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Picard
Guest
Any good deals you know of?
What advice can you give?
Will be used in a large classroom.
What advice can you give?
Will be used in a large classroom.
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Question of the Day: If you were buying a TV today, which brand would you choose?
Gadget Man
Senior Member
The major considerations are:
1. Brightness
2. The resolution
3. Replacement globe availability
If the classroom has no curtains, then the brightness is a factor and you need to consider something way above 2000 ansi lumens (this is actually very dull and meant for a darker room). The brighter, the more expensive.
The resolution matters depending on the detail that you need to show. Lots of small writing and text and you will need a resolution of at least 1024 x 768 (most cheapies come with a 800 x 600). You will see the difference if you compare the two of these side by side and display the image. Go for the 1024 x 768 as a min, and not one that upscales.
Make sure you get a unit where you can get a replacement bulb. These are often a few thousand rands and last about 2000 hours.
I am sure you would be able to get something around R 5000.
Other considerations:
- keystone adjustment so that the picture can be adjusted from a trapezoid shape
1. Brightness
2. The resolution
3. Replacement globe availability
If the classroom has no curtains, then the brightness is a factor and you need to consider something way above 2000 ansi lumens (this is actually very dull and meant for a darker room). The brighter, the more expensive.
The resolution matters depending on the detail that you need to show. Lots of small writing and text and you will need a resolution of at least 1024 x 768 (most cheapies come with a 800 x 600). You will see the difference if you compare the two of these side by side and display the image. Go for the 1024 x 768 as a min, and not one that upscales.
Make sure you get a unit where you can get a replacement bulb. These are often a few thousand rands and last about 2000 hours.
I am sure you would be able to get something around R 5000.
Other considerations:
- keystone adjustment so that the picture can be adjusted from a trapezoid shape
techead
Honorary Master
Picard, one thing to note here is that most people dont put thought into what you projecting ONTO.
Most common person in the street thinks that projecting onto a wall is fine. Got a brightness problem? Then they thow more ansi lumens at the problem. Anyone who is in the industry will know exactly what I'm talking about.
So if you serious about bang for buck, and possibly saving on getting a cheaper projector (less bright, good res) and getting a decent surface to project onto. We can talk about high gain screens, but its all down to $$$
Most common person in the street thinks that projecting onto a wall is fine. Got a brightness problem? Then they thow more ansi lumens at the problem. Anyone who is in the industry will know exactly what I'm talking about.
So if you serious about bang for buck, and possibly saving on getting a cheaper projector (less bright, good res) and getting a decent surface to project onto. We can talk about high gain screens, but its all down to $$$
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Picard
Guest
We've got a big white melamine board fastened to a wall. It has worked quite well in the past for the previous old projector so it shouldn't be a problem.
techead
Honorary Master
suit yourself, YOU asked for help
Actually laminates is a well known DIY projector screen and work very well if you get the right finish.
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Picard
Guest
How do I interpret this?
Say a projector has a ANSI Lumens of 2200 and a contrast ration of just 500:1 (Hitatchi ED range) and another make has a Lumens of 2500 and a contrast ration 2200:1
Why does both have a similar Lumens strength but such a low contrast ratio?
Say a projector has a ANSI Lumens of 2200 and a contrast ration of just 500:1 (Hitatchi ED range) and another make has a Lumens of 2500 and a contrast ration 2200:1
Why does both have a similar Lumens strength but such a low contrast ratio?
From my reading before purchasing a projector for HT the contrast is a subjective figure. Higher Lumens will have more of an impact especially in rooms where you have lots of light. JayN pretty much summed up what you need to be looking out for.
From personal experience
Home theatre use I went with: http://www.projectorcentral.com/Epson-PowerLite_Home_Cinema_8350.htm (due to 3LCD tech, resolution and good reviews as a HT projector)
For boardroom use I went with: http://www.projectorcentral.com/Optoma-TH1020.htm (due to Lumens and Resolution)
Can't find the in depth article I read back then right now, but this is a good summary: http://www.projectorcentral.com/classroom_projector_buyers_guide_contrast_ratio.htm
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Picard
Guest
Hopefully my last post about data projectors to bother you with.
I've narrowed my choices down to a Hitachi and an Epson. Both have close enough specs but the Hitachi has a 3 year warranty vs Epson 2 year.
Which has the better reputation?
I've narrowed my choices down to a Hitachi and an Epson. Both have close enough specs but the Hitachi has a 3 year warranty vs Epson 2 year.
Which has the better reputation?
Post links to the models so we can see the specs.
I can't comment on Hitachi, but my Epson is going on 2 years old now and I'm very happy with it.
The value of your warranty is going to have a lot to do with the local service agents. Which of course you can only test when something breaks or if someone else can share their experiences.
I opted to import my projector at a substantial saving vs. the local agents. Of course they will probably choose not to honour the warranty, so as back-up it's insured for breakage.
I'd rather be guided by what meets your requirements than warranty. Just make sure you have a plan B for repair (and costs) if the service agents turn out to be a dud.
Edit: It also occurred to me now if you are down in the R5k bracket then actually just run the PJ as long as it or the lamp will last and then shop around for a new one. You might find that cost of the repair/lamp vs. new and better specs is a better way to go.
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