On a sunny day (Sun, 31 May 2020 13:51:20 -0000 (UTC)) it happened Martin
Gregorie  wrote in :

>On Sun, 31 May 2020 13:06:16 +0000, Jan Panteltje wrote:
>
>> Same you see with the number of pixels in smartphone cameras.
>> They should start with the lenses, the lenses in those cameras are so
>> shit that my Canon with good lenses and less than a quarter of the
>> pixels gives better detail...
>>
>Thats largely sales bullshit but also has quite a lot to do with high
>pixel counts being a lot cheaper than high quality glass lenses.
>
>I use a Pentax Spotmatic F for many years. Would still use it if
>Ektachrome 64 slide film was available. Bought a Pentax K100 DSLR because
>it could use the Spotmatic lenses and has a nice, big 6MP sensor. Lovely
>camera except that it used AA cells

I have 2 Canon A470 camera, those also uses 2 AA.
I was experimenting last week with an other thing with 2 AAA and replaced
one AAA with a dummy battery, and the other with a Lifepo4 (about 3.2 V
nominal).
Also checked the short circuit current (battery Zi) and it had no problem
drawing 4A..
Batteries are in series.
Works perfectly with AAA.
So I have now ordered some lifepo4 AA and some AA dummy batteries.
The 1500 mAh is not so incredible, but lifepo4 has very low self-discharge
and the slightly higher voltage than 3V (beware max 8 when over-charged)
 https://www.ebay.com/itm/274202865596 1500 mAh lifepo4 AA batteries
 https://www.ebay.com/itm/143604959721 dummy AA batteries
will see how it goes.
With lifepo4 AAA and a dummy batteries things have been working great in my
weather station,
wireless keyboard and also in my dictation recorder.




>and destroyed anything that wasn't
>ludicrously expensive within two charge cycles - and yes, I have high
>quality chargers which are used for more than just charging cameras.

I charge lifepo4 on the lab supply, set voltage and current limit, watch the
time.
An ebay seller ?accidently? did send me a lifepo4 charger a few years ago...
That charger however limits the voltage to about 3.6V, while I go for 4.2 V...
All batteries are still OK.


>Anyway, sometime later I bought a Pentax WG-1 for pocketability. Its
>waterproof, with a tiny glass lens and a 14MP sensor. Its usable, but its
>image resolution is about 3 times worse than the K100 thanks to its tiny
>lens mounted close to a tiny sensor. This is lost of resolution is
>immediately obvious in a side-by-side comparison of pics of the same
>subject.
>
>> But those phones need to be flat...
>>
>Thats by itself is why anybody who's even semi-serious about photography
>needs a decent camera as well as a phone - and may well find that, now
>the phone isn't needed to take pics, that a feature-phone suits them
>better as well as being cheaper than a smartphone, its more secure too.

Yes been photographer since the sixties, did my own (BW) developing and had a
Durst enlarger.
When color came however I had it done.

What I like about the Canons is
 https://chdk.fandom.com/wiki/CHDK
you can program your camera to do all sort of things.

lifepo4 charge curve:

https://www.google.com/search?source=univ&tbm=isch&q=lifepo4+aa+battery+charge+
curve&sa=X&ved=2ahUKEwj4_LLjxd7pAhWR_aQKHfTsA1kQsAR6BAgFEAE

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