In reply to Dave Dear:
> (In reply to UKC Articles) Excellent and interesting article, Alexandre, with fantastic images. A few things occurred to me whilst reading it:
>
> 1) I'm interested that you only took 2 batteries with you. I went to the Trans-Himalaya recently, with nothing like the extreme cold that you had in Peru, and I got through nearly 5, fully charged, batteries for the Lumix G1 in three weeks. Did you have a solar charger or did you have a power supply?
I had neither. The longest I have been out without access to power supply was 10 days, and 2 full charges were more than enough. One reason for that is that DSLR batteries tend to last much longer than compact ones, or even micro-4/3, especially since you don't have to use the LCD screen to frame. I am also very careful about my power consumption and rarely review the photos on the screen after taking them (only checking the histogram/sharpness if I have a reason to be worried).
> 2) Good advice re.carrying system, I've been using the Crumpler shoulder bag recently, which has a leg strap as well (which I've never used). This has room for a camera attached with zoom, and compartments for spare battery, memory card, filter etc.
Different people will like different systems, but whenever climbing is involved, I feel that belt systems are really the way to go.
> 3) I'm surprised you recommend a UV filter, as digital sensors, unlike film, do not need it. The sensors already compensate for the UV wavelengths, and in fact it is probable that they work better without blocking those wavelengths. It is may be better to use a clear protection filter, ie. scratch proof Tiffen clear filter (expensive). However, I would recommend, in certain circumstances a Polarising filter, you can always 'set' it at the beginning of the day (or previous day).
I basically use my UV filter as a clear protection filter, not for its UV capacities. I tend to disagree about polarising filters, they are more of a pain than an advantage in most cases, and you need to always pay attention to what angle they are rotated to.
> Good point about taking portable Hard Drive for downloading, I'm looking into it!
I can really recommend the Hyperdrive disks, they are much better than pretty much everything else.
> Really enjoyed the article and your photos, thanks
Glad it was useful.