Enlarger bulb workaround

[ath]

Yes, but a CFL bulb, if that's what you are suggesting,is hardly a replacement for the new technology of LED's.
Instant on, thousands of hours of reliable output, constant color temperature,or variable,in some models,dimmable output,almost zero heat output,lightweight construction..
Makes a CFL look like a Tallow Candle by comparison.

What about the CRI of LED's? "white" LEDs are far from a continuous spectrum, even worse than CFL's.

 

[Smudger]

You have the advantage of me sir. But,I might have known there was no easy solution..
Would this matter for B&W printing though ?
For color,yes.

 

[Robbedoes]

Is Ole still around here?
I want to know his experiences using his bulb alternative.
Concerning spectrum, I’m using graded paper.

Regards,

Rob

 

[Steve Smith]

What about the CRI of LED's? "white" LEDs are far from a continuous spectrum, even worse than CFL's.

Use equal quantities of blue and green LEDs and vary the times of each to change grades.

(there was a url link here which no longer exists)

(there was a url link here which no longer exists)


Steve.

 

[ath]

Use equal quantities of blue and green LEDs and vary the times of each to change grades.

(there was a url link here which no longer exists)

(there was a url link here which no longer exists)


Steve.

Yes. Including the limitation in max. achievable contrast with blue LED's. A continuous spectrum has the advantage that the spectrum simply goes on and one only has to filter and extend exposure...