Homenext
page
Enlarger Illumination -Cold Light Heads or Cold Cathode
These
are essentially diffusion enlarger heads which use coiled cold
light tube, (Fluorescent tube) rather than a conventional light
bulb. Because the light from them is very blue rich, which is
the area of the spectrum that B&W paper is sensitive to, the
exposure is relatively short. Due to the inverse square law, this
is ideal for using when making large mural prints which need a
longer exposure . With this system of lighting, there is also
very little heat build up which can be very beneficial with larger
negatives in terms of negatives buckling or popping. |
Mouse over to view roll over image The inside of a cold cathode 10x8 enlarger Mouse over to view roll over image |
A
5x4 Besler enlarger with a cold cathode head. As with many enlargers,
the head can be removed and replaced with a condenser head. |
|
| The
coiled tube inside the cold light Beseler enlarger head. |
 |
comment
on this resource