LED light conversion on Durst Laborator 138

[Tony Egan]

I don't know the proper word in english, but I use a piece of paper that we would call (translated) "chalk paper". It is also used to copy a picture or drawing by following it with a pencil; it's semi-transparant. Works very well and does not take too much light away (about one stop).

Stefan

Verstuurd van mijn GT-P7510 met Tapatalk

Also "Drafting film" used for architectural plans and drawings is a bit more resilient than plain "Tracing paper". I can buy it in single sheets from arts supplies stores in my city. I use drafting film as a diffuser in the enlarger I use for flashing and it works well

 

[Tony Egan]

Any problem with converting a Pavelle Color light head that's for a Durst L1000 into using LED light(s)? I have two of the heads, and was thinking of converting the current spare. It sure would be quieter in the darkroom without the fan running ;-)

Hi, I'm not familiar with that enlarger but looking at images it appears to have a much smaller lamp housing than the 138 but I'm sure with a bit of tinkering you could make it work without doing permanent damage!

 

[pcyco]

hallo

im working in an architecture office but we dont have tracing paper anymore.
only computers. but aut home there is a lot. thankyou for the input.
--
pcyco

 

[cardiomac]

Would this work with an Omega D2v?

LED light sources for the Omega D series enlargers are available from my website.

www.modernenlargerlamps.com

Cemil

 

[Aldo M.]

I wrote to Ilford some weeks ago about led illumination and use of multigrade ilford filters and this is the answer:

"First the good news! I believe that the ban on tungsten bulbs in Europe only extends to domestic bulbs. Equipment and specialist lamps are not included - yet. If you are using the Multigrade filters I would recommend using tungsten light as the filters were designed using the "black body-ish" wavelength range of tungsten. LED outputs are always going to be spiky! Filters and white LED will work to some extent but the 1/2 grade spacings may be compromised in interesting and challenging ways and I would expect a reduced contrast range (potentially similar as for people who have tried to use fluorescents and MG filters). The degree of difference will depend on the output of the LED used. It is possible that a particular LED will be such a good match that it works almost as well as tungsten. This would only be found by trying it. Also, your english seems excellent. Please reply to this email with any further questions."

What do you think?

 

[Tony Egan]

I wrote to Ilford some weeks ago about led illumination and use of multigrade ilford filters and this is the answer:

What do you think?

Aldo, thanks for taking the time to inquire and sharing the response here. I suspect there will be differences between incandescent bulbs, halogen lamps and LED light sources in how VC paper responds. The question is are they significant enough to discard one altogether in favour of another? I think the skills of a good printer will compensate for any minor variations in filter responses for a light source of roughly equivalent colour temperature.

I am not patient enough to do painstaking testing on what I can already see are very minor differences. I prefer to use my scarce time to make pictures which are "hang worthy"!

Since my last post I have also converted my Beseler 45 enlarger to an LED source without any permanent damage to the existing colour head. I have printed the same negative now on Durst and Meopta (both condenser/bulb) and the Beseler and Durst with LED light source. I can see no significant differences that would cause me to abandon LED in favour of traditional hot light sources. I mentioned above on the Durst conversion the contrast seemed to be a little higher using the same filter but not serious enough to be uncontrollable through moving up or down in grades.

 

[DREW WILEY]

I've seen quite a few pictures over the years where the photographer deserved to be hung. Some
expressions can be a little ambiguous.

 

[MattKing]

I've seen quite a few pictures over the years where the photographer deserved to be hung. Some
expressions can be a little ambiguous.

Drew:

In this context, I believe it is: "Pictures are hung, people (including photographers) may be hanged".