85 1.4 or 1.8 focus performance for sports

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I also posted this in the sports section also.

I'm looking for a faster lens for indoor gymnastics then my 70-200 2.8. Looking back at my shoots looks like the 85mm will be verstile enough with crop to get the range I need. The 200 f2 is too long, too big and most of all tooo expensive.

Any one can give me a feel for the focus of this lense, and difference between the 1.4 and 1.8? Most likely I'll shoot it at f2. Will it just be too slow to even think about using?

Thx
 
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What kind of exercises are you talking about?

I would think that stationary stuff like rings and pommel horse would be fine. If you're talking running/vaulting it might not.

I've never tried this subject, but hopefully someone who has will chime in for you.
 
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What kind of exercises are you talking about?

I would think that stationary stuff like rings and pommel horse would be fine. If you're talking running/vaulting it might not.

I've never tried this subject, but hopefully someone who has will chime in for you.
Shooting rythmic so yes they are all moving, combine that with their spinning hoop, throwing ball, or ribbon and its a real challenge to get focus and freeze the motion. :frown: With the 70-200 2.8 when they are running I'd say 1/3 of the pictures are blurred. At a couple meets I've seen the contracted Pros shooting fixed focal and higher shutter speed and that will be the experiment this time around. May look to get another body D300 used/borrow and try the fixed focal and shoot 1/500 or faster.
 
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Being a screw drive lens the 85mm focus speed will depend somewhat on the body you're shooting with. On a low end body like the D50 I doubt it'd be anything impressive, on a flagship model like the F5 the additional motor torque will push things around with considerably more speed.
 
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It is ok, see this one, taken on D300 in 3Dmode which is rubbish, since than learned to focus even better.

Subscribe to see EXIF info for this image (if available)


B&W is due to extremly poor illumination, frozen at 1/500sec

For other similar see flickr link
 
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It is ok, see this one, taken on D300 in 3Dmode which is rubbish, since than learned to focus even better.

B&W is due to extremly poor illumination, frozen at 1/500sec

For other similar see flickr link
What is your trick to focus?
 
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I also posted this in the sports section also.

I'm looking for a faster lens for indoor gymnastics then my 70-200 2.8. Looking back at my shoots looks like the 85mm will be verstile enough with crop to get the range I need. The 200 f2 is too long, too big and most of all tooo expensive.

Any one can give me a feel for the focus of this lense, and difference between the 1.4 and 1.8? Most likely I'll shoot it at f2. Will it just be too slow to even think about using?

Thx

I have heard that the 85 1.8 is faster to focus w/ it having rear focus. I've seen some nice Basketball pic's with the 1.8.

Check out this pic's (not mine) from the 1.8,
http://www.pbase.com/jeffpatch/mbball10607
http://www.pbase.com/jeffschryver/mhs_volleyball
 
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What is your trick to focus?
There is no trick, you just point and shoot, i would say i get best results in AF-C and Single Point, some do get out of focus others are ok.

DOF is shallow and i was some distance away, bear in mind that above picture is either fully open or no more than f2.

Picture above was taken with 85 f1.4, i used to have 85 f1.8 which was also good to focus but NAS took better of me.
 
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One more...only i wish i had than D700 and 200mm f2

Subscribe to see EXIF info for this image (if available)


For EXIF peepers

Camera: Nikon D300
Exposure: 0.002 sec (1/500)
Aperture: f/1.4
Focal Length: 85 mm
Exposure Bias: 0/6 EV

Orientation: Horizontal (normal)
X-Resolution: 72 dpi
Y-Resolution: 72 dpi
Software: Adobe Photoshop Elements 5.0 Windows
Date and Time: 2008:06:24 00:03:25
YCbCr Positioning: Co-Sited
Exposure Program: Shutter priority
Date and Time (Original): 2008:06:21 11:04:01
Date and Time (Digitized): 2008:06:21 11:04:01
Compressed Bits per Pixel: 1 bits
Maximum Lens Aperture: 10/10
Metering Mode: Pattern
Sub-Second Time: 17
Sub-Second Time (Original): 17
Sub-Second Time (Digitized): 17
Color Space: sRGB
Sensing Method: One-chip colour area sensor
CFA Pattern: RED GREEN GREEN BLUE
Custom Rendered: 1
Digital Zoom Ratio: 1/1
Focal Length In 35mm Film: 127
Gain Control: High gain up
Compression: JPEG
XMP Date and Time (Original): 2008-06-21T11:04:01+01:00
Image Width: 2693 pixels
Image Height: 3366 pixels
 
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There is no trick, you just point and shoot, i would say i get best results in AF-C and Single Point, some do get out of focus others are ok.
Thanks. So I gather this works better than Dynamic AF.
 
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Thanks. So I gather this works better than Dynamic AF.
At the time i took those shots i used 3D tracking and following another session in better light decided not to use it again as keeper rate was low. Currently i select single focusing point and shoot in either AF-C for fast moving or AF-S for moving subects.

Here at Cafe there are much better experts than me to advise on good focusing practice.
 
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All, thanks for your responses! A good friend is going to be lending me his 85 1.4 and maybe his 200 F2 ( I know it'll be too long but can't deny the test ).

Cheers
 
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Syracuse, NY
Not to wander too far afield, but I've heard that the 135 and 105 f/2 Dc lenses might work very well for indoor sports, if the focal lengths fit your venues and style. I find mine to be quite sharp wide open.

Dave Harris
 
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