Posts Tagged ‘adapter’
Body Mount Adapter
Searching for Body Mount Adapter? Perfect. This page was fabricated just now in order to help you find Body Mount Adapter! It will display lots of different sources to get them, so be sure to scroll down to the bottom of the page in your search.
First up, let"s start by searching Ebay for Body Mount Adapter:
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M42 Screw Lens to Canon EOS Body Mount Adapter Ring |
Question: Does anyone know what a good brand Eos Camera Body to M42 screw mount adapter is? Thanks?
Answer: M42 is pentax screwmount: try Kilfit. they still make strange high quality adapters.
eos is just canon mount on steriods. the flange to focal distance may not be the same...i don't know that answer off the top of my head.get in touch with BH
Another excellent place to find Body Mount Adapter is on Amazon... They have way more than just books!
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Question: Will apapter for olympus to nikon lenses work?
I found an adapter to be able to mount nikon lenses to the olympus body, does this really work, any suggestions or recomendations? my goal get longer focal length a cheaper pricing...
the link for the radapter ring is:
http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=110325620691
thanx in advance to all who care!!!
Answer: Yes, they will work. Albeit with limitations. No autofocus of course. No VR. And you must use the aperture ring on the lens*.
*Newer Nikon lenses.... specifically those marked with a "G" following the widest aperture value (eg. f/1.4G)... do not possess this ring. So look for older "D" series models, or even manual focus [AI] lenses.
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Battery Adapter
Searching for Battery Adapter? You"re in luck. This page was made especially to help you find it! It features many different sources to get or learn about them, so be sure to scroll down the page all the way.
First, let"s start by searching Ebay for Battery Adapter:
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Perrott Battery adapter BP 90 Sony type To Anton Bauer Brick style 3 stud mount |
Question: Can I Charge 2 AA batteries with my battery charger (with a car adapter) connected to a 12v 2AH battery?
If I connect my AA battery charger (with car adapter) holding two drained 2600mah AA batteries to a fully charged 12v 2AH Sealed Lead Acid (SLA) battery, will it completely charge them? Do I need a bigger SLA? 7AH perhaps? Is there some formula? Where can I find these formulas?
Answer: 2 Amp-hr means you can discharge at a rate of 2 amps for a maximum of 1 hour. Or 1 amp for 2 hours, or 1/2 amp for 4 hours.
Now your 2600mah are 2.6 amp-hrs each, so you need 5.2 amp-hours to charge them. Which seems like more than the 2 amp-hrs your lead-acid battery has.
But amp-hrs are a strange unit, used only for batteries, for advertising reasons. The actual unit should be watt hours, which is a unit of energy. You can get watt-hours by multiplying by the battery voltage.
So the lead acid battery holds 2 amp-hr x 12 = 24 watt-hrs.
The AA batteries of 2.6 amp-hrs are actually 2.6 x 1.2 = 3.1 watt-hrs
So now it looks better, 24 watt-hr battery to charge 2 - 3.1 watt-hr batteries (total 6.2 watt-hr).
And you would be fine, except for inefficiencies in the system. Specially in the charger, which may only be 50% efficient. The charge-discharge cycle of batteries is 80% at best.
So we actually have 24 x .5 x .8 = 9.6 watt-hrs. But still higher than 6.2, but not by a lot. Given the uncertainties like efficiencies, I'd try it first.
Another excellent place to find Battery Adapter is on Amazon... They have way more than just books!
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Question: Gateway laptop switches on and off from ac adapter to battery when connected, but not when computer is off?
Is it my AC adapter or battery ? When laptop is off and AC is connected the battery charges fine (light shows it is charging correctly). I am afraid to take out the battery and use only the adapter since it turns off and on repeatedly. The battery is in fact old and have not replaced yet but if this is common with adapters or batteries, which one is it?
Answer: An educated guess: there is a problem with the cord (frayed or shorted wire near where the cord plugs into laptop) When you aren't using your laptop, you aren't moving anything. The battery is probably fine as is the charger, but the cord is shorting out.
source: it happened to me more than once, cords you had to wiggle around to make it work.
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