What is your biggest, or most stupid photo mistake

[EdmundH]

I think the daftest mistake I've made recently was to replenish the colour developer slot in my Nova tank with 100ml of Bleach/fix. I hoped I might get away with it, but no, that was 2 litres of fairly new developer instantly deactivated. Luckily I had plenty more concentrate in stock.

[Nat Polton]

I was at a friends house taking photos of the new baby, and proud mum and dad.
Background and three flashes set up nicely.
So that I would be clear of the light stands in the small living room I put a 2x convertor on my standard Bronica lens.
Took a couple of readings with the flash meter, and set the aperture.
A lovely couple of rolls taken.
Trouble was I forgot to take account of the convertor exposure factor.
Two rolls of colour print film that I didn't even bother developing.
As a warning,my 2x convertor now has a sticky label on it giving the conversion factor prominently displayed on the barrel.
One big lesson learned though.
Cheers.

[Terry S]

Originally Posted by Richard Gould

Made another one yesterday, poured out developer, then instead of pouring in stop I poured in fixer, then after a few seconds poured in the stop for 3 minutes, poured out the stop, did the Ilford wash cycle and put the films up to dry,
Richard

But did you manage to get them back into the fix Richard? And did they turn out well in the end or not?

Terry S

[Richard Gould]

No, it was after washing when I opened the tank that I realised what I had done,and they were gone, If I had realised before opening the tank I would have re fixed them, but I hadn't fixed long enough to save them, they were stopped but still went black before my eyes I still blame Donald J Trump
Richard

[Terry S]

Apart from some of the already mentioned ones, my biggest mistake photographically, is not having a camera to hand over the years, and so missing many opportunities of what would have made great pictures.

I now try to remember to take some form of a camera with me when out and about, with P+S cameras being the smallest and easily pocket-able, with the least number of controls to get flustered over, if a picture arises.

As is said, 'The best camera, is the one that you have on you'.

Terry S

[Andy M]

This afternoon got a bit sticky.

One film to develop.
Chucked the tanks second reel out and put everything I needed in the changing bag. So I thought.
Bottle opener on the cassette, cut the leader off, now where's the reel.
Ah, can't find it.
Well there's one on the draining board, ooh and another in the box of bits of stuff I aren't using today 😩
Doh 😣
Stuff the film in the tank and then open the bag and put a reel in.

Turned out right in the end

Andy