I have a pj and the thing seems to power right through any dust that is on the lens. Granted it is a newer lens but I can see dust on the lens right now and notice no diffence in pq from when i first fired it up. If you have a thin layer of noticeable dust on the lens, will the pq really be affected?

I have a pj and the thing seems to power right through any dust that is on the lens. Granted it is a newer lens but I can see dust on the lens right now and notice no diffence in pq from when i first fired it up. If you have a thin layer of noticeable dust on the lens, will the pq really be affected?


No. Doesn't on mine.

When I first turned mine on I was shocked at how dusty my air was.. And I thought this 99% dust free air filter I have was supposed to take it all out..


As for the question I have alot of dust on my lense and the picture still looks great...

Yes of course it makes a difference. How much depends on how much dust, most likely it's not much dust and is unlikely to make much of a difference at all. Certainly the more dust you have in the optics path you get a dimmer and blurrier image, and loss in ANSI CR performance. People with old CRT RPTVs often find after having them cleaned thoroughly after years of collecting dust on the lenses in there, that the image is staggeringly restored. With digital FPs, the lenses aren't horizontal, and there isn't the same kind of static attraction either, so unless you live in a very very dusty area(or a smoking household) I wouldn't expect much significant dust to gather too quickly. A yearly cleaning may be appropriate depending, but you have to judge for yourself. Blowing the lenses off with clean air periodically is a good idea. The key thing though, is to clean the lenses only as often as you must. It is not good to clean the lenses too much, because each time you clean them you inevitably introduce scratches to the lens, so do not clean them unecessarily.

My new (just out of the box yesterday) HC3000 came with a lens cap on a string. My plan is to leave the cap on anytime I'm not using the PJ. I found I can pop it off and stick it on top of the projector during operation so I can leave it attached. Of course it will be interesting to see how many times I forget to remove it! I noticed it was made from aluminum so maybe they planned for people to forget.

^^ I was going to do that until I realized that the zoom slider moves if you barley move the cap trying to put it on or take it off.. And plus it was to hard to do being 8ft from the floor.. The cap on mine is rubber (HD70)

What is the best method for cleaning the lens (HD 1000U)? Thank you.

What is the best method for cleaning the lens (HD 1000U)? Thank you.

Look for a company that makes cleaning supplies for delicate optics such as camera lenses, telescopes and the like and you should find what you are looking for. You also could look at the manufacturers suggestions/recommendations in their manual or posted on their website.

What is the best method for cleaning the lens (HD 1000U)? Thank you.


All you need is one of those optical cleaning brushes that are used with camera lenses. Just a few light strokes and your dust is cast off. Seriously, dust on the lens is a non issue. Think about all the dust between your lens and the screen!!! The light has to cut through all of this....no problems!

Thanks everyone for your replies. Do I really need to put the lens cap on when not using the projector, it is a pain to climb a ladder just to put the lens cap on.

Golffnutt

I always put my cap on after use but I only need to stand on my couch to reach it. It is probably better to protect the lens but if doing so requires you to really go out of your way I would just do it when you know you are not going to be using the unit for an extended period of time. You could always invest in an air purifier for the room in an attempt to reduce the amount of dust in the room.

my pj is right next to me on a low stand, so it is easy for me to just reach over and put the cap on

Eclipse solution and pec (peck?) pad - safest camera cleaning combo.

Thanks everyone for your replies. Do I really need to put the lens cap on when not using the projector, it is a pain to climb a ladder just to put the lens cap on.

Golffnutt

There was a long thread on this topic sometime last year. The consensus was that you don't need to put the lens cap on between use and most posters left it off. The problem with many projectors is that placing the cap back on can throw your focus/zoom off. Depends on the PJ.

If the house is smoke free, I don't see a need. I just do a light brushing from time to time with an optical brush.