Perhaps, I did the test after I read from another member here that he had tested his K5 the same way. Maybe someone else would do a similar test of their K5?

edit: Found the thread. Look for posts from Tyr

edit 2: The DA* 50-135 seems to be internal zoom though so air sucking might not be the problem after all.

John if you were referring to my 18-135 the air sucking I was talking about was from the back of the camera.

The OP's lens was a DA* I believe.

Cheers

Gary did you use your zoom while it was raining/the camera was wet?

This is what happens when I zoom my K-5 with a DA 18-135mm WR. A lot of air gets sucked in and out from the rear of the camera.

Cheers,
Brian

edited to make the post more clear

Hello,

As topic says, I'm looking for a K-r body plus battery and charger. Must be in excellent condition.

I realize there are a few for sale on the classified here, but I don't really need all the extras.

Please contact me through pm. PayPal preferred.

Cheers,
Brian

It's strange though, I had it out for a test shooting this evening and I couldn't hear anything. I even put my ear next to the lens. When I got home the noise returned.

I mailed the store I bought it from, waiting for a response. I may call Pentax in Denmark too just to hear what they suggest.

Cheers.

Hello,

I just received my DA* 300. Everything looked fine at first but I noticed an annoying "whining" sound when the AF goes from 1.4m to infinity. Is it something I should worry about? Would you send it back for a replacement?

I tried to record the sound with my phone for those caring to have a look.

link

Cheers
Brian

Well I'm not sure it's about treasure to be valued, it's more about that, if the lens gets damaged, I won't be able to afford another one for quite some time.

That being said I do agree that if you're not going to use your equipment to it's full potential from fear of damaging it, it's somewhat of a waste.

I'll wait and decide when I get my lens. My only experience with lens hoods is from my 18-135mm and that one is not very deep and doesn't offer very much protection.

Again, thanks for all the inputs!

Cheers
Brian

Package in mail today, everything works brilliantly. Thanks a lot!

Cheers
Brian

Thanks for the replies everyone. I think I will look into a B+W UV filter. I don't expect to run the lens into a branch but as with insurances I will feel better being prepared for worst case scenarios.

@johnha I didn't know about the haze thing, thanks for the tip!

Cheers
Brian

Hello,

I just ordered a DA* 300 lens. I'm looking to get a good quality UV or clear filter to go with it. I'm shooting mostly outside in the woods, crawling through bushes, lying down on the ground to get those bugs etc.

I'm well aware that there are different opinions about whether to use a protection filter or not. I'm not looking to start a discussion, I'd rather like to hear about real life experiences with different filters, UV or clear.

I do know that using a hood will offer a lot of protection but I still feel that branched are a risk to mind.

Any input would be greatly appreciated!

Cheers
Brian