BobIn wrote:
I use a 128GB SD card for my Nikon Coolpix P900, Sandisk Extreme sdxc with 90mb speed.
I go on 3 week trips and shoot around 8000 pictures plus video at National Parks.
Next week is Badlands, Glacier, Yellowstone and Theodore National.
On a 10 mile hike, I don't want to stop to change my memory card.
Any comments or expert advice on this strategy?
Here is my strategy, right or wrong it might give you an idea. In my D7100 I carry 2 64gb cards. Plus 3 or 4 spares in my bag. Even if my camera only had one slot I would still not use anything bigger than 64 swapping out cards is a good practice. I shoot raw and I very rarely fill a single card. For sports I never put more than 1 game on a card. Shooting multiple games in a day at a tournament I swap out cards in between games. Shooting Street usually one card per day will be good enough. But I will still swap out at least once. I do this to prevent putting all of my eggs on one card in the event of failure but also to make cataloging easier. If I am doing portrait work then I make sure I download all images of a model before the model leaves to make sure the images did not corrupt due to a bad card. If it did I can re shoot right away. For a trip like yours I would change out at least daily or by location, for example if I were in NYC shooting in time square that would be one cArd then if I went to Central Park that would be another. If I were doing what you are doing I might change them by morning and afternoon. That way if I want to locate a particular image it would be easy I could remember if I shot it on Monday in the morning or afternoon and it would save me from having to go through all the images for the day. So to answer your question directly. You already own a 128 , I would buy at least a couple more cards most likely 64’s but I am not sure how much video you shoot and I would be swapping out at least once during the day.