Algernon

Joined: 22nd May 2010

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Algernon
It's a fairly standard fitting also found without a door
on some radios such as the Pure Evoke 3.

Comment by Algernon posted on K5 SDHC Slot... at 10/12/2012 - 10:12

Algernon
And a Merry Christmas from him!

Comment by Algernon posted on a Merry Christmas at 10/12/2012 - 10:11

Algernon
It looks in focus.... Certainly not back focussed.
The only way to be sure is use a focus rack and
bracket +/- 7-10mm each way. Always better with
still lifes anyway.

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Comment by Algernon posted on Focusing manual lenses on K5? at 09/12/2012 - 18:17

Algernon
Great stuff. I like the shed on the 2nd shot, it makes
it unusual.

Comment by Algernon posted on Snowdonia earlier this year at 09/12/2012 - 18:11

Algernon
Just carried out the adjustment on my Pentax-A 50mm f/2.8 Macro
at f/2.8.... It was the same as the 50mm f/1.7 at -5

Checked it for CIF MOVING IN SLOWLY and it's SPOT-ON!

Cropped shot. No PP from JPG.

Comment Image


It's better with any flat test target to make a 45deg paper
box and put a black piece of insulation tape on it. Mine
was held together with 1 staple.

Set the camera at 45deg... you can see the Rabone angle
checker in the background set to 45deg.

The CIF shot was aimed at the tape.

I don't even need to look through the finder now
to focus... I just listen for the beep as I move
in or focus by turning from infinity towards
minimum focus.

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Comment by Algernon posted on Focusing manual lenses on K5? at 09/12/2012 - 17:25

Algernon
I've just been getting some stick off a friend who uses a
Canon he stumbled across this thread when searching for some
Canon screens. He finds it very funny that some people on here
can't even focus their cameras and that some people including
a mod wouldn't be able to pass a beginners exam

i.e.

Question 1:

What do you see when you look through the screen of a DSLR

a): A view that is approx. 90% Life Size.

b): A view that is very small similar to holding a 35mm slide
in front of your eye without a viewer.


Question 2:

Can the DOF seen on a 35mm focusing screen be put to good use
in movie making.

a): No. There is no DOF visible on a 35mm focusing screen.

b): Yes. You can buy or make a DOF Adapter similar to this one..
]http://www.youtube.com/watch?v=q2zBT9jMoyM




Smeggy's right about the standard screens only seeing f/2.4
It's caused by cutting extra fresnel grooves to boost
brightness.

Even Pentax state (In the K-30 spec. )

"The K-30 accepts a PENTAX-original Natural-Bright-Matte III focusing screen to facilitate manual-focusing operation. The photographer can replace the standard focusing screen with one of the available optional screens, including cross-lined and scale types, to accommodate more specialized applications."

http://www.pentax.co.uk/en/Digital%20SLR/k-30.html

I've now got my 50mm f/1.7 set up so that CIF works
correctly as I move in towards a subject, it's about
15mm out (at 1M) if it triggers moving away.

This is a crop triggered at f/2 moving in....


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There is an excellent chart and test procedure for
focus testing at....

http://photo.net/learn/focustest/

Also see...

http://www.pentaxforums.com/forums/pentax-dslr-camera-articles/61385-autofocus-a...

For MF lenses just use the Green Hexagon/Beep




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Comment by Algernon posted on Focusing manual lenses on K5? at 09/12/2012 - 14:52

Algernon
Just like new cars I love the smell of new cameras!

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Comment by Algernon posted on How I arrived at my IIs at 09/12/2012 - 13:11

Algernon
It should do? Just move the view with the 4 way
controller.

Comment by Algernon posted on Displaying two images on the K30 LCD at 09/12/2012 - 11:00

Algernon
andrewk wrote:
......
It's no big deal, but it was convenient - saves having to carry an accurate mental picture of a zoomed version of an image in your head. On replay, you cannot switch directly from a zoomed version of one image to a zoomed image of the same part of another. If you could, there wouldn't be a need for it.
But you Can Do That! I mentioned it above

Comment by Algernon posted on Displaying two images on the K30 LCD at 08/12/2012 - 15:28

Algernon
Buy it so that you can get £100 off a K-3 when you trade it in
Don't use it though it's worth more unused..

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Comment by Algernon posted on Anyone gone from K-5 to K-5II? at 08/12/2012 - 15:25

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