Hello everyone.
Are the dials on some colour heads such as Durst M670 that light up safe or will they fog the paper?
Seems to me that they would but why would they be designed that way?
I find it very hard to believe they would fog paper. That would be a boneheaded design oversight of simply incredulous proportions.
Well, they flew well (until they blew up).Like filling airships with hydrogen (yet they did it anyways).
I doubt it very much; the paper doesn't come close enough to do any harm but, of course, you can test for it; but first, Do you have any fogging issues such as fogged highlights or weak midtown contrast in your prints? If not, don't create an issue when there is none.Hello everyone.
Are the dials on some colour heads such as Durst M670 that light up safe or will they fog the paper?
Seems to me that they would but why would they be designed that way?
They can definitely fog film! - if you work with that in the same room, or sometimes enlarge onto film and not just paper. I've found that even dim red LED's can screw things up, and have not only put multiple strips of neutral density gels over any control lights, but carefully aim such controls away from film toward a black wall. And in utter disagreement to some of the statements already given - YES, if you're not careful, colorhead dial lights CAN indeed fog fast color papers, and current RA4 papers are quite fast. Hopefully, your colorhead has a switch to turn off such lights when handling paper. I learned all this the hard way. Hope you don't have to. Of course, a lot depends of how far away the colorhead is from paper when in use. Best to believe the paper manufacturer : "complete darkness".
I haven't noticed any issues though I only switched to this enlarger last session when the de vere I've been using stopped working at the community darkrooms. I have a durst m670 at home which I was intending to get a colour head for to use in my home darkroom which I'll be building maybe next year.I doubt it very much; the paper doesn't come close enough to do any harm but, of course, you can test for it; but first, Do you have any fogging issues such as fogged highlights or weak midtown contrast in your prints? If not, don't create an issue when there is none.
Thinking about it, the dials only light up when the lamp is lit, so when focusing or exposing. The paper is obviously on the easel when exposing and safely away when focusing. Not sure how I could test for that...
The Durst M605 which is my enlarger has a 100W but I have lowered it to 75 W as the exposure times at 100W were too short.But I've never heard of a color enlarger with a 100W bulb. Sounds more like a keychain light. Is that a typo for 1000W ?
Quite right. I note the OP has a Durst as well but its a 670 so his can do 6x7 negs whereas mine, a 605, is limited to 6x6 . Perhaps when he reports on his results he can tell us what his bulb's wattage is. It may be more than 100W but a bit less than 1000W I suspectDoubt it. Durst was made in Italy.
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