Charlie
New member
Charlie said:potholer said:Do *any* [commercial] headtorches (not 'caving lights') give the option of spot and flood at the same time?
no, except for the spill around a spot beam
or the new petzl ultra!
Charlie said:potholer said:Do *any* [commercial] headtorches (not 'caving lights') give the option of spot and flood at the same time?
no, except for the spill around a spot beam
Some people might think having a choice between spot *or* spill is better than having them effectively linked as in a Sten, or an Oldham's main beam.c**tplaces said::
Yes! Most decent lamps do, Oldhams are well known for having a tight spot and good spill, the scurion has both a spot led and wide led, the stenlight can have a tight lense and a wide lense etc etc etc. The MYO to achive its 'brightness' uses a single lense to provide a spot only option, a flip down diffuser makes that wide, killing the spot.Do *any* [commercial] headtorches (not 'caving lights') give the option of spot and flood at the same time?
and myos will burn for 32 houres without having to recharge the batterys.As I said... 16hrs so far
and as i keep on pointing out some of the most robust lamps on the market are made out of plastic infact the vast majority of lamps that i can think of are.My hatred of plastic, it breaks when the shit hits the fan
cap 'n chris said:A full moon is brighter than street lamps* which seem perfectly common in areas where people live, presumably since they are used to enable people to see where they are going.
* Check it out if you don't believe me. Wander around lit streets during a full moon and you'll notice that the moonlight actually casts shadows of the lamp posts on top of the lighting provided by the lamps themselves.
Christian_Chourot said:cap 'n chris said:A full moon is brighter than street lamps* which seem perfectly common in areas where people live, presumably since they are used to enable people to see where they are going.
* Check it out if you don't believe me. Wander around lit streets during a full moon and you'll notice that the moonlight actually casts shadows of the lamp posts on top of the lighting provided by the lamps themselves.
That doesn't actually mean that moonlight is brighter than street lamps. Think about it.
Light is addative. The street light doesn't get out of the way to make way for the bright moonlight, the moonlight just makes the bright areas brighter and doesn't reach the part shaded by the lamp which is close to the ground and gives a sharply focused shadow.
Take this example: I just cast a shadow of a lamp containining a 40 w florescent bulb using my crappy doctors pen torch which has 1AA powering a tiny incandescent bulb. Which do you think is brighter?
edit: In fact, I just cast a "shadow" of the bulb itself on the inside of the shade.
c**tplaces said:Yeah bright! I hate seeing stuff, its over rated. I love to feel my way round instead, I can make out a crane and a crab-winch by feel and the writing on the wall well its amazing the old miners used brail and calcite formations feel better then they look...
If you can lie down and be able to see your toes with a Petzl Myo XP then I would say it must be a bloody good light.
Either that or you have lost some weight since your avatar picture!
I think so. I love mine. Got a second as a spare as well.tony from suffolk said:Are they any good for caving?
c**tplaces said:people like LesW and Cap 'n Chris do it all the time.
tony from suffolk said:I finally managed to try out the Myo on a rather brief trip in Swildon's. My caving companion couldn't make it so I decided on a quick solo trip in the upper series.
Off I trolled, ammo tin in hand with spare light within. I kept the light on beam, and as I fell off the slab on the first drop in the wet way I was impressed with the way the light stayed put on my helmet. As my head smashed into the walls and I bounced around like a demented pinball, I was reassured to note the light appeared undamaged, a good test of its durability.
As I laid on the jaggy boulder floor staring upward and paralysed with pain, the light made a good fist of illuminating the chamber. Once I'd established my neck wasn't broken I managed to grovel out of the water, which had meanwhile nicely tested the headset's water resistance.
It's certainly a very bright beam. Because I'd injured my wrist I didn't feel inclined to flip up the diffuser. Using this beam I was able to notice the simple bypass to the slab climb, which in my excitement I'd completely forgotten about on my speedy descent. How I laughed!
Anyway, I got out eventually and managed to struggle over to the car. Luckily I just cut my arm, sprained my wrist and left foot & torn my knee ligaments. The light's a good bit of kit though!
cap 'n chris said:Beg to differ: you cite three caving trips. Your description of the MYO failure also sounds like it had got wet while in use and you had not dried it out.
MYOs with several hundred caving trips including sump dives (although the light is not supposed to be waterproof) are still going strong: the secret? - dry them out afterwards.