Pentax 18-135 Lens Focus through Zoom Range

nstocke · 02-05-2011, 12:26 PM

Hopefully just a quick question. I have the Pentax 18-135mm DA Lens. Should it maintain the focus through the zoom range or should I have to re-focus as I zoom in or out? I know on some zoom lenses once you focus you can zoom in or out and it will maintain focus. On this lens I have to focus every time I change the zoom range. Is that normal?

Thanks

the swede · 02-05-2011, 12:28 PM

Its normal for this kind of lens class.

Ed n Georgia · 02-05-2011, 12:32 PM

Originally posted by nstocke

Hopefully just a quick question. I have the Pentax 18-135mm DA Lens. Should it maintain the focus through the zoom range or should I have to re-focus as I zoom in or out? I know on some zoom lenses once you focus you can zoom in or out and it will maintain focus. On this lens I have to focus every time I change the zoom range. Is that normal?

Thanks

Yes. it's normal....

nstocke · 02-06-2011, 10:47 AM

Thanks for the quick responses.

02-05-2011, 12:26 PM	#1
nstocke Inactive Account Join Date: Jan 2010 Location: Kaysville, Utah Posts: 7	Pentax 18-135 Lens Focus through Zoom Range Hopefully just a quick question. I have the Pentax 18-135mm DA Lens. Should it maintain the focus through the zoom range or should I have to re-focus as I zoom in or out? I know on some zoom lenses once you focus you can zoom in or out and it will maintain focus. On this lens I have to focus every time I change the zoom range. Is that normal? Thanks

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02-05-2011, 12:28 PM	#2
the swede Inactive Account Join Date: Aug 2009 Posts: 2,310	Its normal for this kind of lens class.

02-05-2011, 12:32 PM	#3
Ed n Georgia Veteran Member Join Date: Dec 2009 Location: Georgia Posts: 940	Originally posted by nstocke Hopefully just a quick question. I have the Pentax 18-135mm DA Lens. Should it maintain the focus through the zoom range or should I have to re-focus as I zoom in or out? I know on some zoom lenses once you focus you can zoom in or out and it will maintain focus. On this lens I have to focus every time I change the zoom range. Is that normal? Thanks Yes. it's normal....

02-06-2011, 10:47 AM	#4
nstocke Inactive Account Join Date: Jan 2010 Location: Kaysville, Utah Posts: 7 Original Poster	Thanks for the quick responses.

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