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Messages - neuroanatomist

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6301
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 09, 2013, 04:27:14 PM »
Can't we all just agree to agree?  ;)

6302
Lenses / Re: Which Gitzo: GT3532LS or GT3542LS?
« on: February 09, 2013, 02:43:45 PM »
Well, received my new tripod a short while ago. It is a thing of beauty, I'll definitely offer that. I think I may have...miscalculated...the height though.  This thing is WAAAY TALL.

Don't say you weren't warned...   :P

For that reason, I'd consider the 3542XLS instead of the 3452LS (although that's really a tall set of legs!).  XLS too tall, LS too short, TVC-34L would be just right.    ;)

6303
Third Party Manufacturers / Re: Best Cap for 82mm Slim Filter
« on: February 09, 2013, 02:27:52 PM »
http://www.schneideroptics.com/info/faq/bw.htm#qu26

The XS-Pro mount is 3.4mm thick, whichever glass is in it.

I have UV filters because those were cheaper when I bought them.  If I was buying an 82mm filter from B&H today, I'd get Clear because it's $12 cheaper, and more importantly, it's in stock.

6304
Third Party Manufacturers / Re: Best Cap for 82mm Slim Filter
« on: February 09, 2013, 02:02:08 PM »
For a dSLR, there's no difference between UV and Clear. I'd get whichever is cheaper.

6305
Third Party Manufacturers / Re: Best Cap for 82mm Slim Filter
« on: February 09, 2013, 11:43:57 AM »
I'd recommend exchanging the slim filters for XS-Pro filters - only slightly thicker (3.4mm vs. 3mm) and has front threads so the Canon caps work.  I use an XS-Pro MRC UV on my 16-35L II, there's no additional vignetting.

6306
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 09, 2013, 10:43:05 AM »
Another??

L versions of the TS-E 45mm and 90mm.

6307
70D /7D mark II wishlist
  • A new sensor
  • 20+ megapixel
  • Reduced read Noise
  • 1-2 stops improvement in ISO noise
  • Better dynamic range.
  • Same great canon ergonomics and sensible button layout (hopefully closer to 60D size than 7D size)

Interestingly, your 'wishlist' is a good description of the 6D, compared to your 60D...

6308
Lenses / Re: I want to replace my 18-135 IS STM
« on: February 09, 2013, 09:45:00 AM »
How about the other end - is 40mm wide enough?  If not, you may need two lenses...  If you want something longer, you might consider the 70-200mm f/4L.  True replacements for the 18-135, meaning general purpose zooms for APS-C, are the 17-55/2.8 IS and the 15-85/3.5-5.6 IS.  Both offer better IQ than the 18-135.

If you're ok buying used, you could likely get the 70-200/4 and the 10-22mm for around $1K.  If you really want to shoot birds, get a 100-400 (I see them for $1K used).

Bottom line - decide first what you most want to shoot, then pick the lens that's best for that.

6309
Lenses / Re: Which Gitzo: GT3532LS or GT3542LS?
« on: February 09, 2013, 07:11:08 AM »
How difficult is it to adjust the partially extended legs to make it level. Is it easy or does it involve a lot of fidling to get all 3 legs evenly extended?

Not too difficult to get close (I usually only partly extend the last leg sections on my TVC-33).  But unless you're shooting on flat ground (and sometimes even then), getting the platform perfectly level does mean fiddling. But with a ballhead, there's no need to level the platform.  With a gimbal head, there is - that's why I recommend the leveling base - you don't need to worry about the legs to get the platform level.

6310
Lenses / Re: AFMA Telephoto/Wide Discrepancy
« on: February 08, 2013, 08:56:53 PM »
That's a wider range than I've seen at 50x focal length distance. At 25x, my 16-35L II was -4 and +7 on my 7D, but W and T were closer at 50x (3 units apart) and 3-4 units apart at both 25x and 50x distance on my 5DII and 1D X.

6311
Lenses / Re: Exposure and focusing help with tilt/shift lenses
« on: February 08, 2013, 08:33:13 PM »
So my question:  Am I correct in assuming that if I were to rent a TS-E lens to shoot a basic building type shot, is the popular Canon 24 TS lens the one to go for?

Depends on if 24mm is wide enough. In urban settings, sometimes you cannot back up far enough...

6312
EOS Bodies / Re: Canon 1DX ITR AF Feature
« on: February 08, 2013, 07:59:35 PM »
Really? I thought iTR also worked with 4 and 8 expanded, at least the color tracking?

Nope - 61-pt auto and Zone AF only.  See p.95 of the manual.

6313
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.

6314
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.

6315
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.

+1

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). 

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