D300 Auto Focus Problem

[ahguan]

I noticed my Tamron 17-50 focus was a little so decided to play around with the AF adjust. Stacked a bunch of game boxes staggered front to back and took a series of shots.

this is the setup image



this is the close up of the focus points. I am picking -15 for my tammy copy

 

[scaredcloud]

I noticed my Tamron 17-50 focus was a little so decided to play around with the AF adjust. Stacked a bunch of game boxes staggered front to back and took a series of shots.

this is the setup image



this is the close up of the focus points. I am picking -15 for my tammy copy

Good for you! :thumbsup:
suddenly, no more lemon copy! :lovegrin:

 

[adrianng]

Since somebody brought out the issue of focusing,
although not directly related, I would like to share some of my experience here:

I've been facing some problem with the sharpness of the photo,
so I tried to check the focus and did some fine tuning on the D300.
here's the outcome,

1) 85 1.4 => -4 and image is now tact sharp.
2) 17-55 => +9 and image is now tact sharp.
3) 50 1.4 => No adjustment needed.
4) 12-24 => No adjustment needed.
5) 18-70 => +2 and image is now tact sharp.
6) 70-300 => Not check yet
7) 60 2.8 => Not checked yet

These are my experience on my copy though.
Anybody like to share your settings?

Hi,

I am curious that all the AF fine tuning is usually done at which aperture??

Meaning after fine tuning at a particular aperture, eg. F8, will all other aperture setting also have the improved sharpness?

Thanks

 

[scaredcloud]

Hi,

I am curious that all the AF fine tuning is usually done at which aperture??

Meaning after fine tuning at a particular aperture, eg. F8, will all other aperture setting also have the improved sharpness?

Thanks

I'm not sure about others, but i do it wide open, with the most shallow DOF.
after that, I only check with f/5.6 to double confirm.
It should works throughout in theory though, since it is just expansion of DOF when you stop down.

 

[adrianng]

I'm not sure about others, but i do it wide open, with the most shallow DOF.
after that, I only check with f/5.6 to double confirm.
It should works throughout in theory though, since it is just expansion of DOF when you stop down.

Thanks for ur comments..

I think this nice feature has given me another reason to get D300.. =)

Still saving up..

 

[koheric01]

My problem is with respect to a D200 with 17-55mm F2.8 setup...

U see, for the previous setup (D200), I used to have one shot one kill reaction but with the new setup (D300) i CANNOT even fire off the camera after focusing on the subject. No body having the same problem? Don't tell me I am one of the lucky soul to have a defective body out of the 1st batch...

KAS

 

[mrbinks76]

My problem is with respect to a D200 with 17-55mm F2.8 setup...

U see, for the previous setup (D200), I used to have one shot one kill reaction but with the new setup (D300) i CANNOT even fire off the camera after focusing on the subject. No body having the same problem? Don't tell me I am one of the lucky soul to have a defective body out of the 1st batch...

KAS

Does the focus lock (and you get the confirmation beep?
Does it work focus and fire with other lens?

 

[mrbinks76]

just like to check:

after the fine tuning has been stored in the camera, when you attach the lens on the body, will the camera auto detect or do you have to call up the menu and tell them the lens u are attaching on now ?

Hi Eric,
It autodetects. Works on Nikkor lens as well as 3rd party.

However, if you have more than one copy of a particular lens ( e.g. 2 x 50 1.8) , it cannot differentiate between the 2.

 

[euphosis]

Since somebody brought out the issue of focusing,
although not directly related, I would like to share some of my experience here:

I've been facing some problem with the sharpness of the photo,
so I tried to check the focus and did some fine tuning on the D300.
here's the outcome,

1) 85 1.4 => -4 and image is now tact sharp.
2) 17-55 => +9 and image is now tact sharp.
3) 50 1.4 => No adjustment needed.
4) 12-24 => No adjustment needed.
5) 18-70 => +2 and image is now tact sharp.
6) 70-300 => Not check yet
7) 60 2.8 => Not checked yet

These are my experience on my copy though.
Anybody like to share your settings?

May I know what the + and - means?? as in + is to increase sharpness and - is to decrease sharpness? sorry if this sound stupid.

As the meter in D300 show up to +20 and down to -20. Do I have to try out every stop to get a good sharp pic??

 

[ahguan]

+ means the focus point is moved further away from the camera
- means moved closer

for my case i shot 1 pic at 0, and judge from the image whether the camera is focusing front or rear (i staggered my subjects at varying distances for this. see above). then from here i tested at intervals of 5. doesn't take long really

May I know what the + and - means?? as in + is to increase sharpness and - is to decrease sharpness? sorry if this sound stupid.

As the meter in D300 show up to +20 and down to -20. Do I have to try out every stop to get a good sharp pic??

 

[swimcraze]

Hi guys...

I am a photographer for wedding. I am now using the D300 and 17-55mm F2.8 DX len for shooting. I find that auto focus is a bit slow with the current firmware...

Anyone experience this?

Thanks.

KAS

hi,

i was down at the nikon showroom today with my d200. i had the same set up for both d200 and d300 and find that the AF for D200 is faster than the D300 as D300 takes a longer time to evulation the scene. If i change it to spot metering, the problem disappears. Anyone has the same experience? pls share ? thanks.

 

[vince123123]

The feature to correct focussing is damn good...if they had that, I won't have dumped my front focussed D200 (which NSC tried 3 times and failed to fix)

Just wondering, is there a maximum + or - value one can go to?

 

[ahguan]

The feature to correct focussing is damn good...if they had that, I won't have dumped my front focussed D200 (which NSC tried 3 times and failed to fix)

Just wondering, is there a maximum + or - value one can go to?

+- 20

 

[vince123123]

Ah I sure hope 20 is enough to correct most, if not all, cases of back/front focussing.

 

[calebk]

Do note that the focus adjustment is dependent on individual lenses; different copies of the same lens will have to be adjusted differently due to copy variation.

 

[nikkie]

hi,

i was down at the nikon showroom today with my d200. i had the same set up for both d200 and d300 and find that the AF for D200 is faster than the D300 as D300 takes a longer time to evulation the scene. If i change it to spot metering, the problem disappears. Anyone has the same experience? pls share ? thanks.

AF vs metering?
spot metering can improve AF speed?
how so? care to elaborate?

 

[swimcraze]

AF vs metering?
spot metering can improve AF speed?
how so? care to elaborate?

you may wish to read some discussions here:

http://www.photo-forums.com/WebX?50@@.eea70c5/0

 

[Keith37]

Since somebody brought out the issue of focusing,
although not directly related, I would like to share some of my experience here:

I've been facing some problem with the sharpness of the photo,
so I tried to check the focus and did some fine tuning on the D300.
here's the outcome,

1) 85 1.4 => -4 and image is now tact sharp.
2) 17-55 => +9 and image is now tact sharp.
3) 50 1.4 => No adjustment needed.
4) 12-24 => No adjustment needed.
5) 18-70 => +2 and image is now tact sharp.
6) 70-300 => Not check yet
7) 60 2.8 => Not checked yet

These are my experience on my copy though.
Anybody like to share your settings?

Thanks. Just brought my 17-55, and had to finetune the focus to +9 to be tack sharp. Thot that I got a lemon when i do not need to adjust my 50 1.4.

Glad to know that this is common. Anyway, will still bring the lens and cam down to the service centre on tuesday and see what they say.

BTW, do your lens (17-55) get a little bit dimmer or noiser wide open when when you adjust it the focus to +9?

Thanks in advance.

 

[D100S]

Anyone done d300 af finetune with 70-200mm 2.8? I've tried and never seemed to get it right... Maybe my old flower eyes making me see things not the right way!

 

[satan_18349]

Yap... fine tune +10 for mine...