Light comparison -an idea

Discussion in 'Commuting' started by Mister Paul, 1 Nov 2007.

  1. Mister Paul

    Mister Paul Legendary Member

    There's a lot of talk about front lights and brightness at the mo. But it's very difficult to make comparisons, given that manufacturers give photos, wattage lux and lumen values.

    So, hows about-

    We do our own comparison? If we can post pics of our own lights, taken under as near identical as possible circumstances, we can then post them up on this thread, which will make CC the site of the best ever comparison.

    Some ideas-

    Take photos of at least 2 lights you have. That way, it will hopefully give us more of a control over differences in camera quality, exposure etc. For example, I have a Cateye EL500, EL530 (thanks bonj!) and BLT Ozone 21ne. If I post pics of all three, and someone else posts two different light pics which include say an EL500 in their pics, we can then compare the 5 lights.

    Use fresh batteries.

    I suggest a pic of the light throw from your handlebars and horizontally aimed at a wall, say, 3m ahead. In the dark.

    Could we make this work? I know if we could it would be very useful. And we could always use ways of tempting more people onto the site.
  2. alecstilleyedye

    alecstilleyedye nothing in moderation Moderator

    that makes us sound such an exciting lot eh?
  3. domtyler

    domtyler Über Member

    Sorry I'm washing my hair tonight.
  4. OP
    Mister Paul

    Mister Paul Legendary Member

    Why do you think I invented my alter ego known as Bonj?
  5. bonj2

    bonj2 Guest

    only thing is to be totally fair it would have to be in an equally dark place, and with an equal camera. not sure how much it would matter if not though, would probably still be useful.
  6. domtyler

    domtyler Über Member

    Would we be allowed to use Photoshop?
  7. OP
    Mister Paul

    Mister Paul Legendary Member

    That's why I suggested using more than one of your lights. That way, you could compare the shots of the identical light and use this to take into account differences in location, light levels etc.

    I'll do mine anyway when I get time and post them up.
  8. Arch

    Arch Married to Night Train

    Salford, UK
    I think it's a good idea - to be honest most people probably aren't bothered about the smaller differences that might be due to camera and location differences, but would like to see a general comparison.

    I'm assuming the picture is taken without flash... And it would be good to try and recreate very similar locations. Perhaps if you post something and give us an idea of how dark it is, we can find places that match it fairly well.

    How about rear lights as well?

    To make it even more useful, a few words on how easy the lights are to transfer between bikes, carry off the bike, operate on the move, reliability etc...
  9. bonj2

    bonj2 Guest

    hmmm...yeah, I see.
    well I'll post pics of my lights, a smart polaris 2 (3 led) and soon to be getting a BLT firewire.
  10. magnatom

    magnatom Guest

    I've gone and purchased this light. As soon as I get it I will do a comparison with my cateye (el-500 I think)
  11. doyler78

    doyler78 Well-Known Member

    Co Down, Ireland
    Ok guess I'll go first then:

    Cateye EL-530 first up using new duracell plus batteries:

    This is another shot this time standing well behind the light:

    This is the latest pic of these lights. The settings used are: f-spot: f/2.8, shutter speed: 1/4, iso: 400, white balance: tungsten. I could brighter pictures using other settings however they completely bleached out the ayup pics and this was the best I could get where you could see both pics with some detail. Hope this helps:

    Next up my new AYUP using standard li-ion 6 hour battery:

    and the is the update for the ayup from behind the light:

    Manual settings version of the pics. Details described in cateye section above.

    Can't fathom how to put a picture up directly on this reply. Tried image tags, file uploading but neither works so can only provide links to flickr.
  12. OP
    Mister Paul

    Mister Paul Legendary Member

    That's the kind of thing we need. Thanks. Now if only everyone had access to an EL530 we'd be able to get some good comparisons.

    I've just spent 30 minutes out in the garden faffing around in the dark. All I got out of it was a bunch of blurry photos of nothing much.

    I'll have another go over the weekend.
  13. andygates

    andygates New Member

    I hope to get a comparison of a Lumi 12w halogen and a 1920s carbide lamp early next week...
  14. domd1979

    domd1979 New Member

    My EL530 effort....

  15. doyler78

    doyler78 Well-Known Member

    Co Down, Ireland
    That looks way brighter than mine - way to check mine out again

    Adding extra photos to my original post as there is a difference in how the el-530 shows up depending on where the camera is place when photographed. Don't ask me why.

    Thought it better to update here. Not really technical with my camera. They are just things you point and click but your suggestion below would probably explain it.

    Don't really want to overtake the thread with lots of different replies so maybe domtyler might see this here - I didn't do that because would that not defeat the purpose of the thread?
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