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Messages - neuroanatomist

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Lenses / Re: Canon 70-200 f/2.8L IS II "Fix"
« on: February 08, 2013, 07:12:54 PM »
If the 100 L and the 135 and all the nikons survive the heat, then this will too. "Shameless marketing" is much easier to believe.

Yup, the "big whites" are supposedly painted that way so that excess heat does not cause the fluorite elements to expand, but on a lens like this it's purely marketing.

The 100/2.8L Macro IS and 135/2L do not have any fluorite elements, but the 70-200/2.8L IS II does have a fluorite element.

BTW, it's not about 'survival' - no one (at least, not me) is suggesting a little sunshine will cause a fluorite element to crack. It's about functionality - if the increased heat causes an element to expand beyond design tolerances, IQ will likely suffer.

EOS Bodies - For Stills / Re: 5D III Dynamic Range
« on: February 08, 2013, 06:46:26 PM »
As we all know the dynamic range of 5D MK III is not better than its counterpart Nikon D800.

Now, where have I heard that before??   ::)

I was wondering if this deficiency could be addressed by using single shot HDR for batch processing. Has anyone tried HDR batch process to improve dynamic range, what would be good software for this purpose or any other comments. Thanks in advance.

IMO, your question has been accurately and helpfully answered by David Hull and ishdakuteb.  DR not present in the original shot cannot be added, but post processing techniques as described in the Adorama tutorial can maximize the DR from a single shot, up to the limit of the image capture.

Many scenes have less than 11 stops of actual DR in the scene, in which case there's no 'deficiency'.  Other scenes have more than 14 stops of DR, in which case all current dSLRs are 'deficient' and multiple bracketed exposures and HDR are the only way to capture the full scene DR, assuming you need to do so.

EOS Bodies - For Stills / Re: Advice for Vacation to Belize
« on: February 08, 2013, 06:15:04 PM »
The Mayan ruins are worth the trip.


When we went, from Cayo we traveled a short way into Guatemala to spend a couple of days at Tikal.  For you Star Wars buffs, Tikal is the planet Yavin in the the original (Episode IV). 

EOS Bodies / Re: Canon 1DX ITR AF Feature
« on: February 08, 2013, 03:21:26 PM »
Yes.  Setting 'select cross type points' limits only what you can manually select.  With 4- or 8-pt expansion or 61-pt in Servo, when the camera is picking the AF point(s), it will use both cross- and line-type points.

Lenses / Re: Canon 70-200 f/2.8L IS II "Fix"
« on: February 08, 2013, 02:55:40 PM »
You forgot to stencil "AF-S Nikkor 70-200mm f/2.8G ED VR II" on your black lens.   :-X
I knew I'd get one of these!

Preemptive strike?  The off-white can be conspicuous.  I do wonder, though - Canon paints the lens white for a couple of reasons, one of which is to keep the internal temperature of the lens lower in the sun (the other is shameless marketing, of course!).  Probably not a big deal.

Lenses / Re: Canon 70-200 f/2.8L IS II "Fix"
« on: February 08, 2013, 02:04:11 PM »
You forgot to stencil "AF-S Nikkor 70-200mm f/2.8G ED VR II" on your black lens.   :-X

EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 08, 2013, 08:55:00 AM »
The 1D X definitely has better noise characteristics compared to the others, and it does not seem to exhibit the oscillating +/- 1/3rd stop ISO quirk (which is a big improvement IMO).
What is this quirk? I stopped using 1/3rd stop ISO after I was told that my 7D actually only has 1-stop analog amplification, while intermediate ISO values consists of only applying a digital gain (that only serve to throw away highlight info).

Bill Claff's data show the 'quirk' pretty clearly.  The same oscillating pattern seen below in the 5DIII plot is seen in the 7D plot, etc.  The 1D X has lower read noise overall, and a pretty smooth relationship with ISO.

yeah that rat that jumped off the empire state building just hit the ground  :o
Oooh ... Post some pics ;)
Bright sun on the side of the building, deep black beady little rodent eyes and have to push the exposure 4 stops to see the detail in the matted fur. Gonna need at least 14.4 stops of DR, better not use a Canon.

As the predawn shadows are lifted, I bet the rooster gets really noisy.


Is 'cock-a-doodle-doo--cock-a-doodle-doo' a fixed pattern?

Ba-dum-bum.   :P

EOS Bodies - For Stills / Re: Advice for Vacation to Belize
« on: February 07, 2013, 09:03:06 PM »
Whatever gear you bring, get it insured before you go.

For most of what you'll see in Belize, a good (small but stable) travel tripod and a comfortable backpack will serve you better that a camera upgrade.

For snorkeling/diving, I'd go with a small but relatively big-sensored P&S (e.g. S100) and its dedicated housing.  If you want to shoot at depth, budget permitting you'd need an Ikelite-like housing and strobe.

I highly recommend diving the Blue Hole, and if you go inland as far as Cayo, check out Actun Tunichil Muknal.

As the predawn shadows are lifted, I bet the rooster gets really noisy.

Third Party Manufacturers / Re: D7000 replacement in April...
« on: February 07, 2013, 05:03:17 AM »
Seriously?!?  This is how you think?
Then I think you do not understand the whole concept of artistic intent - which is just fine since you are defending using tools that limit artistic expression.
Some of us prefer to work with hardware with less limitations to provide us with a greater latitude of creativity.
Ultimately, it seems to be this is what it comes down to; some of us want to manipulate our images and some of you are happy with them out of the camera.  Artists vs snapshot documentarians.

DING!, you're saying that if one is an 'artist', one must be using a Nikon camera with a Sony sensor, and if one is using a Canon camera with its unbearably poor DR, one is capable of merely 'taking snapshots'.

Is that ringing in your ears making it hard for you to think, or are you really intending to be that pompous and insulting?

Lenses / Re: Which Gitzo: GT3532LS or GT3542LS?
« on: February 07, 2013, 04:51:29 AM »
I guess the only drawback I see with the XLS vs. the LS is its collapsed height. It is over 28" long collapsed, where as the LS is a little over 22" long. If I wanted to travel with the tripod, a 22" one would fit in a carry-on, where as a 28" one would not. At the moment that is the last thing I guess I need to decide on.

Neither would do well as a carryon, and either would fit in a checked suitcase.  That's actually why I have two tripods - the TQC-14 with BH-30 ballhead in its quiver bag fits inside my Storm im2500 carryon hard case, and is quite suitable for anything up to and including a white zoom (70-200/2.8, 100-400, 28-300).  It would hold the 600 II, but if I were to travel with that, the TVC-33 would go in checked luggage.

Lenses / Re: TS-E lens
« on: February 06, 2013, 08:48:13 PM »
I don't know if you are still interested in the TS-E 17mm hack, but B&H just got a shipment of the Lee 82mm wide angle adapters.  The adapters are hard to come by. 

Thanks for the heads-up. Not sure how many they got in...but they now have one fewer available.  ;D

Lenses / Re: Which Gitzo: GT3532LS or GT3542LS?
« on: February 06, 2013, 04:10:11 PM »
Pretty amazing though, that those tripods can handle that much weight...I mean, we have to be talking greater than 100 pounds there, in both cases for both brands.

Well, yeah - but either the guy hanging from the Gitzo is extremely short, or judging by it's height that Gitzo is at least a 3-series and rated to hold at least double what the RRS travel legs are rated for...   :P

Seriously, you can't go wrong with either brand. 

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