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Messages - neuroanatomist

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EOS Bodies / Re: Your Canon EOS-1D X user tips
« on: August 18, 2012, 05:35:13 AM »
Did you measure the line on the target and enter that value in the optimization setup? 

With the 7D and 5DII, the distance wasn't that accurate either, but the results were valid.

EOS Bodies / Re: Your Canon EOS-1D X user tips
« on: August 18, 2012, 05:12:46 AM »
Haven't tried it yet.  No real need, since I did almost all my lenses already with full manual.  The only calibrations I haven't done are the 70-200 II with the TCs (and actually, I just sold my 1.4x II and ordered a 1.4x III that hasn't shipped yet).  I'll probably give it a try within a couple of weeks. 

Question - once you got it to work, how long did a single run take you?  Taking the 83 shots I capture for a full manual set takes me about 10 min.

EOS Bodies / Re: Pls Advise on testing a 7D on CL
« on: August 17, 2012, 04:56:45 PM »
Do you need the lens?  I suppose you could sell it - they are common, but if you price it at $150 it may sell. 

FWIW, on my local CL, there are 7D's ranging from $900 to $1100, and the $1100 ones (there are two) include either a 28-135 lens or the BG-E7 grip.

As for testing, if you can, bring a laptop with EOSInfo (40D shutter count on Mac) to connect and test shutter count, you can grab a tethered shot and immediately look at 100% mag, check the battery status in the menu (my 7D is from 2010 and both batteries still show three bars, but my 5DII was 6 months younger, and both batteries were down to two bars).  Bring a lens of your own, one you know is sharp and centered, and check sharpness with Live View AF.  Shoot a dark frame and look for hot/stuck pixels.  Bring a small flashlight to look inside the battery and CF compartments for any evidence of moisture/corrosion.

EOS Bodies - For Stills / Re: Canon GPS Options
« on: August 17, 2012, 03:30:45 PM »
Agreed, it would be better mounted on the front. I guess the alternative to the RRS L plate would be an universal [adjustable] one like by acratech.

It's not as bad as it sounds - I really like the RRS design.  It's their first one (for a Canon dSLR) that's modular - the L part and the base plate can be separated, meaning if the side L isn't needed, it cam be removed, and it's also possible to configure the L further from the side of the camera (allowing room for the GP-E1).  But the big gap with the GP-E1 at the top is not really an elegant solution.

One other really nice thing about the RRS plate - the hex wrench needed to make the adjustments actually stores inside the place, held in place magnetically. 

EOS Bodies - For Stills / Re: Canon GPS Options
« on: August 17, 2012, 03:09:20 PM »
I'm not thrilled with the shoe mount.  They really need to come up an alternative mounting method, especially one that doesn't require the inelegant cable connection. It's a start though - I'm just glad Canon has finally seen the light.  I know alot of folks have no value in this, but I for one am thrilled [maybe overstated].

I may pick one up at some point...I agree that the hotshoe mount is not optimal, and also that an internal battery is a plus.  The GP-E1 does use an alternative mounting method:

...but the downside is that it conflicts with the RRS L-bracket.  So, I'm still undecided which one I'll get.  Either way, it's not high on my list of priorities.

EOS Bodies / Re: Your Canon EOS-1D X user tips
« on: August 17, 2012, 02:52:18 PM »
...the 1d X is like the first time I watched "Time Warp" , I catch moments I haven't seen in my pictures before...

+1 - I really love those key moments captured at 12 fps that would have been between frames with most other cameras.

EOS 1D X, EF 70-200mm f/2.8L IS II USM @ 70mm, 1/200 s, f/2.8, ISO 100

EOS Bodies / Re: Your Canon EOS-1D X user tips
« on: August 17, 2012, 02:09:47 PM »
Reikan Focal with 1d X support released (version 1.6)

Excellent, thanks for the update!! 

FWIW, just like the 5DIII you need to use the MSC mode, fully automatic calibration isn't available.

Which would people choose - larger aperture or image stabilization?

Depends on what you're shooting.  The benefit of IS is that it allows handholding with less light, and it does so by allowing a longer shutter speed.  That's great if your subject(s) are still, but not as useful if your subjects are moving where you need the higher shutter speed to stop action.  For general use, the f/4 IS is probably a better lens - sharper, smaller, lighter, weather sealed, etc.  For fast-moving sports, especially indoors, f/2.8 would be better than f/4.  Obviously, the f/2.8 IS II gives you the best of both worlds - IS and the extra stop to freeze action...but there's a penalty in terms of weight and cost.

EOS Bodies - For Stills / Re: Canon GPS Options
« on: August 17, 2012, 01:59:48 PM »
Well ... The 1DX uses the GP-E1.

Well...the 1D X can use either the GP-E1 or the GP-E2.  But GP-E1 can only be used with the 1D X.  The GP-E1 does not offer the logging function that the GP-E2 does, but it's smaller and more robustly constructed (better sealing), allows simultaneous use of a hotshoe-mounted flash (without needing to resort to the USB connection), and it's powered by the camera battery rather than an internal AA battery. 

EOS Bodies / Re: 7d - max ISO issues
« on: August 17, 2012, 01:50:44 PM »
Can anyone provide the link to this new firmware manual? I may have missed it along the way. Thank you everyone. Looking on Canon's website, the latest 7D manual is dated June and I don't see a updated version.

You didn't miss anything, except perhaps clicking the download link and opening the file.  The manual dated June, 2012, has a notation on the front that the manual is for a 7D with firmware version 2.0.0 or later.

Lenses / Re: 5D Mark III / EF 85 1.8 - General Portraiture AFMA
« on: August 17, 2012, 10:56:27 AM »
Of the dozens of Canon EF lenses I've owned and tested since Canon introduced the MA feature, I have yet to find a single lens that has needed *any* MA adjustment.

Lucky you!  May I have you confirmed that no adjustment was needed?

EOS Bodies - For Stills / Re: 5D3 - AFMA similar to 5D2 or 1DX?
« on: August 17, 2012, 10:24:01 AM »
Is this a graph out of FoCal?

No, I just plotted the data in Excel.

Lenses / Re: best filter for shooting portraits (babies)
« on: August 17, 2012, 10:23:33 AM »
Does the shorty-forty not take filters?

It does - has a 52mm thread (that also serves as a mount for the dedicated - and basically useless - lens hood).  But I don't use a filter on it for two reasons.  First, the front element is tiny, and the cost of the lens is low.  Second, amd most importantly, the reason I use the 40/2.8 is for portability - it's a thin enough lens that when mounted on the camera, I can slip the setup into a Lowepro Utility Bag 100 AW, and that can go inside my laptop satchel, etc.  Likewise, when shooting with another lens, the 40/2.8 easily fits in a pocket.  Adding a filter would make it slightly thicker, enough to limit the utility, IMO (the lens protrudes such a short distance from the body than even a 3.4mm XS-Pro filter is a significant proportion of that thickness!).

EOS Bodies - For Stills / Re: 5D3 - AFMA similar to 5D2 or 1DX?
« on: August 17, 2012, 10:09:54 AM »
And I might add, the 5D3 (and I suspect the 1DX) will interpolate between wide and tele meaning if your wide is +2 and your tele is +4, midway through the focal range it will do +3.

Correct - a simple integer linear regression between the two values across the focal range of the lens.  For the plot below, each lens was set to W = -10 and T = +10.

I know Wombat goes on about the Kenko TCs but will a Canon 1.4X III taped work for a 100-400L? Do you know?

Define 'work'.   :o   With the TC pins taped and a 100-400 mounted, the camera will try to AF.  Whether or not it actually succeeds in locking focus depends on the subject (lots of light and a high-contrast subject works ok, although noticeably slower than native), low light/low contrast and AF will fail.

It's worth noting that the f/5.6 limitation applies only to phase detect AF - if you use Live View with contrast detect AF, you can AF without taping pins, even with the 2x TC (but very sllllllloooooooowwwwwwwly).

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