If the slate device is the type I'm thinking of, then you wouldn't want to be doing any editing on it.
reason: screen will be useless for decent editing .. is it calibrated at least? .... probably not. And, if not, it's almost certain to be of a lower quality TN type screen .. on a tablet .. is a dubious prospect for editing images anyhow! The dubious nature of the tablet's screen is in it's inability to reliably show you a consistent and quality rendering of the files you want to edit.
What you are best off doing with the tablet(as you already have it) is:
Use it to transfer camera images onto an external backup HDD. I doubt that in 6 months you will fill a 1 Terabyte drive, but if you do .. then good!
Install a quick file browser for sorting through your images as you collect them.
I'm not yet well versed in using DPP(
Canon's software), but I have used it (in)frequently enough to know it's a good candidate for use as a
Canon raw image file browser.
What you would want this software for is simples! .. sift through your images as you collect them(on a daily, hourly or whatever basis!!) and more importantly ... RANK them!
That is, if you shoot two or three version of (eg.) Kings Canyon that look identical other than for a few teeny differences in
light/
sharpness/colour/
exposure/etc .. then you rank the images for an idea of which one is better(than the others) .. or are they all the same. The point is, with ranking, that you can see in a quick glance which images are the ones you REALLY need to keep.
So as you rank them with a stars or numbering system .. let say 5 stars is your best image work, and 4 stars is just below that .. etc, as you view your files with your image browser you can see these stars, filter them based on this rating system and sort through them because of that.
This makes deleting files much easier for those times when you need too based on a shortage of space.
Another software you may want to look into is Fastone's FSViewer(
google it).
It's very small, and very powerful in the way it works. Many options within to allow you to view and sort images.
It's only issue is that it's quite bad at converting
raw images into other formats.
But for viewing lots of images .. no matter the size of the image, it's one of the fastest browsers available .. and works very well on a system with limited resources.
I use it mainly on my Gigabyte tablet(very low spec Atom processor, 2G ram, etc) .. and it's just a touch quicker to render images than my other favoured software for speed and use ..
Nikon's ViewNX2(this is
Nikon specific for me tho).
But if you want to sift through a collection of shots briskly say to view them at 100% for the purpose of assessing detail/
sharpness/etc .. then FSViewer is about as good as it gets for a hardware limited device.
So your
workflow for the trip would be something along the lines of :
Shoot -> connect camera or card to reader via slate device and transfer to external device via Slate device. Don't transfer images directly onto the slate's drive. The purpose of the external drive is to store all the trip files you acquire.
As you collect images, try to sort through them and rate them on the day you captured them(obviously as is possible) .. during some down time.
Leaving this step until later .. say 6 months later at home, once the trip is all done .. leaves you exposed to forgetting lots of detail info about the images as you acquire them.
The ability to add keyword data to them should be a high priority at some point as well. That is, to catalog them in some way. While it's not imperative, it sure is a handy
workflow aspect to consider at an early stage .. rather than leave it for a later date.