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Messages - neuroanatomist

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6286
Lenses / Re: Question about 200-400
« on: June 09, 2013, 12:00:17 AM »
Without the extender engaged, it's 200-400mm f /4. With the extender engaged, it's 280-560mm f/5.6.

6287
Lenses / Re: What is the next Canon lens you want or covet and why...
« on: June 08, 2013, 06:39:21 PM »
At the moment I'm done buying stuff...

I....

Just......

Don't.......

Understand...........

 ???


6288
To confirm: you see this issue with the WB set to something other than Auto or Flash?

6289
Reviews / Re: Can we have a 16-35 2.8L II review next please?
« on: June 08, 2013, 03:12:37 PM »
Can anyone compare the 16-35 lens on a full-frame camera to the crop-body-angle-equivalent EF-S 10-22 on a crop-body camera?  Similar sharpness?  Better?  Worse?

http://www.the-digital-picture.com/Reviews/ISO-12233-Sample-Crops.aspx?Lens=271&Camera=736&Sample=0&FLI=0&API=0&LensComp=412&CameraComp=453&SampleComp=0&FLIComp=0&APIComp=0

6290
... I rather stick with a preset value

My point is that on a Canon body, by selecting Flash as a WB setting, you're not selecting a fixed preset value, just a modified form of Auto WB. 

I wouldn't call this a 'bug' yet. Granted, it should be a fixed color temp with something other than a Canon flash in the hotshoe - but PWs do strange things sometimes, and I bet if you send it to Canon they'll not find an issue.

BTW, what makes you think the issue is with the body and not one of the monolights? 

6291
Anything in the hotshoe?  On a Canon body, setting Flash WB isn't a constant 6000K no tint like it would be if you set it in a RAW converter (other than DPP).  On-camera setting for Flash WB uses color information passed from a Canon flash, so the WB isn't a constant color temp - the idea is to compensate for color temp changes in the flash tube output.  Perhaps with a CyberSync or other 3rd party trigger in the hotshoe, an odd signal comes back occasionally?  You could try setting a Kelvin WB.

6292
My concern would be that 70mm isn't wide enough for 'a family of 4-5' for an indoor shoot.  All three are great lenses (I have them all), but for indoor and outdoor group portraits I reach for the 24-70 II...

6293
EOS Bodies - For Stills / Re: focusing screen dilemma resolved
« on: June 07, 2013, 06:57:48 PM »
The Eg-S is available from Amazon and and other Canon retailers for less than $35. Can be installed on 6D, 5D Mark II and 5D Mark III for sure.

Don't be too sure...  Canon does not consider the focus screen on the 5DIII to be user replaceable.

6294
Lenses / Re: New 200-400 and latest camera firmware?
« on: June 07, 2013, 03:58:37 PM »
Don't have it, but since Canon released body firmware updates to support f/8 AF with a 1.4x TC and this lens, saying nothing about AFMA, and since 3rd party zooms AFMA just fine on those bodies, I would not expect any issues.

A lens correction profile for the new lens will be along eventually.

6295
Reviews / Re: Horrible experience with Adorama camera
« on: June 07, 2013, 02:43:41 PM »
Sorry, haven't had a chance to read everything yet...If it's a debit card, call the bank.  If it's a credit card, then call the credit card company or bank that issued.  Sometimes the holds take a while to expire - this is almost always because of an issue on the bank/card side.
Perhaps you should have taken the time.  The issue under discussion involves a wire transfer...

6296
Quote
A new 50mm will be coming in 2013, as the 35 f/2 gets replaced with a new IS version.
Source: http://www.canonrumors.com/2012/11/two-lenses-to-be-announced-shortly/
Patiently waiting, any hope for a 50mm f/1.2L update? Buying something now dating back to 2006 is making me uneasy.

2006 is comparatively new.  The other 50mm lenses that are 'current' are the 50/1.4 from 1993, the 50/1.8 from 1990, and the 50/2.5 Compact Macro from 1987.  There are many lenses in the current lineup, including many L-series lenses, that were released 15 years ago or more.

6297
Lenses / Re: 200-400 f4 and the "new" 100-400 zoom
« on: June 07, 2013, 01:56:24 PM »
What would be your guess on how much of the lens can be used in a "new" 100-400?


Likely almost none, per se.  The new coatings used on all lenses would be applied to the 100-400, of course.  The designs are very different (extending vs. non-extending zoom, variable vs. constant aperture, built-in TC, etc.).

Also, I am still trying to understand how similarly sized lenses (200-400 vs. 100-400) could be that different in price.  I am guessing the "new" 100-400 would be in the 3k range, so 3x or 4x more for the 200-400.  I would think that the primary driver of cost would be the speed and focal length on the long end, and that a zoom tele of x-400 f4 would be a little closer to a y-400 f4.  Am I wrong to think this?

The new 100-400 and the 200-400 are not 'similarly sized lenses'.  What matters is the aperture at the long end of the zoom.  The 100-400 is 400/5.6, meaning a 71mm diameter front element, whereas the 200-400 is 400/4, meaning a 100mm diameter front element - 41% larger linear measure, meaning double the area (and larger volume, too).  Bigger elements, a lot longer (and more costly) to grow the fluorite crystals, more robust engineering to hold the larger, heavier, glass, etc.

Bottom line, the 100-400mm f/4.x-5.6 and the 200-400mm f/4 are in totally different classes, in size, build cost, and price.

6298
EOS Bodies - For Stills / Re: Flash for 5D2 and 1D3
« on: June 07, 2013, 01:18:50 PM »
430EX II, unless you absolutely need AF assist lamp coverage for the outermost AF points of the 1DIII when using an ultrawide lens.

6299
Canon EF Prime Lenses / Re: Canon EF 600mm f/4L IS II USM
« on: June 07, 2013, 01:16:39 PM »
"Cleared for Landing"


EOS 1D X, EF 600mm f/4L IS II + EF 1.4x III Extender, 1/1600 s, f/6.3, ISO 400

6300
Lenses / Re: 24-70 II slight clicking sound when zooming
« on: June 07, 2013, 11:55:21 AM »
I got an explanation from the rep guy as to what causes the noise (please note I'm simply quoting him as I have no idea about this myself)

He said there's a brass or copper band around the inner barrel that has a brush mounted to it that reports focal length to the camera. And he had taken in 5 (!!) 24-70 2013 editions with the same exact problem. And he said that brush is simply mounted to hard so that it grinds, it's nothing faulty, and it would loosen up and become normal. He understand fully that I didn't want to wait to "break it in" so I simply got my money back.

Interesting.  I wouldn't want to 'break in' a lens, either.  Ordered mine from B&H in mid-March, has the old-style side-pinch cap and was produced in October, 2012 based on TDP's serial number dating table.  No issues with the lens.

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