I just changed lamp in my 1100 after 2501 hours ! ( Sony promise UP to 2500 hours in eco mode, which I use ) cant complain about that , actully Im impressed
( it still did work fine, but the projector started display" change the lamp" at 2495 hours, and I didnt want it to explode
With a new lamp ( 5 hour ) I measure in high mode / iris off / clip at 235 / 280 cm wide / 126" dia 16:9 - about 275 lux / 25 Fc ( with 93" - 456 lux / 42 Fc )
the old with 2501 hours on: - about 225 lux / 20 Fc ( with 93" - 370 lux / 34 Fc )
So over the hole life spand of the lamp, I only lost about 18 - 19% light output ! sounds very good, but a litte strange it not has lost more !? ( both lamps are orginal lamps bought from Sony ), but maybe the first lamp was a "better" one from start
- I didnt measure it at new or cant remember it
- think, I slight remember measure something over
500 lux in the 93" size at that time , but im not sure ).