More about improvement XT3 FW4

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baobob
baobob Forum Pro • Posts: 15,481
More about improvement XT3 FW4
5

Despite the lack of field crowd or event I conducted my usual quick and dirty test of eye detection using simply my excellent 4k big LG TV set. This is a quite severe test since the image is flat and definition at 100% pixel is not as sharp as in real life

That said the eye detection using this environment is really night and day as compared  with the before FW4 period..

Even with a lens which is not fast (18-135mm  was fitted already on the body) the results are very good and one can expect probably around 70% tack sharp results

When several faces are in the same plan you get the choice

The stability is also greatly improved

Will test with my 50mm f2 and report

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Morris0
Morris0 Forum Pro • Posts: 17,773
Re: More about improvement XT3 FW4

baobob wrote:

Despite the lack of field crowd or event I conducted my usual quick and dirty test of eye detection using simply my excellent 4k big LG TV set. This is a quite severe test since the image is flat and definition at 100% pixel is not as sharp as in real life

That said the eye detection using this environment is really night and day as compared with the before FW4 period..

Even with a lens which is not fast (18-135mm was fitted already on the body) the results are very good and one can expect probably around 70% tack sharp results

When several faces are in the same plan you get the choice

The stability is also greatly improved

Will test with my 50mm f2 and report

I'm glad you find the face/eye tracking better.  I've never had an issue with it using 18-135, 50mm f2, 90mm f2.  I noticed no difference when I tested yesterday with my 50mm f2 as it continues to nail AF on an eye and then track the eye as the subject moves or I recompose.

Morris

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baobob
OP baobob Forum Pro • Posts: 15,481
improvement XT3 FW4 with the 50mmf2 at f2
1

Not night and day vs 18-135mm but more sensitive, quicker and more stable

Sure in the field in real life will be much much better than before FW4

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baobob
OP baobob Forum Pro • Posts: 15,481
Re: More about improvement XT3 FW4

Before I found it rather lazy but I guess the speed is highly dependant on light contrast colors

BTW with the 80mm macro at 2.8 it is slower, as expected with a macro lens

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William Loney
William Loney Regular Member • Posts: 342
Re: More about improvement XT3 FW4
2

baobob wrote:

Despite the lack of field crowd or event I conducted my usual quick and dirty test of eye detection using simply my excellent 4k big LG TV set. This is a quite severe test since the image is flat and definition at 100% pixel is not as sharp as in real life

That said the eye detection using this environment is really night and day as compared with the before FW4 period..

Even with a lens which is not fast (18-135mm was fitted already on the body) the results are very good and one can expect probably around 70% tack sharp results

When several faces are in the same plan you get the choice

The stability is also greatly improved

Will test with my 50mm f2 and report

Did a similar test, but thought I'd try for worst possible conditions:

16 1.4 @1.4, with the subject about 4m away, and positioned at the extreme edge of the frame.

Surprisingly, my results were quite similar to yours: about 70% excellent results.

If nothing else, this shows me that my wife might actually be a TV set! 

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Morris0
Morris0 Forum Pro • Posts: 17,773
Re: More about improvement XT3 FW4

baobob wrote:

Before I found it rather lazy but I guess the speed is highly dependant on light contrast colors

BTW with the 80mm macro at 2.8 it is slower, as expected with a macro lens

Slower aperture yes.  Slower Focus?

Morris

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baobob
OP baobob Forum Pro • Posts: 15,481
Re: More about improvement XT3 FW4

I just set AF to full which will be  the case in the field

In fact I just test FL 55mm withn the 18-135mm then the XF 50mm f2 so may be the FL (angle of view) does matter in the eye recognitions ?? if this is true  it would be advisable not to use such FL in events if eye recognition is needed

I need real  field experience to draw any valid conclusion For the moment it is just an hypothesis

May be more experienced posters could discuss that point

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Tom Schum
Tom Schum Forum Pro • Posts: 10,292
Re: More about improvement XT3 FW4

My only Fuji lens is a 50mm F2 WR. I upgraded my X-T3 to v4.00 and went out in the rain shooting.

It focused on the white water in a flash. That is, when I half-pressed the shutter release there was a little flash in the viewfinder and it was focused. Very quick, and as you can see below plenty accurate!

10mb download for full-res. This is normally a quiet creek but it's been raining all day here in DC. A still image cannot begin to capture the dynamic vigor of this scene.

PS I tried other scenes and focus was equally quick, but no flash in the viewfinder.  If anyone has seen this autofocus flash (it's very brief) please let me know.  I want to be sure it was not an illusion!

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baobob
OP baobob Forum Pro • Posts: 15,481
Re: More about improvement XT3 FW4
1

I'll try and report

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baobob
OP baobob Forum Pro • Posts: 15,481
Re: More about improvement XT3 FW4

No flash ! May be just a reflection while focusing..

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Tom Schum
Tom Schum Forum Pro • Posts: 10,292
Re: More about improvement XT3 FW4

baobob wrote:

No flash ! May be just a reflection while focusing..

I need to try it again and look more carefully for a brief flash.  Probably just an illusion though.

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