All Forum Comments
Comment by K10D posted on WTB (or borrow?) Pentax Power Pack M at 02/07/2011 - 11:03
No quick release connectors are used on Sunsnipers.
As you say, in another situation, things could be different.
Since buying them, they have transformed how I use my cameras. Fast up to the eye is an understatement.
Best regards
Comment by K10D posted on Neck Strap recommendations at 02/07/2011 - 02:09
So one suggestion, buy this 24v DC wall cube link and from Maplin, buy an LM317T and have some one make this link for you. It's got to be connected mid cable between the wall cube and the NiCad pack, i.e. in series. So the leads will need changing for the Pentax plugged lead.
The current needs to be set @ 10mA as the NiCads in the pack are 100mA Hr cells. The value of R in the circuit would be 125 Ohms, so a 120+4.7 ohm would do or a 100+22 ohm is close enough. Maplin also sell small ABS project boxes so it will look tidy.
IF the LED is used as per the circuit, then it's current (via series resistor) will need to be taken into account. Better still is to use an LED in series that will handle 10mA and it proves that charge current is flowing. Also add a 1N4001 diode in series with the output to act as a blocking diode so that the pack can't "feed" the regulator circuit if the mains is off.
Very simple way of solving your requirement.
Best regards
Comment by K10D posted on WTB (or borrow?) Pentax Power Pack M at 02/07/2011 - 01:54
Comment by K10D posted on Wanna buy a camera.... at 01/07/2011 - 16:25
"Ricoh will take over Hoya's domestic and overseas production bases, employees and Pentax brand".
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Comment by K10D posted on Ricoh to buy Pentax at 01/07/2011 - 08:12
Comment by K10D posted on Ricoh to buy Pentax at 01/07/2011 - 07:19
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Comment by K10D posted on Slutwalk 2011 - Piccadilly, London - VOLUME TWO at 29/06/2011 - 08:14
Comment by K10D posted on Wana buy a lens? at 26/06/2011 - 12:52
Wow... everyone has got something to say about the Q.
So in another word pentax is putting some rubbish on the market trying to scam some people's who don't care and do not understand photography money.
It's not a product for me and I'd rather see the monies going into a flash system or longer fast glass but where do you write this off as "rubbish"?
Best regards
Comment by K10D posted on Pentax launch the Q at 26/06/2011 - 02:51
I think your subject and lighting are bound to show any tiny flaw in the K5's sensor at these settings.
Here's a test shot at 1/200th, f4, and ISO 51200 I made a couple of nights ago. The light was from a low power energy saver bulb.
I'm quite happy that if I ever needed this extreme setting, I would get a shot I could use, where others will fail, unless they also use a K5 of course.
Best regards
Comment by K10D posted on K5 High ISO banding? at 25/06/2011 - 16:42
Anyway, my thinking is why not just buy a multi cell NiMH/NiCd battery charger? The Power Pack M has 12 x 1.2 volt cells at 110mAH each (14.4 V and 1320mA) which seems well within the range of devices such as the two at the top of this page: http://www.strikalite.co.uk/prodcat_type/10/ALL/0/Battery_Chargers.html (other websites and chargers are available).
They claim to charge "... 2.4volts up to 14.4volts (2-12 cells) worth of Ni-Cad / NiMH batteries so it will do anything from 700mAh up to 5000mAh cells."
This would also give you additional flexibility should you come to replace the batteries in the Power Pack M with higher capacity ones, 1/3AF NiCd (225mAH) or 1/3AA NiMH (280mAH), at some point in the future.
If the pack is rebuilt with new cells then the C/10 rate still applies so 23mA and 28mA respectively. If you charge at a higher rate and forget to disconnect or don't use an automatic type charger, you will heat up the pack.
By the way,(14.4 V and 1320mA) is not correct, the capacity of same type series cells remains the same as a single cell so you get 12 x cell voltage at 110mAHr.
Also, fully charged NiCads typically sit at 1.35v so you have a full charge voltage of around 16.2 volts (not an issue).
Whatever Nicads are used, they can be fast charged although this application does not warrant that. In all cases, charging above the C/10 rate would require an auto cut off charger, preferably with delta V detection.
It's much easier and safer to charge overnight and not worry about cell/pack damage.
If you want the latest technology, five of these
wired in series with these
easily fit the battery case and can be safely charged with a LiPo auto charger. They never self discharge.
As for the 11mA charger:
The LM317T is shown wired as viewed from the front of the device.
Best regards