davex

Joined: 13th January 2009

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davex
Quote:
I've used the Cokin Z-pro with a screw-in pol without any problems you just need to have a finger on the pol if you turn the holder.
If you have pol inside the holder then when you turn the holder you need to re-adjust the pol again so it might even be handier to have a pol screw-in pol then a Cokin pol.
Think it`s time to call it a draw Stefan

Quote:
It is not crucial to get a circular polarising filter, a linear polarising filter will also work on Pentax DSLRs despite what many people will tell you!
Have read this a few times, this article gives a brief description of the issue. Perhaps this is the only time Pentax AF beats the opposition.

Davex.

Comment by davex posted on cokin filter? at 15/08/2009 - 17:14

davex
I got one from Jessops, at £49 it was a steal, at £100 I think it`s still good value, watch out for purple fringeing in high contrast areas, other than that it`s a good way to decide if you want to lash out on a more sophisticated optic.

Davex.

Comment by davex posted on What lens do I need? at 15/08/2009 - 14:46

davex
Quote:
It might be the way for you Davex but I've my pol filter on almost 100% of the time. The holder you need for the filter makes the lens front heavy and also longer and wider then with a screw-in.

Also buying a square system filter for just a pol seems a bit silly to me when a Hoya or B&W are better and just as expensive as buying a holder and a pol filter and the rest what you need for a square filter
I can see your point Stefan, but have to disagree;if Emma goes with a screwin pol then decides she wants to combine with an ND Grad or some other it is going to be a pain. I think it much better to start off with a proper system, which can be adapted rather than messing about with bits and bobs.

Quote:
For saving some money you can buy a 52mm pol that fits straight on the 18-55 and use a 52mm to 49mm stepdown ring so that you can use the 52mm pol on a 49mm filter size.
The 50-200 and the macro are 49mm and also the 50mm I believe so you cover 4 lenses with just one filter.
This is a good point but equally aplies to a square system.

My thoughts, for what they are worth, are thus;
If you want to try a pol go with Stefan`s suggestions, unless you think you may wish to try other filters, in which case get a square system. Incidently, while you should always get the best filters you can afford the holder and stepping rings can be bought off ebay much cheaper. try here.

Davex.

Comment by davex posted on cokin filter? at 15/08/2009 - 07:29

davex
Quote:
For the pol I would get a screw-in filter they are simpler and far more user friendly
One can get circular filters to fit the square systems. For me this is the way to go, but as above,if you intend to use very wide angle, say less than 16mm get a large holder, or vignetting may occur.

Davex.

Comment by davex posted on cokin filter? at 14/08/2009 - 22:47

davex
realy like No1, much better than my efforts.

Davex.

Comment by davex posted on wanted tammy at 14/08/2009 - 15:59

davex
Quote:
I noticed you shot in DNG - which converter are you using?
Elements 6, am still learning technique, the K20 is my first DSLR. Things are starting to improve, it probably just takes me longer, i realy should get a monopod but then it`s just something else to carry around.

Davex.

Comment by davex posted on zoom at 14/08/2009 - 12:15

davex
Quote:
Sorry Davex - you have obviously chosen good subjects and thought about the framing. I didn't want to launch into an unsolicited criticism of your photos - I just wanted to make sure that Emma and other readers understand what they are looking at.
Derek,what I was trying to illustrate was that for £100 you can get a decent zoom.

Quote:
Davex, were you using a tripod or the shake reduction? I would suggest that, whatever happened, 1/180s at 300mm, for example, was not sufficient to prevent blur.
All of the shots on this post were taken handheld with AF. I have tested the focus and it is bang on. The bit of info which you do not have is that due to a dissability i can only use 1 arm, so any blurr tends to down to me, this has two effects; camera shake, and particularly with a zoom, body movement after the AF has locked. i think i probably lose about 3 stops with the Tammy on

I have no probablem with any criticism of my shots Derek, as long as it is constructive, or meant well. Your`s was.

Davex.

Comment by davex posted on zoom at 14/08/2009 - 11:25

davex
excellent

Comment by davex posted on Squirrel Steals The Show at 14/08/2009 - 11:10

davex
Hi Emma,
All the shots below where taken with a Tammy 70-300 macro, Yes it`s not as good as a DA*300, but then it cost a hell of a lot less.

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Davex.

Comment by davex posted on zoom at 14/08/2009 - 08:56

davex
Quote:
Shaking the sensor inevitably puts some stress on the mounts
Presumably the designers would have taken that into consideration when they specced the camera. However it does sound and feel quite strong when i turn the camera on. What about the early adopters: anybody heard of problems with sensor mounts :

Comment by davex posted on K20 sensor clean on start up at 13/08/2009 - 13:09

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