What's going in the backpack...

This is what I will be carrying into Yosemite.
This does not include any food items I plan on bringing. So lets take a look:

1. Extra batteries. You never know when you will need them. My GPS along with my grip on my camera all take AA. I use Enelope rechargeables. I have 8 in packs of 4 and then I have the grip carriage that holds 6 and slides into the grip on the camera.

2. 7d Manual. You would be surprised how many times it takes a quick peek to remember how to set something on the camera. I bring them just in case. Sometimes I don't need them, and sometimes I do.

3. Extra compaq flash cards. The 7d has a 16 gig card in it. I also carry a spare 16, 8 and 4. You never know when you might need it. Plus I have been places and a card started acting up...like DC at the Cherry Blossom festival. I would have been dead in the water without a spare.

4. Lens cloth...just in case something gets on the lens and you need a quick wipe.

5. Blackberry. This is what I will update my blog on and send pictures with. Also has a GPS in it. Although I don't plan on using that function. I'll need the battery to send updates. Last time I was in the park with my phone, I had pretty decent service. We will see.

6. 7d gripped with two canon batteries and a compaq flash card already installed. Currently has the Tamron 24-752.8 on it.

7. PN-40 GPS. This thing does quite a bit. I have USGS quad maps, Color aerial imagery, aerial imagery, and satelite imagery. This thing is a compass, and it also has all of the trails on the maps. I've personally downloaded and cut these maps and installed them on this device. This will also record where we walk, how long we walk, and then I can match the tracks up with the pictures and have exact GPS coordinates on where each picture is taken. Very handy tool. It also has sunrise and sunset information programmed in.

8. Hand held trail maps. You never know when you might need them or need to look at the "big picture".

9. Camelback 70 ounce bladder....this thing will be filled with gatorade.

10. Is the backpack itself. Probably be looking at getting a new one maybe after this trip. Gear is getting bigger than the pack itself.

11. Sigma 50-500. This thing has been a workhorse for me in Yosemite. Most people would not try to hand hold this thing because of its size and weight. I have been fortunate to get good results with this lens. Wouldn't leave home without it. Nothing matches the range.

12. Peleng 8mm. This will be new to Yosemite. Extra wide angle fisheye lens. Hope to get some decent stuff with it.

13. MPE-65 macro. I wouldn't normally take this lens with me on this type of trip, but being out in the wild and there might be an opportunity so rather than not take it, I'm bringing it. It more than likely won't get used, but you never know.

14. Tamron 18-270. Not quite the range of the sigma but still a nice range. Its a light lens.

15. Sigma 10-20 wide angle. Must have lens for Yosemite.

16. Point and shoot camera. I usually take quick pictures with this or shoot video on it. The 7d however shoots video so I may end up using that to shoot it.

That should just about do it. All I need to add is food and beverages. All together, it probably weighs 25-30 pounds.