Question about Pentax *ist DS Digital Camera

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Lens Hood question

The little removable door on a Pentax lens hood, is it used to access a filter such as a Polarizer which needs to be turned? Or am I completely off course?

Posted by Anonymous on

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Re: Lens Hood question

Yes, it is a neat innovation. Be careful though, it is easy to lose. Someone suggested drilling two small holes, one in the insert and one in the hood, and connecting it with a small thin line.

Posted on Sep 08, 2005

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Re: Lens Hood question

You couldn't be more on-course if you had a GPS and compass. Yes, the little door on the underside of Pentax plastic petal-style lens hoods is to allow access to adjusting polarizing filters without removing the entire hood.

Posted on Sep 08, 2005

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1 Answer

How to fit a filter to a 18-55mm lens


Remove the lens cap and lens hood, if present. On the front of the lens is a threaded mount, like the mouth of a jar. Just screw the filter on, like screwing a lid onto a jar.

Mar 11, 2014 | Nikon Coolpix 5200 Digital Camera

1 Answer

Can't get the quantaray circular polarizer filter off the Canon EFS55-250mm lens


The polarizer filter is comprised of two rings. One screws into the threads on the front of the lens and the other turns freely. Look at the filter closely, then grasp the ring closest to the lens and turn that one counterclockwise to unscrew it from the lens. If it's on too tight or you can't get a good grip on it, try wrapping a rubber band around it.

Jul 29, 2011 | Digital Cameras

1 Answer

Optio ls1000 pentax - the lens cannot be opened it says lens error 1511 or 1211 ? please help


The lens error is due to failure of the lens control system. You can remove battery and card replace battery and while switching on tap the lens hood on your hands so as to disengage any dirt or mechanism being struck.
Use some air to blow between the lens to dislodge any sand particles struck inside. If none of these works then you can think of taking consensus with the service centre as it canbe failure of the control/drive unit.
get estimate before you decide. It will be good to have it checked at the Pentax service as you do not have to run around for spares.

Jul 06, 2011 | Pentax Optio S Digital Camera

1 Answer

I am a sigma lens and filter user for my Nikon D60. I haven't used filters before and have acquired a 72 mm DG Filter. I would like to know how to use it properly, Any suggestions would be gratefully...


It depends on the filter.

If it's a DG UV (ultraviolet) filter, it cuts reduces the ultraviolet light reaching the lens. UV light scattered from particles in the air is what produces much of the haze that can obscure distant objects like mountains. Other than that, it has little visible effect. Some photographers like to keep an UV filter on their lenses at all times, on the premise that it's cheaper to replace the filter instead of the lens should it bash into something.

If it's a DG Circular Polarizer filter, that's something completely different. A polarizer cuts light waves bouncing in a particular orientation. You get this kind of light in reflections from glass and water, for example. Try looking out a window through the filter. By turning the filter (it has a rotating ring on it), you should be able to accentuate or reduce reflections and glare. It can also darken the sky, reduce reflections from leaves, and has other effects. The best way to explore its uses is to go out on a relatively sunny day and look at things through it. Try taking pictures with and without the filter and compare the results.

Since the D60 meters through the lens, you don't have to do anything to compensate for either filter. Just put it on and take the picture.

If you have any other questions, please feel free to ask.

Jan 04, 2011 | Digital Cameras

1 Answer

How toput a filter and hood


Assuming the filter is of the right size, it screws into the thread mounting on the inside of the front rim of the lens.

Depending on the particular hood, it either fits into the bayonet mount on the outside of the front rim of the lens or simply slips on.

If you're using a step-up ring to mount larger filters or using a Cokin-type filter, then you'll need a new hood to accommodate.

Nov 02, 2010 | Nikon D40 Digital Camera with G-II 18-55mm...

2 Answers

We just bought d90 nikon camera and we found a small half-round shadow at the bottom of the pictures taken when we dont use the zoom lens, how do we correct this?


Are these pictures taken using the built-in flash and with the hood on the lens? If so, you're seeing the shadow of the lens hood.

Remove the lens hood when using the built-in flash.

Sep 17, 2009 | Nikon D90 Digital Camera with 18-105mm...

3 Answers

Optio 555


Hi,

Is the lens totally stuck? Does it even move a little? Did you try to power cycle the camera?

Feb 27, 2008 | Pentax Optio 555 Digital Camera

3 Answers

I think my camera's stuck


I had the same problem the lens wouldn't retract and it would only stay on long enough for the logo to show...I found out my lens changed slightly cooked to oneside I gently moved the lens to center and now it works great...look at the lens and see if this helps

May 16, 2007 | Pentax Optio M10 Digital Camera

1 Answer

Filter


Skylight filters don't generally block UV, they change the colour tint optically, which you can do without danger of image degredation in post-processing, so I woudn't really recommend using a skylight filter for digital cameras. I haven't tried a UV filter on my fz10, only my circular polarizer. From what I've heard however, a uv filter may act as lens protection (or use the lens hood), and might in some circumstances reduce haze (rarely), and there are unconfirmed rumours of possibly reducing purple fringing. If anyone could ever confirm this, I might consider one. Otherwise, UV filters also seem peripheral for digital photography. Probably the most important optical filter you can use is a polarizer. This can cut a lot of excess scattered/polarized light and reduce excess contrast, increase sky colour saturation, etc. It's effects are extremely difficult or impossible to get in editing.

Sep 06, 2005 | Panasonic Lumix DMC-FZ10 Digital Camera

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