than a shot. Let your camera ...
xiota's user avatar
  • 27k
2 votes

Native ISO vs Boost ISO. What kind of amplification corresponds to each of them?

The answer is 2, hardware amplification only for native ISO, hardware with additional software amplifications/reduction for extended ISO. Extended ISO is like taking a RAW image and then changing ISO ...
den miol's user avatar
  • 227
2 votes

How careful do I need to be about using hot lights in a private residence?

You should be concerned because if you trip a breaker, sometimes things like clocks and TV settop boxes are disrupted. The typical household wall outlet allows for a maximum loading of 15 amps however ...
Alan Marcus's user avatar
  • 39.2k
2 votes

Multiple use of Electric contacts cleaner

TL;DR: Blindly spraying nondescript contact cleaner into anything you wouldn't disassemble, BAD IDEA. Electrical contact cleaners are usually designed for contacts that rub against each other in use -...
rackandboneman's user avatar
2 votes

Is it okay to not use the spare battery?

Is it really healthy to simply forget it inside a drawer and after days of not using it just charge it and go to a photoshoot with it? Yes. Lithium ion batteries in general are quite durable. They ...
juhist's user avatar
  • 6,760
2 votes

Native ISO vs Boost ISO. What kind of amplification corresponds to each of them?

Strictly speaking, "Boost ISO" means nearly as much as "HD" written on the objective. It is a buzzword without formal definition and may be misused as such. Consequently, it is not ...
Euri Pinhollow's user avatar
2 votes

Is it okay to not use the spare battery?

"Days" is not a problem for an intact li-Ion battery, neither should "months" be. What should not be allowed to happen is letting them self-discharge below a minimum safe voltage. Well designed ...
rackandboneman's user avatar
2 votes

Hot shoe pinouts / connections - do any of them provide power?

There are some cameras coming with mini flashes without a power source of their own (such as the Panasonic DMC-LX100): naturally they need to provide power on their extended flash ports. In a similar ...
user98068's user avatar
  • 936
2 votes

Do Electronic Viewfinders Record Data?

A digital photo is not a "snapshot" taken from the electronic viewfinder. A digital photo is read directly from the sensor. The electronic viewfinder is fed with basically a video feed from ...
osullic's user avatar
  • 12.4k
1 vote

Do Electronic Viewfinders Record Data?

Electronic viewfinder is just a display which represent the data, captured from sensor. It is memory (and processor) only operation. When you instruct the camera/phone to take the image it get it from ...
Romeo Ninov's user avatar
  • 12.1k
1 vote
Accepted

How do older AF Nikkor CPU lenses measure the selected aperture to provide data for the camera?

Nikon cameras measure/know the aperture setting (for non-E lenses) by the aperture lever interaction/position. The only thing the CPU does is tell the camera the lens model, focal length, min/max ...
Steven Kersting's user avatar
1 vote

How does the Canonet GIII electronically control its mechanical parts?

One common mechanism used in early automatic exposure camera uses a clamping bar that, at the start of the exposure, keeps a meter needle fixed at its most recent position. Once this has happened, a ...
rackandboneman's user avatar
1 vote

Affordable camera for a macro photography

If you don't have to have a Sony or Canon, you could get a used Olympus TG-4. It has what they call a "Microscope" mode. I just checked, and mine will focus down to about .5cm x .9cm. You ...
GrantRobertson's user avatar
1 vote

Is it okay to not use the spare battery?

Is it really healthy to simply forget it inside a drawer and after days of not using it just charge it and go to a photoshoot with it? Days are not a problem. Back with my old 550D, I'd shoot around ...
Dynat's user avatar
  • 141
1 vote

Tamron 24-70mm F/2.8 battery drain issues

It appears to be a known problem between the lens and some recent Canon bodies: Flickr: Tamron 24-70 drains my battery Someone in that discussion says that Tamron has a fix, so get in touch with ...
xenoid's user avatar
  • 21.4k
1 vote

How careful do I need to be about using hot lights in a private residence?

Would it make it safer if I plugged each light into different outlets? If by safer, you mean fire-hazard, life safety, then: assuming the house is wired according to the Canada Electric Code (or ...
scottbb's user avatar
  • 32.8k
1 vote
Accepted

What Field of View does an Electronic Viewfinder typically have?

The FOV for a viewfinder on a rangefinder would typically be a little wider than the lens so that the photographer could see what is just out of frame. For an SLR (digital & film), the FOV would ...
Diego's user avatar
  • 298
1 vote

Native ISO vs Boost ISO. What kind of amplification corresponds to each of them?

Native ISO is the camera ISO sensitivity that requires the least amplification to be read by the A/D. It's a precise attribute of the design of the camera, does not have to match the standard ISO ...
motoDrizzt's user avatar
1 vote

Will a laser beam damage a non operational CCD?

If a laser beam is strong enough to cause thermal damage (ie burn or melt the sensor, the filter in front of it, or even the shutter or aperture), it will be almost irrelevant if an image sensor (of ...
rackandboneman's user avatar
1 vote

What are the electrical contacts in a Nikon F-mount?

For completeness: There was also an early F-mount autofocus system around the F3AF and a few dedicated lenses which did have contacts in the same place but had an incompatible pinout (at least two ...
rackandboneman's user avatar

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