Proper bulb for Durst L1200

Deleted member 88956 · Dec 2, 2021

Looking for recommendations on quality bulb for Durst L1200 (CLS 450 head to be clear).

I see several from Osram, GE and others. Basic specs being 24V, 250W, GX5.3 but that is not all. I also noticed color temperature being 3000-3500 K on all offerings and thought it would have to be closer to 5000 K, no?

Main point, what are you using ?I won't splurge on so-called Durst bulbs, I know I don't need to).

Deleted member 88956 · Dec 2, 2021

For the time being I'm considering one below, but am wondering of other options. GE does not seem to be available here, there are some Phillips offerings.

OSRAM 64653 HLX ELC HALOGEN XENOPHOT GX5.3 24V 250W

MARTIE · Dec 2, 2021

I've tried most of the lamp brands in various Durst enlargers and the only difference I've noticed is the exposure times between new and old lamps.
You don't want or need daylight colour temperature lamps.

RalphLambrecht · Dec 2, 2021

VTLD said:
Looking for recommendations on quality bulb for Durst L1200 (CLS 450 head to be clear).

I see several from Osram, GE and others. Basic specs being 24V, 250W, GX5.3 but that is not all. I also noticed color temperature being 3000-3500 K on all offerings and thought it would have to be closer to 5000 K, no?

Main point, what are you using ?I won't splurge on so-called Durst bulbs, I know I don't need to).

that's what I'm using. I believe the current temperature is normal for halogen bulbs.

Deleted member 88956 · Dec 2, 2021

Great to both, easy to get them here too.

halfaman · Dec 2, 2021

For me the most important thing was that the bulb is intended for projection, avoid general lighting bulbs and specially the long lasting ones (very changing color temperature and ilumination with time).

Deleted member 88956 · Dec 2, 2021

@RalphLambrecht @MARTIE These bulbs indicate 50 hr work life. That's actually a lot for enlarger work and I won't be doing any serious volumes. But how do you deal with life span for these? Wait until dies and always have spare in hand, or change them at some point before they go down?

MARTIE · Dec 2, 2021

I wait until the lamp stops working and it's a good idea to always have spares on hand.
The exception for me is with the Durst Multigraph which automatically and electronically compensates for the lamps output. When times become excessively long I put in a fresh lamp and keep the older lamp for other enlarger heads.

Renato Tonelli · Dec 2, 2021

MARTIE said:
I wait until the lamp stops working and it's a good idea to always have spares on hand.
The exception for me is with the Durst Multigraph which automatically and electronically compensates for the lamps output. When times become excessively long I put in a fresh lamp and keep the older lamp for other enlarger heads.

My experience as well (also Multigraph). I change it when exposure times become very long.

Keep a spare on hand. Stick with the ELC lamps for the sake of simplicity (always the same color temperature).

Proper bulb for Durst L1200

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