Autofocus Fine Tuning

talisman · 24th July 2008

Hey CS pals,

Anybody has tried the AF fine tuning on the D3/D300?
Any feedback on that?

I'll be trying it out this weekend. Any pointers how you go about?

It seems to be a great feature as I find that, in portraits, it is very difficult to get the exact pinpoint focus on the eyes of the person. It is always a few mm off (when seen at full scale).

Thanks in advance !

ziiz01 · 24th July 2008

I did that on D300 seems great so far
my 50mm f1.8 was tuned to +18...

quite a good feature to apply
you never know the calibration for your individual lens try it.
It may well be of good use

part0 · 25th July 2008

hmmm what do u mean that you tuned to +18 ???

mismis · 25th July 2008

How do you tune it? You shoot at different +/- increments then decide which value gives you optimum sharpness?

tltan · 26th July 2008

got a question to add on. Do you guys use the chart at 45degree? I tried that before on my 80-200 on D70s to find out its backfocusing at 200mm min focusing distance. Some on the net after my research indicated that we shouldnt use the chart at odd angles...but parallel. Thanks in advance

ziiz01 · 26th July 2008

Originally Posted by part0

hmmm what do u mean that you tuned to +18 ???

Try this link http://www.focustestchart.com/chart.html

ziiz01 · 26th July 2008

Originally Posted by mismis

How do you tune it? You shoot at different +/- increments then decide which value gives you optimum sharpness?

Can read this thread http://www.clubsnap.com/forums/showt...af+fine+tuning

talisman · 26th July 2008

Thanks all for ur comments.
Esp, thanks to ziiz01 for the links.

It works wonders!!

ExplorerZ · 26th July 2008

Originally Posted by tltan

got a question to add on. Do you guys use the chart at 45degree? I tried that before on my 80-200 on D70s to find out its backfocusing at 200mm min focusing distance. Some on the net after my research indicated that we shouldnt use the chart at odd angles...but parallel. Thanks in advance

parallel or not, i believe it still have backfocus as far as my experience using that lens.

normally i just do a focus lock and shift my head alittle back. =X

tltan · 26th July 2008

Originally Posted by ExplorerZ

parallel or not, i believe it still have backfocus as far as my experience using that lens. normally i just do a focus lock and shift my head alittle back. =X

thanks. Good idea.

24th July 2008	#1
talisman Member Join Date: Dec 2004 Posts: 280	Autofocus Fine Tuning Hey CS pals, Anybody has tried the AF fine tuning on the D3/D300? Any feedback on that? I'll be trying it out this weekend. Any pointers how you go about? It seems to be a great feature as I find that, in portraits, it is very difficult to get the exact pinpoint focus on the eyes of the person. It is always a few mm off (when seen at full scale). Thanks in advance !

24th July 2008	#2
ziiz01 Member Join Date: Feb 2007 Location: Where the Sun Rise Singapore Posts: 114	Re: Autofocus Fine Tuning I did that on D300 seems great so far my 50mm f1.8 was tuned to +18... quite a good feature to apply you never know the calibration for your individual lens try it. It may well be of good use __________________ Visit my work @ flickR D300 * + *

25th July 2008	#3
part0 Member Join Date: May 2008 Posts: 239	Re: Autofocus Fine Tuning hmmm what do u mean that you tuned to +18 ???

25th July 2008	#4
mismis Member Join Date: Feb 2008 Posts: 207	Re: Autofocus Fine Tuning How do you tune it? You shoot at different +/- increments then decide which value gives you optimum sharpness? __________________ Xti + grip + Really right stuff L-plate.

26th July 2008	#5
tltan Senior Member Join Date: Apr 2005 Posts: 2,329	Re: Autofocus Fine Tuning got a question to add on. Do you guys use the chart at 45degree? I tried that before on my 80-200 on D70s to find out its backfocusing at 200mm min focusing distance. Some on the net after my research indicated that we shouldnt use the chart at odd angles...but parallel. Thanks in advance

26th July 2008	#8
talisman Member Join Date: Dec 2004 Posts: 280	Re: Autofocus Fine Tuning Thanks all for ur comments. Esp, thanks to ziiz01 for the links. It works wonders!!