Ambrotype

Glass plate size: 17,8 x 23,5 cm, 2mm
FK 18x24cm Russian  WOODEN Camera with shutter
Lens: I-37 300mm  INDUSTAR
Frame size: 180x240mm
Diaphragm: 4.5-32 FK FKD camera
Date: 20-07-2013
Exposure: 8 sec @ f4,5
salted Collodion, Fixed with Amaloco x89 fix
Varnished (Sandarac)

Gum Bichromate photography is one of the many “alternative processes” or “historical processes”

Chemicals needed for wet plate collodion photo

PHOTOGRAPHIC HEAD REST, for wet plate photography arrived today

Since replacement bulbs for my Durst Laborator 138s are no longer available I decided to do a LED Light conversion.

Durst Laborator 138S (Enlarger on the left)

After having red this article on Apug :
http://www.apug.org/forums/forum43/116717-led-light-conversion-durst-laborator-138-a.html

I decided to buy this LED light:
http://dx.com/p/12w-1600lm-6500-7000k-90-smd-2835-led-white-light-ceiling-down-lamp-85-265v-158693
18W 1600LM 6500~7000K 90-SMD 2835 LED White Light Ceiling Down Lamp (85~265V) SKU: 158693

The parcel as it arrived  from China. As you can see the Light is large compared to the Kodak cartridge.

This light is larger then the one used in the mentioned article, it fits exactly in the Durst lamp head. Because of the large diameter it has an even light output and is very bright. Start up time is also not problem with this lamp.
It is also a very economical solution (Light was 25,00 Euro inclusive shipping from China to Europe).

18W 1600LM 6500~7000K 90-SMD 2835 LED White Light Ceiling Down Lamp (85~265V) SKU: 158693

Pictures show the Led light installed, removed original Light bulb & socket and even light output.

A simple modification of a wood 7×9″ film holder.

Step 1: I first removed the seperation plate from the wooden holder.

Step 2: I used glue to fix the 4 pieces of silver wire to the corners:

Red arrow pointing to silver wire: