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Daylight bulbs for viewing prints

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    23 Feb 2009 - 5:30 PM

    Hi, Iíd like to buy a daylight bulb to put in a desk lamp or similar in my workroom, itís a rather dark room and I have trouble viewing prints I print off, obviously it makes things worse that the lamps I have are tungsten or halogen.

    Trouble is Iím unsure what to buy, a quick look on the net and you come up with daylight bulbs with various fittings but they seem aimed at sufferers of seasonal affective disorder. Common sense tells me that they should be equally suitable for viewing prints but am I wrong? Maybe there is some special knowledge that I need, or something specifically photographic. I did see a little desk lamp in the colour management section of Morris photo but itís very expensive and probably too specialist/unnescessary

    Any advice gratefully received, thanks, Ruth

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    pennyspike  112068 forum posts United Kingdom29 Constructive Critique Points
    23 Feb 2009 - 5:40 PM

    Craft shops used to sell them, but I'm not sure whether they're still available.

    rictac2  10150 forum posts England
    23 Feb 2009 - 5:43 PM

    Hi Ruth

    If your desk lamp is a screw fitting rather than bayonet, we (PhotoSkill) can supply a daylight output CFL (Compact fluorescent Lamp; PM me if you like.


    geoffash26  102506 forum posts United Kingdom
    23 Feb 2009 - 6:20 PM

    As Penny says go to a craft shop and they call them craft lights
    available in 60w and 100w BC & ES if you really get stuck give me a PM I sell them at work but they're not the best object for posting Smile

    MikeA  91174 forum posts England
    23 Feb 2009 - 7:31 PM

    I find the 30W good see link. Also use them in most of the house, much better than the yellowish light from most energy savers - 6500K colour temperature.
    link here

    or Colour Confidence viewer as another option.

    link here

    Last Modified By MikeA at 23 Feb 2009 - 7:32 PM
    dcash29  81908 forum posts England
    23 Feb 2009 - 10:43 PM

    Why not visit your local electrical wholesaler.

    Purchase a fitting and an Osram L 18/865 Lumilux cool daylight

    These are the lamps used at my photographic society

    Last Modified By dcash29 at 23 Feb 2009 - 10:45 PM
    23 Feb 2009 - 11:17 PM

    I use a two-tube desklight that uses D65 fluorescent lamps that are marked F15W/55.

    Be very careful when choosing "daylight" lamps because a lot of the aren't. Try to see this month's issue of Imagemaker, the SWPP mag.

    dcash29  81908 forum posts England
    23 Feb 2009 - 11:27 PM

    The tubes i mentioned are 6500 Kelvin Fluorescent tubes, designed to provided standardised lighting for colour critical environments such as pre-press and photography.

    Which simply replaces the fluorescent tube in a standard fitting

    Last Modified By dcash29 at 23 Feb 2009 - 11:29 PM
    brian1208 e2 Member 1110269 forum postsbrian1208 vcard United Kingdom12 Constructive Critique Points
    24 Feb 2009 - 8:39 AM

    They had some in my local Sainsburys Homebase last week - (I've stocked up against the day the EU snaffles the last of them in exchange for their "Mercury Bombs" Smile

    rictac2  10150 forum posts England
    24 Feb 2009 - 10:50 AM

    Osram 865 tubes are 6500K, this is true, but there is a lot more to it than that.
    They are not a continuous spectrum, they are cold 'northlight' and colour reproduction is not as good as it could be.

    Colour temperature 6500 K
    Colour rendering group 1B
    Colour rendering index Ra 80 ... 89
    Light colour 865

    Osram Lumilux delux 954 tubes available from about 18W - 55W are just about the best available regarding consistent and accurate viewing (or studio lighting), with a continuous spectrum and better (less blue) temperature but you would need a 2G11 fitting:

    Base / Cap 2G11 4 pin
    Colour rendering group 1A
    CRI 95
    Colour Temperature 5400 kelvin

    I could dig out the spectral output graph of the 954 for anyone interested.

    I know this is probably beyond what the OP would be looking for owing to the 2G11 fitting, but thought it would be of general interest too.
    Tungsten 'craft lamps' are not accurate or consistent colour, run hot and use 4 - 5x more electrickery per lumen output.


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