How do you change lenses on a trip?

I am all for a small kit with the right bag, I find a backpack useless to shoot out of but you may consider one of the many sling options too. An R strap may also be something to consider and for bags look into think tank they have some great options with various bags, pouches or holsters that are really well designed.

When I am out walking around, I usually have my camera and three lenses with me in my ThinkTank Urban Disguise 60 shoulder bag. Typically the 7D and 15-85 is in the center of the bag,(or around my neck) and my 70-200 is in the bag on the left side with another lens on the other side. Everything is stored with the lens facing down.

To change a lens I first twist off the end cap off the new lens and place the cap somewhere in the bag. I then hold the camera with my left hand, remove the lens with my right hand, and place it in the empty compartment. Then I take out the new lens and mount it on the camera. It just takes a second to replace the end cap on the lens in the bag, and then start taking photos with the new lens.

This is all done standing up or even while walking.

I always recommend changing lenses by hand.

A secure appropriately-sized wheeled or backpack bag for traveling to and from (never gets checked). A photovest or a proper-sized Domke shoulder bag for on the shoot. The vest can worn on the plane, the Domke bag can be packed flat in checked luggage. The rest is practice switching lenses on the move.

I usually carry my gear in a LowePro Flipside backpack and I change lenses in it. If I happen to be in a very dusty or sandy place, I just dont.

Wilt wrote in post #11903440
It is the single reason why I don't like the idea of photo backpacks.

Yep,, backpacks are a pain when on the move.. I use a messenger type bag or a sling bag..

ThinkTank Rotation 360 might come in handy for you. Not your typical backpack and not necessarily for everyone. Its a backpack with a rotating harness. Really handy for on the move applications when you need to carry and use multiple items. Check it out.

I've got a Lowepro Flipside 400 AW which I normally put on the floor while I'm shooting - but if I'm wearing it at the time I just slip the shoulder straps off, slide it around to my front (it's still held up by the waist belt) and open the compartment. The opening is on the bit of the bag that's against your back so it's easy to get at.

I used to use a Lowepro Rezo (shoulder bag) but it's not big enough for me anymore and it was too heavy on one shoulder so I had to change to a backpack. There's only a marginal speed loss getting at stuff that's in the Flipside backpack and the process of doing it is easier as it acts like a table while it's open.

I have a ThinkTank Rotation 360 which lets me access two lenses in the lower compartment without removing the backpack. It's fantastic. You pay for the ability, but it's worth it to me.

If I wear my Lowepro Deluxe Utility belt, it has a pouch on each side for a long lens and a wide lens. I can change them on the go. In either case, I don't have to remove a pack or dig into a bag to change a lens quickly.

Same is true on both systems to add a Speedlite or change a filter.

Slingshot with rearranged, similar to featured HERE, dividers that allow access to lenses/stuff w/o removing the bag.
Flipside works too.

I love my Kata T-214 Torso Pack for situations where not only quick-draw-and-shoot is crucial but also for quick change of lenses without having to put the bag down and without having to worry about lens handling mishaps.

https://photography-on-the.net/forum/showthre​ad.php?t=566336

Thanks all your suggestions. I will transport my lenses (and the netbook) in the backpack, but will take the shoulder bag on the trails. Boy I am glad I asked!

While actually moving, the shoulder bag is definitely the way to go. I used to use a backpack but hated always having to put things down.

MCAsan wrote in post #11904686
two things to minimize swaps:
use wide range zooms
have a second body with other lens mounted and ready

On safari last May we had our 7Ds hooked up with our 100-400s and our 40Ds hooked up with rented 500s. That combo plus a 1.6x extender gave us a practical range or 100-850. No time to do lots of lens swaps on a safari...and every time you do a swap...you expose the camera and lenses to dust contamination.

YOU say Truth