Terms (words mean things):
Laptop and notebook are almost synonymous.
Netbook is a smaller, slower and with less capacity than a laptop.
Tablets have no (physical) keyboard and may come in windows versions, Chrome or other OS versions.
2 in 1s have become popular. They are those that can be converted from notebook to tablet, either by removal from a docking keyboard (may have a hard drive or other add ins in the keyboard) or by folding the keyboard around, such as the HP Envy 360.
I think almost any laptop or tablet will do you, as long as you think hard about pictures. How large are they? How many do you take? Will that increase with traveling more? You don't have to tell us the answers but you do need to decide on storage. Do you edit them? You may need more ram or a higher end CPU if you do a lot of editing. Not so much in just viewing. I suspect you won't need more than 4-8GB RAM, though. If you go Chrome or Surface, you will definitely need external storage. I suggest a small internal HD, SSD if you want it to be faster and external storage for things not used daily. For me, that makes things simpler. External storage does not have to be expensive, if you shop around. On Amazon, you can get get a WD 2TB portable for $70 or a Seagate 4TB portable for $120. For data, music, video or pics, I always think of external drives in pairs. One as primary storage and a second as backup. Plus, I always buy about twice as large as I estimate using in the next year as needs grow.
BTW, you are going to want wireless. If you have not started thinking about it, you need to start. CG wireless is often adequate to non existent. A laptop/tablet internal wireless card is weak. Because of your internal card being weak, you may not be able to use even an adequate CG network, as the access point may to far away from your site. You may want to do a search or start another topis on wireless in a CG. There are additives and alternatives.