setting focal length mc zenitar 16mm 2.8 fisheye lens into pentax k-x

jheeno · 01-05-2010, 04:50 AM

hey all
might be a silly question
when installing an mc zenitar 16mm 2.8 fisheye lens into pentax k-x

after I switch it on it asks for a focal length

the closest option is 15 mm

does it matter ?
is that the right setting ?

photos turn out alright

Diffusion · 01-05-2010, 05:32 AM

Yes, you always want to select the closest focal length.
1 mm difference should be ok, even though it is the wide end.

Wheatfield · 01-05-2010, 06:31 AM

Select the closest focal length that is smaller than the actual one if there isn't an option for the actual.

01-05-2010, 04:50 AM	#1
jheeno New Member Join Date: Dec 2009 Location: sydney Posts: 12	setting focal length mc zenitar 16mm 2.8 fisheye lens into pentax k-x hey all might be a silly question when installing an mc zenitar 16mm 2.8 fisheye lens into pentax k-x after I switch it on it asks for a focal length the closest option is 15 mm does it matter ? is that the right setting ? photos turn out alright

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01-05-2010, 05:32 AM	#2
Diffusion Forum Member Join Date: Dec 2009 Posts: 74	Yes, you always want to select the closest focal length. 1 mm difference should be ok, even though it is the wide end.

01-05-2010, 06:31 AM	#3
Wheatfield Moderator Join Date: Apr 2008 Location: The wheatfields of Canada Posts: 15,991	Select the closest focal length that is smaller than the actual one if there isn't an option for the actual.