Right up to the end!!
6K hours

Curious, what do you guys think of this spread?

not sure what lamp that is... maybe the 250W or 400W one ??
According to the specs, the CDM-TD 150W/942 RX7s indicates 16,000 hours of life.

gs

The 150W G12 single-ended version - according to the spec sheet PDF I have.

That one (CDM-T 150W/942 G12 T6) I see listed as having 12,000 hours ?? (spec's from philips.com)

... I only looked that up yesterday... mostly wondering about arc size... which the T6 has a smaller arc, 8mm (vs. 10mm for the DE RX7s), but the lumen ouput is lower 12,700 inital and 8,900 mean (vs. 14,200 & 12,070 for the DE RX7s)... ??

Looks like you've been making some progress, elken. :-) Good work!

So... do these ceramics come in 400 watts? I'm sure arizona video will be overdriving one to 1500 watts soon enough but still...

You say it looks as bright as a 400 watt only with sky high contrast... Remarkable! hope you get some rox readings- I mean LUX readings, soon.

So let me get this straight. Are you overdriving this lamp a tad or just using it as your supposed to?
Now elken, take note I just asked you two questions. See the question marks? Count them, one two. I'd appreciate it if you answered at least one. Instead of "doh! hehehe! hi mikau! Um er mmm the ceramics look good, mmmm... er um... hmm.. um got more testing to do, mmmm hehehe yeah" I'm afraid I don't speak that language.

ummm errr heheh Hi Mikau

what was the question again ??? !!!

heheh in actual fact you had THREE questions,,,,

have not really looked for 400 ones,,, arc size!! and yes it is a non remarkable standard 150w ballast
in fact not even the right ballast for it....

it is very hard to porperly convey how well this config works,,, more than enough to say that I am willing to commit to it,, and go the whole hog as far as optics optimization,,, precon's etc, and when I can get a PRO set of lens,,,, then we will have a real view,,

the biggest things about this is that a normal glass precon is ok,,, gets hot but not crackable hot, and also the fact that I have dispensed with the heat shield etc,,, also means I could build a very tight mean little PJ, except for the 17" panel of course,, and also I do think,,, needs to be proven tho,, it could be driven to 200 - 250 watts,,, or I wait for the new Osram sample 200 watter..

Ok here is a downloadable video of the CDM in action,, as I get better setup,, I will add some other test examples, especially the Fifth Element one with the Hand..

bear in mind this is using the low qual vid from my camera

((Link Now no longer active for this video))

EDIT: link now works

oops need to edit permissions,,,

if link does not show Vid Clip,, I am still editing permissions

EDIT: link now works

Actually, you may have made an important discovery there. I had a 4" hand magnifier lying around so just lay it on top of the Alman condenser. Took it away then put it on, took it away then put it on etc and was amazed at the increase in lumens. Did a quick lumens check and I get something like this:

100 95 97
95 113 94
103 98 95
227 ansi lumens, vignetting 87%

This is without magnifier
79 97 68
85 111 71
80 93 60
190 ansi lumens, vignetting 64%

The edges of the screen are cut off slightly because the magnifier needs to be 5" diameter or larger but the $2 el-cheapo from Stacs sat there for 3 hours without cracking. This is with the Osram HQI400.
edit: thats a 19% increase in lumens

Shhhhh . . . what's that I hear? Why, I believe it's the sound of drool droplets hitting the floor in mikyd's work cubicle!!!

Wow! I guess we need a lot more empirical work out there!?

damnn why is when we have all in balance,, the universe shifts .267845 degrees out of phase again heheheheheh


Oh edit,,, that video download is only an example,,, it shows nowhere how good the pic really is,,, I only used it to show some dynamics, as per colour and varying light and darks,,,

something that is sorely missing from all our still shots...

got that right, and its in my price range too

lol, the Elken Initiative!

Gotta love LOST...

two more vid clips to follow very shortly in this post here
approx download is about 1.5 meg so beware


>>> http://www.itinfo.com.au/phpBB2/download.php?id=23



This second link now removed,,,,

elken: You got stock in KFC or what?

Nup,,, but likism da redism's colourism's Oh take note of correct spelling of COLOUR 'u'

This is awesome information... just what I've been looking for to get me motivated again.

Anyone have a source for these in the states-- how about a proper ballast???

About the middle of the page.
http://www.productionadvantageonline.com/lamps.htm

I don't know about ballasts though.

I was talking with elken the other day about the increase he was seeing using the second lens. The extra light has to be coming from somewhere. In elken’s experiments he was using a not so ideal 80mmdia 300mmFL pre-con so we explained the extra light was coming from the light that was over shooting the LCD. Now your experiment had me thinking a bit harder. You say that the corners were lacking light. Is it possible that they are lacking 19%? And when you calculated the new ansi lumens did you account for the smaller screen, the diagonal of the screen has to be measured from just smaller than the dark circle created by the smaller lens? The extra light has to be coming from wasted light or it is concentrating the light to a smaller area.

DJ

Yes the corners are lacking in light but its caused by the outer edge of the magnifer, it has a wide black plastic rim with a handle attached, The exposed glass of the magnifier is 98mm diameter, whereas the precon is 114mm diameter.

I'll rip the outer plastic rim and handle off the magnifier and try again.

I see where you are coming from though Dazzla. Found a 5" magnifier and although it is not glass and might only last 5 minutes I'll do some more experiments tonight.

Just picked up control gear kit for the CDM 150watt,,, all fully mounted ready to go...

Click to view attachment

Hey Daz here is what we were talking about,,, she's a baby,, but fat heheheh

Click to view attachment

Hre is startup with new settings and control gear, plus fat baby

Click to view attachment

Click to view attachment

Ok to follow shortly in this post more still pics of increases

>>>

Click to view attachment

the gain in pic on screen has exceeded the sony commercial unit i had here for a time... a month ago

Sim what was the lobster pic from,,, I wanna get a snap of that,, to compare it was an excellent example to use

I want to do a shot and see how this 150 watt cdm does the job,,, with my baby fat precondensor

ok here are two shots with three sixty watt lamps running

Click to view attachment

Click to view attachment

OGS150-102 (with thermal cut-out) ??
AZRM1.8ES ??
CP18 ??

Edit: I just blew up the pic and can see that they're not Atcos, probably equivalent though...

Vossloh Schwabe
150w 1.8 amp 100 volt
has 230 and 240 volts input too

since elkens ballast puts out 100 volts, wouldn't an HPS 150 watt ballast work?(I'm assuming that the difference between a 400 watt hps and a 150 watt hps is in the amperage, but this is not my strong suit )

I'm getting some pricing on the Atco/Philips gear at the moment. Preliminary pricing puts it a bit cheaper than the Osram/Atco 400W gear, the bulb is more expensive with the control gear a bit cheaper.

What's the bulky precon from?

do you mean little fat boy,,,, if so ummm i have no idea,,, could be a slide projector,,,, it was among all my optics bits and slobs,,,, never considered before now due to the other lamps being to damn big to get the plano close enough and spread field wide enough,,

I have gotta say again,,,, with this setup the contrasts have gone thru the roof,,, I have never seen images so good,,,, and the colour ranges also have gone beyond thru the roof too,,,

As Daz said when i was talking with him,, POP,, well and the fizz and bang too hehehehhe

I need some else to commit and join me in this low wattage ceramic game,,, then you will see what I am saying...

I have just sat down and watched the fifth element with my son,, who has taken over the helm,,,

and I must say I have never seen such contrast detail ever, as in this with all the previous lamps I have used so far, all the dark scenes with bright part as well,, the dark detail stands out well.....

Oh and the colour is absolutely stunning,,,

Just a quick note for others sourcing light gear, these 'short arc' bulbs require the use of ballasts with thermal cutoff. Basically, when a short arc bulb gets to the end of its life it can begin to draw an excessive current. To avoid damaging the gear and creating a fire thermal cutoffs are required in the ballast.

For those searching for 240V Gear (this is from the Atco Ignitors catalog pdf)

Bulbs:
Philips CDM-T150W 96V 1.8A
Philips CDM-TD 150W 96V 1.8A

Atco Ballasts:
2 x EPS150.5TH
or
OMS150TH
or
OGS150TH

Atco Ignitor:
AZRM1.8ES

The same table for some reason doesn't list the capacitors but from the ballast pdf it's 18uF
Atco CP18

I'll be there soon. Need a precon. Gotta pick up my new fresnels too.

Good info OZ,,,

Another fact that seems to be clear,, is that having a good balance of colour, was not easy before, becuase it seemed to oversaturate

with this setup the colour is so rich, its not funny,, the fifth element is full of very rich colours,, but the line is fine, otherwise you kill quality,,

what scene from what movie does anyone want me to use as an example, to futher show what I am trying to convey?????

I'm surprised that no-one (except Rox) has mentioned elliptical reflectors with such a short arc bulb, plus the fact it comes in a single ended variety, seems perfect for it...I'm looking at some ellipticals, I actually have an altman elliptical reflector but I think its too big(4" in dia)
so, for one of these ballasts, is there any way to hook up a thermal cutoff to an s55 ballast? assuming of course that an s55 would run it?

I was reading Rox's findings the other day. He said that the single ender's have a wire to join the 'other end' which always casts a shadow in the projection. That's why he jerry-rigged his last tests to remove the wire.

my view on ballasts is that if it can supply 100 volts,, and lets say no more than 2 amps,,,, hmmmmm could be ok

I cant remmeber but i think meyer said its max was about 2 something amps,,,,


ahhh but the trick is finding the right elliptical,,

what I have done is a mere begining,,, now that we have a real small profile lamp the rest is pure experimentation....

small size
way less heat
no U/V
no heat shield
safer fire risk
and way less power to run system
more robust
small precondensor

heheheh only con,,, now have to use heater to stay warm during winter

where'd you see that?

It's somewhere around where elken first revealed the ceramic results.

can't believe I missed that...must be slipping..its the heat I tell you, the heat...

where waaaasss the lobster shot from,,,,,,, folks......

The specs for the Philips CDM-TD state max current 2.5 amps. I had a 100V/250W ATCO ballast supplying 3 amps just as an experiment. You can see the results I posted earlier in this thread.

Also ran it on an ATCO 100V/150W ballast at 1.8 amps and although the colours and contrast were good it is not what I am after in a projector, those results are also posted earlier.

I just can't see myself spending $130 (lamp and ballast) in order to get 1/2 the lumens of an HQI-TS setup, even though there appears to be a better lumens at the screen per watt of power used with the 150 CDM, but in the end it's the total lumens (lux) that counts. I've been at ~70 lumens on my screen before, and it is very watchable, but 144 lumens is much brighter and better in my opinion. I'll say this only once more... It would be nice if you had a lux meter and could share you readings with this lamp. ($30 on ebay from Hong Kong )

I would like to try these ceramic lamps once they become available in the 400W variety. The 250W claims a 15mm arc length, but the 400W has no technical data at the moment. (as a reference the standard EYE Hor BT-28 lamps have 29mm and 38mm for the 250W and 400W varieties) My guess would be the 400W ceramic would be ~20mm arc (which is double that of the 150W philips, but still pretty good). The ceramics are 'BU/BD' (base up/down), and are rated 'O' for open enclosure, and they will run on standard HPS gear.


JMHO.

cheers,
gs

I was just talking with elken about these tonight. From previous experiments with ellipticals, they are very sensitive to distances. With a spherical there is a bit of tolerance but the elliptical has to be spot on. I’ve seen it mentioned that by using a lens any mismatch in angles can be changed but I’m not to sure that it can be, at least not easily.

I’m almost interested enough to get a ceramic to test. I already have a ballast that I didn’t realise was a match (and a limited supply of more) and a stack of different pre-cons so I’d only need to get a lamp. Oh the torment of forking out cash.

DJ

ok found it ,,, this is because Sim,, had set a new ref picture,, here is the CDM version,,

Click to view attachment

Was that a subtle hint? Would you like to try mine?