J
Jacek Zagaja
Gentelman,
Do you know any popular fluorescent linear bulb that is:
1) CRI > 95
2) Max. 38 cm (1.2 ft) length
3) Min. 700 lumens*
4) <= T8 (26cm)
I have looked at the Philips catalog but all bulbs don't met 2).
* Bulb flux is a matter of question. I calculated needed influx for
viewing slides so that my sensitivity point is 0.5 nits. This is my
minimal perceived illumination if my eye is able to adjust aperture
(this depend on viewing angle and the max white in the field of view).
I think this is a good choice. Assuming that I should discern 3.5
Density needed influx is:
10^D*sens_point = 10^3.5*0.5 = 1581 nits
Question - is the 2x700 lumens bulb more or less sufficient?
(the smaller bulb efficacy the shorter tube I'll get)
With Kind Regards,
______________________________________________________________________
Jack Zagaja - photographer, designer, programmer
free photoshop plugins, photographic assistance
opinions and much more ... [email protected]
Do you know any popular fluorescent linear bulb that is:
1) CRI > 95
2) Max. 38 cm (1.2 ft) length
3) Min. 700 lumens*
4) <= T8 (26cm)
I have looked at the Philips catalog but all bulbs don't met 2).
* Bulb flux is a matter of question. I calculated needed influx for
viewing slides so that my sensitivity point is 0.5 nits. This is my
minimal perceived illumination if my eye is able to adjust aperture
(this depend on viewing angle and the max white in the field of view).
I think this is a good choice. Assuming that I should discern 3.5
Density needed influx is:
10^D*sens_point = 10^3.5*0.5 = 1581 nits
Question - is the 2x700 lumens bulb more or less sufficient?
(the smaller bulb efficacy the shorter tube I'll get)
With Kind Regards,
______________________________________________________________________
Jack Zagaja - photographer, designer, programmer
free photoshop plugins, photographic assistance
opinions and much more ... [email protected]
