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Messages - Shawn L

Pages: 1 2 [3] 4 5 ... 7
31
Lenses / Re: New 24-70 II, maybe AFMA will help?
« on: November 08, 2012, 10:48:27 AM »
Ah, thank you, Neuroanatomist et al.

I did a quick test before work with a yardstick tilted at what I hoped was 45 degrees. The results were a bit inconclusive as nothing felt any sharper than my intended focus area, and that still felt soft.

I'll try the other test tonight or tomorrow.

Cheers.

Shawn L.

32
Lenses / Re: New 24-70 II, maybe AFMA will help?
« on: November 08, 2012, 08:59:21 AM »
Good idea. Thank you, Ben.

Shawn L.

33
Lenses / New 24-70 II, maybe AFMA will help?
« on: November 08, 2012, 12:13:59 AM »
Just got a new 24-70 II and I must say that my initial images are, well, disappointing. I was hoping for something along the lines of the ridiculous sharpness of the 70-200 II. Sadly, what I'm seeing is much closer to my 28-135.

If you look at this .cr2 file in DPP (http://home.comcast.net/~sal6/BY5R6357.CR2), you'll see the focus point is the white and purple cluster of flowers. However none of the flowers in that cluster are what I would consider remotely sharp -- this was taken at 70 mm, 1/320 sec, with f/2.8, ISO 100. With those, I don't think it's the lack of IS.

All of the photos I've taken are like this, without regard to shutter speed (even up through 1/2000 @ f/2.8 (ISO 150)) -- also,  this is actually one of the sharper ones.

Maybe AFMA will help. But I'd (naively?) expect an AFMA problem would mean that something, somewhere in the image would be sharper. I suppose it's possible that there's nothing at the right depth...

Thoughts?

Shawn L.

34
EOS Bodies / Re: Official DXOMark Sensor Score for the EOS-1D X
« on: October 31, 2012, 10:51:03 AM »
Quote
But neither is a dedicated Nikon shooter going to run and buy the Canon 1D X.


Um, wrong (at 16:15):
÷žė Small | Large


1) Green D4
2) AF on Canon

:)

Shawn L.

36
Lenses / Re: 70-200 f/2.8 II + 2X converter versus 100-400 f/4.5-5.6
« on: October 20, 2012, 02:40:45 PM »
Thanks, mhvogel.de.

Shawn L.

37
Lenses / Re: 70-200 f/2.8 II + 2X converter versus 100-400 f/4.5-5.6
« on: October 20, 2012, 02:30:05 PM »
Thanks for the info, NatureShots & Mikael.

Shawn L.

38
Lenses / Re: 70-200 f/2.8 II + 2X converter versus 100-400 f/4.5-5.6
« on: October 20, 2012, 12:59:46 PM »
Thanks, Neuro :)

Shawn L.

39
Lenses / 70-200 f/2.8 II + 2X converter versus 100-400 f/4.5-5.6
« on: October 20, 2012, 11:44:42 AM »
I rented the 100-400 mm for a trip to the San Diego zoo, and thought it was a really nice lens. In terms of utility, though, I'm not sure I have a day-to-day need for it (though need & want aren't always correlated).

As I already own the 70-200 F/2.8 II, I'm wondering if getting the 2X converter is a viable option.

I believe Neuro has previously written that the quality of the 70-200 + 2x is comparable with that of the 100-400. Does anyone have any experience with how fast/accurate the AF when compared?

Moreover, has anyone made this decision before and either been really happy with it or wished they'd made a different choice?

Thanks :)

Shawn L.

40
EOS Bodies / Re: 1DX lock up?
« on: October 18, 2012, 02:17:37 PM »
Thanks, exphose. I had also written a Perl script that copied large files to the card until it was filled. Didn't run into any issues with the card. That, of course, doesn't rule out weird interactions between the card and camera.

But I'll note that I've not seen the issue with the replacement 1DX I have (knock on wood) using the same cards I had before -- I've even filled them up during a shoot.

Shawn L.

41
EOS Bodies - For Stills / Re: 1dx, or d800e?
« on: October 16, 2012, 03:17:34 PM »
I suspect it has to do with the circle of confusion calculations: http://en.wikipedia.org/wiki/Circle_of_confusion

Here are CoC values for some cameras: http://www.dofmaster.com/digital_coc.html

The more densely packed the sensor, the smaller a circle of confusion you can resolve, the smaller the DOF (hoping I parsed that right; figuring if I didn't, someone will correct me, though :))

Shawn L.

42
EOS Bodies / Re: 1DX lock up?
« on: October 06, 2012, 09:56:55 AM »
Seems the 32 GB LEXAR 1000x is at least a small factor in the lockups! maybe that's why they are ON sale at BH.

Maybe. Card I/O is asynchronous, I wouldn't expect it to lock up the camera. When I saw the issue, the shutter got stuck open. Thus, I wonder if perhaps the new shutter mechanism might have some quirks that haven't been fully worked out, or if maybe some of them have manufacture defects.

Shawn L.

43
EOS Bodies / Re: 1DX lock up?
« on: October 05, 2012, 12:51:13 PM »
As a note, the lock-up seen here has happened with both Lexar cards (me, 1000X cards) and SanDisk (Mark). Here's his post:

The red light was on for almost the entire shoot, I'm using Sandisk 64gb and 32gb Extreme Pro cards.

Shawn L.

44
EOS Bodies / Re: 1dX dust in viewfinder
« on: October 02, 2012, 02:20:16 PM »
Thanks, Darrin.

Shawn L.

45
EOS Bodies / Re: 1dX dust in viewfinder
« on: October 02, 2012, 01:21:36 AM »
Thank you, neuroanatomist.

Shawn L.

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