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Fuji EX1 evaluation - Page 2

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Posted: Fri Jan 11th, 2013 12:43

11^th Post

Eric

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I have often found that a lens focused at one end of its range isnt necessariloy in focus aTomOC wrote: I definitely agree with the comments on slowing down.

One way to drive that home is to use the manual settings. I find that my eyesite, even with a diopter isn't quite good enough in many lighting conditions to just "focus" manually - I really need the zoom up to focus correctly. Now, maybe that comes from years of using Nikon zooms and zooming to focus or maybe it is just that I am rusty at manual focusing. I'm going to try to figure that out over the next few weeks by focusing first and then zooming to see if I was accurate :-)

Probably will be quite humbling, at least at first. :-)

I have often found that a zoom focused at one end of its range doesnt necessarily hold the same focus at the other. Maybe thats using cheap lenses. ;-)

Although I experienced this issue when using the onboard focus adjustment feature as well. You can get one end of the zoom perfect...then loose the other. I ended up setting at a happy medium between the two.

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Eric

Posted: Fri Jan 11th, 2013 13:45

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Most zooms do not hold focus as either end of the zoom range. To do so they have to be specifically designed to achieve this and are called 'parfocal' zooms.
Like Tom says with AF this tends to manage the focus so it doesnt matter.

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Posted: Fri Jan 11th, 2013 15:12

13^th Post

Eric

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jk wrote:
Most zooms do not hold focus as either end of the zoom range. To do so they have to be specifically designed to achieve this and are called 'parfocal' zooms.
Like Tom says with AF this tends to manage the focus so it doesnt matter.

I thought Tom was trying to manual focus using this technique?

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Eric

Posted: Fri Jan 11th, 2013 15:21

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Eric wrote:
jk wrote:
Most zooms do not hold focus as either end of the zoom range. To do so they have to be specifically designed to achieve this and are called 'parfocal' zooms.
Like Tom says with AF this tends to manage the focus so it doesnt matter.

I thought Tom was trying to manual focus using this technique?

Yes he was . What I was trying to say is that he was attempting to do wont work unless the has a parfocal zoom lens.

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Posted: Fri Jan 11th, 2013 15:35

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Squarerigger

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It's ashamed Steve is no longer active on the forum, I could ask him to have Dylan make a new emotion. One with a shocked face and the subject matter just flying over my head.

Parafocal and the like. :rofl:

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Gary

Posted: Fri Jan 11th, 2013 15:37

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Eric

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jk wrote:
Eric wrote:
jk wrote:
Most zooms do not hold focus as either end of the zoom range. To do so they have to be specifically designed to achieve this and are called 'parfocal' zooms.
Like Tom says with AF this tends to manage the focus so it doesnt matter.

I thought Tom was trying to manual focus using this technique?

Yes he was . What I was trying to say is that he was attempting to do wont work unless the has a parfocal zoom lens.

Understand.

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Eric

Posted: Fri Jan 11th, 2013 15:40

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Eric

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Squarerigger wrote:
It's ashamed Steve is no longer active on the forum, I could ask him to have Dylan make a new emotion. One with a shocked face and the subject matter just flying over my head.

Parafocal and the like. :rofl:

It's the opposite of a Varifocal lens....as in Varifocal spectacles. ;-)

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Eric

Posted: Fri Jan 11th, 2013 16:13

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For Gary.
Better than an emoticon.
http://en.wikipedia.org/wiki/Parfocal_lens

Should have put the reference link before.
:-)

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Posted: Fri Jan 11th, 2013 16:34

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Eric

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Perhaps this one would do.....

:wtf:

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Eric

Posted: Sat Jan 12th, 2013 00:53

20^th Post

Constable

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Jk

What are you using for xp1 raw conversion? I see over on the fuji forum that you seem to be recommending silkypix

Ed

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