Still missing focus with my x100s

Started Jun 3, 2013 | Discussions
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zenpmd Senior Member • Posts: 1,130
Still missing focus with my x100s

Can anyone help?

Sometimes when I am taking a shot it finds the background rather than the subject. This seems to happen even in obvious situations where there is good contrast between subject and background.

Does changing the size of the focus point help?

Fujifilm X100S
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il_alexk Senior Member • Posts: 2,322
Re: Still missing focus with my x100s
1

zenpmd wrote:

Sometimes when I am taking a shot it finds the background rather than the subject. This seems to happen even in obvious situations where there is good contrast between subject and background.

Does changing the size of the focus point help?

Yes, setting the size of the focus point to the minimum is the first thing you want to do.

Using EVF/LCD also helps when focusing on very close objects.

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zenpmd OP Senior Member • Posts: 1,130
Re: Still missing focus with my x100s
2

I thought someone somewhere else said that a small focus point will slow focus overall? Is that true? Are you recommending just always having the small focus point all the time?

Has anyone compiled a list of the most sensible fuji settings?

Thanks!

Toccata47 Senior Member • Posts: 2,799
Re: Still missing focus with my x100s

zenpmd wrote:

I thought someone somewhere else said that a small focus point will slow focus overall? Is that true? Are you recommending just always having the small focus point all the time?

Has anyone compiled a list of the most sensible fuji settings?

Thanks!

Yes, smallest focus patch all the time.

Keit ll Senior Member • Posts: 3,947
Re: Still missing focus with my x100s
2

The speed of AF should be a secondary consideration when miss-focus occurs !

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Keith C

smatty Senior Member • Posts: 1,976
Read this...
3

Take the time to read these focus tipps concerning the Fuji X-Cameras. It should help you to improve the AF accuracy

http://fujixfiles.blogspot.com/2012/08/fuji-x-pro-1-af-autofocus-speed-and.html

Cheers,
Smatty
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Asylum Photo
Asylum Photo Senior Member • Posts: 1,277
Re: Still missing focus with my x100s
2

il_alexk wrote:

zenpmd wrote:

Sometimes when I am taking a shot it finds the background rather than the subject. This seems to happen even in obvious situations where there is good contrast between subject and background.

Does changing the size of the focus point help?

Yes, setting the size of the focus point to the minimum is the first thing you want to do.

Using EVF/LCD also helps when focusing on very close objects.

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This completely depends on the subject you are focusing on.

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Jeff Charles Veteran Member • Posts: 7,514
Re: Read this...

smatty wrote:

Take the time to read these focus tipps concerning the Fuji X-Cameras. It should help you to improve the AF accuracy

http://fujixfiles.blogspot.com/2012/08/fuji-x-pro-1-af-autofocus-speed-and.html

That's a good summary. His suggestion to fully press the shutter button without waiting for focus confirmation isn't intuitive, but it works with the X100 too. One addition: AF-C is better in very low light.

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Jeff
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il_alexk Senior Member • Posts: 2,322
Can you be more specific?

Asylum Photo wrote:

il_alexk wrote:

Yes, setting the size of the focus point to the minimum is the first thing you want to do.

This completely depends on the subject you are focusing on.

Iv'e checked your album and it looks like you do know how to handle the camera :).

I wonder if you can give an example of the subject where large AF point would be more accurate than the small one.

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Jeff Charles Veteran Member • Posts: 7,514
Re: Can you be more specific?

il_alexk wrote:

Asylum Photo wrote:

il_alexk wrote:

Yes, setting the size of the focus point to the minimum is the first thing you want to do.

This completely depends on the subject you are focusing on.

Iv'e checked your album and it looks like you do know how to handle the camera :).

I wonder if you can give an example of the subject where large AF point would be more accurate than the small one.

I don't think a larger focus frame will ever by more accurate, but it can help focus acquisition, because there's more likely to be something of high enough contrast in the larger frame. The tradeoff is that a bigger frame may focus on a background object when the frame extends beyond the intended subject.  I usually keep mine set to one bigger than the smallest, and I reduce it when I need more precision.

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smatty Senior Member • Posts: 1,976
Re: Read this...

Jeff Charles wrote:

That's a good summary. His suggestion to fully press the shutter button without waiting for focus confirmation isn't intuitive, but it works with the X100 too. One addition: AF-C is better in very low light.

Yes, with the X100s the AF-C does work better than on the old X100. But since you can't move the central focus point in AF-C I find this mode difficult to compose the image with...

Cheers,
Smatty
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il_alexk Senior Member • Posts: 2,322
Re: Can you be more specific?

Jeff Charles wrote:

il_alexk wrote:

Asylum Photo wrote:

il_alexk wrote:

Yes, setting the size of the focus point to the minimum is the first thing you want to do.

This completely depends on the subject you are focusing on.

Iv'e checked your album and it looks like you do know how to handle the camera :).

I wonder if you can give an example of the subject where large AF point would be more accurate than the small one.

I don't think a larger focus frame will ever by more accurate, but it can help focus acquisition, because there's more likely to be something of high enough contrast in the larger frame. The tradeoff is that a bigger frame may focus on a background object when the frame extends beyond the intended subject.  I usually keep mine set to one bigger than the smallest, and I reduce it when I need more precision.

Thanks, makes sense :).

In this case I still find it easier (for me, of course) to keep the AF area as small as possible to get the best accuracy. Instead of enlarging the focusing area, I just lock focus with half-press on whatever contrast area is available, and then re-frame before the shot. Needless to say, I'm using central AF point in 99.9% of all cases.

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zenpmd OP Senior Member • Posts: 1,130
Re: Can you be more specific?

So the AF point should be in the middle and set to "area" in the menu rather than "multi" right?

il_alexk Senior Member • Posts: 2,322
Re: Can you be more specific?

zenpmd wrote:

So the AF point should be in the middle and set to "area" in the menu rather than "multi" right?

Yes, see page 48 with your user manual.

/Alex

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zenpmd OP Senior Member • Posts: 1,130
Re: Can you be more specific?

got you, mine was alreday set to that.

The issue occures when I am photographing something which is not filling the frame in its entirety, so I will try the smaller area and see how that works

trseattle Forum Member • Posts: 87
Re: Still missing focus with my x100s

I had the same problem repeatedly with my X100s and sold it.  I purchased a used X Pro1 and I am now getting about a 95% focus accuracy rate with the latest firmware installed.  Only occasionally mis-focuses.

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zenpmd OP Senior Member • Posts: 1,130
Re: Still missing focus with my x100s

Tr - I agree, my x-e1 seemed to be better. How can this possibly be?

nand
nand Senior Member • Posts: 2,664
Try this.

It is important to have contrast (detail) in the subject that you want to have in focus. Not the edge between the subject and the background. If possible, keep the background out of the focus box.

When both fore and background within the focus box have contrast (detail), the camera will generally pick the foreground to focus on.

When in the focus box, the foreground is flat without contrast and the background has contrast (detail), the camera will focus on the background.

Even in poor light and low contrast, using the above suggestions, I can focus lock consistently. (1/2 sec @ f:4 @ ISO 6400)

Nand.

zenpmd wrote:

Can anyone help?

Sometimes when I am taking a shot it finds the background rather than the subject. This seems to happen even in obvious situations where there is good contrast between subject and background.

Does changing the size of the focus point help?

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