Hi. Just a little background to my problem. Although a relative beginner, I did a fairly good beginners coarse and have at least a beginners understanding of the exposure triangle, and I tend to use Manual mode to hopefully try and improve, and get my eye in. I realise this may be the main problem!. About twelve months ago I upgraded to an "as new" EOS 750d which seems to work as intended, and lens wise, tend to use the standard Canon kit lens (18-55), a 50-250 or a 70-300 (yes, it was probably a mistake to own both of these low level lenses at the same time, but you know us beginners!) or a Sigma 105 macro lens. I don't really know my specialist subject yet, but seem to prefer to photograph the native fauna and flora, out doors. Birds and insects basically. I generally take the kit lens and one of the longer lenses out and about, and realise that my lens choices will be a contributing factor too. I will take a tripod, which I don't mind using if I am trying to take insects/foliage etc, but probably the majority of shots are taken hand held. So, down to my "issue". No matter the lens or light conditions, even on a bright, sunny day, my ISO always seems to need to be way higher than I expected it to be. (Certainly when compared with just about any image I see printed in a photography magazine!) Admittedly, I am often skulking away in the shade under foliage, but even shooting out into the sunlight, it's not uncommon for me to need at least 400 ISO. Shooting birds on the edges of the trees in these conditions will often see me needing 1600 and anything fully in the shade can be 3200 plus? Dull days or lower light sees these figures go higher still. I am not using super fast speeds or trying for lots of depths of field either. Is this "normal", as it doesn't seem to be? Taking pictures inside the house, hand held under artificial lighting, I would expect the minimum ISO I could get away with to be 800 even in the brightest room. Is this normal? Again, from my limited knowledge of reading magazines/watching Youtube videos, it doesn't seem to be? If I use a tripod and very slow speeds for inanimate objects, then obviously the ISO falls to what I think should be "normal" levels. I am fortunate that I could possibly splash out while the sales are on, and upgrade to a new (mid range - say 7d mk2 - 90d price range) model, but I have a suspicion/fear that the fault is with me, and not the camera. If anyone can decipher that rambling tome/needs any more info, and has any thoughts, I would gladly take them on board. I need real world experience from Canon users, as watching generic "How to" videos is possibly confusing me more.....I also accept I may be becoming obsessed with an issue that I don't actually have! Thanks for reading. Paul.