Monobod
'Phantom' of the forum!
Reged: 03/04/2003
Posts: 5672
Loc: Just West of Norwich, Norfolk
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I am having problems with 'normal' lightbulbs making my prints look an odd colour. I do a lot of my printing at night and have to wait until the morning daylight to see them in their true colours.
I am considering buying a low energy 'daylight' 100 watt equivalent bulb for my study. Have any of you done this and was the result to your liking. The other alternative is the normal 'daylight' bulbs that have blue glass and these are used in our club's viewing stand for competitions.
The low energy type are about £10 each, so I don't want to invest if they are not very good.
Which is best?  Thanks.
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David.
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Photos hosted by Flickr.
www.flickr.com/photos/monobod/
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I see the world thro' a viewfinder, but the world watches me via CCTV!
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crosskid
newbie
Reged: 01/03/2008
Posts: 10
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The low wattage bulbs are okay but you must make sure that you get one that is the right colour temperature for your viewing conditions. I use one that is specified to 6500K which is the same colour temperature as my screen is set to.
An alternative is a "craft bulb" which is a tungsten bulb which has blue glass that corrects the light to daylight, do not buy a painted bulb, buy one with blue glass. I have used these in the past but now use the low wattage bulbs for preference.
Hope this helps. 
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Old Git still trying to cut it
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Monobod
'Phantom' of the forum!
Reged: 03/04/2003
Posts: 5672
Loc: Just West of Norwich, Norfolk
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This one is the one I am considering, meets all of the criteria.
6500k light bulb
Thanks for the reply.
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David.
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Photos hosted by Flickr.
www.flickr.com/photos/monobod/
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I see the world thro' a viewfinder, but the world watches me via CCTV!
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John_K
addict
Reged: 03/09/2006
Posts: 546
Loc: North Yorks
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I have given up using 'daylight' blue bulbs because they vary sio much. Instead I use one of the camping 'head torches' which use LED's as a light source and they are more accurate by far.
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Meredith
enthusiast
Reged: 23/10/2006
Posts: 250
Loc: Coventry, UK
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I have one of these: Linky. It has a higher CRI than the one you linked to. I think it is great. When I first turned it on the light seemed very odd after being used to normal bulbs which are a lot warmer.
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Meredith Lewis
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beejaybee
Marvin
Reged: 18/07/2007
Posts: 4245
Loc: Really Here In Name Only
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Quote:
Instead I use one of the camping 'head torches' which use LED's as a light source and they are more accurate by far.
Consistent, maybe, but accurate, I doubt.
An alternative might be a standard tungsten bulb used with a Wratten 80 series filter.
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Monobod
'Phantom' of the forum!
Reged: 03/04/2003
Posts: 5672
Loc: Just West of Norwich, Norfolk
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Thanks for the info, I will order one on the web if I cannot find one in the local shops.(Unlikely probably). 
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David.
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Photos hosted by Flickr.
www.flickr.com/photos/monobod/
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I see the world thro' a viewfinder, but the world watches me via CCTV!
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Supersonic
enthusiast
Reged: 11/07/2006
Posts: 263
Loc: Surrey
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I use one of these and it's way better than normal tungsten for checking prints (from my Epson 3800).
Don't think I could go back now!
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Regards,
Pete
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Supersonic
enthusiast
Reged: 11/07/2006
Posts: 263
Loc: Surrey
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Forgot to say: I use it without a shade (what's the point as they colour the light?) and I bought mine from Guildford Art Centre on Quarry Street (off the high street, past the Star Inn pub but on the other side of the street).
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Regards,
Pete
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Monobod
'Phantom' of the forum!
Reged: 03/04/2003
Posts: 5672
Loc: Just West of Norwich, Norfolk
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I have ordered a daylight 20W (100 equivalent) from lightbulbs direct. It is full spectrum 6500k and should be here tomorrow, hopefully.
I have a Ikea shallow tin conical shade with white on the underside, so it should be neutral.
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David.
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Photos hosted by Flickr.
www.flickr.com/photos/monobod/
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I see the world thro' a viewfinder, but the world watches me via CCTV!
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John_K
addict
Reged: 03/09/2006
Posts: 546
Loc: North Yorks
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There are available bulbs (sic) which use multiple white LED's. I have one I bought in Germany 3 years ago and the colour balance is such that I can photograph still life, copy etc with the digital camera set on direct sunlight and the balance is perfect.
I also use a head torch which has LED's when I am in the darkroom for assessing colour balance on RA4 colour printing. It is far mor accurate than so called daylight blue bulbs. You can buy them at almost any hardware or outdoor shop ranging from about a fiver to fifteeen pounds
I have seen them (the bigger bulb type) advertised recently over here set up for copying purposes, but can't remember where. Possible in a Practicle Photography magazine that I have ditched.
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