March 04, 2015, 03:26:24 PM

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Messages - neuroanatomist

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1
Lighting / Re: Color temperature and light source
« on: March 03, 2015, 07:34:33 AM »
How do I make a colorchecker passport photo if my Field Of View equals 1.20 mm x 0.90 mm?  :P

Datacolor ChromaCal.

http://www.emsdiasum.com/microscopy/products/calibration/systems.aspx

 :D

2
DPreview: "The real kicker with the D7200 is that all 51 points can focus down to -3EV just like the D750, which is the best of any DSLR in this class. By comparison, the D7100's points focused down to -2EV. While the Canon EOS 7D II has more focus points (65, and all cross-type), only the center point can 'see' at -3EV."

An example of -2 EV vs. -3 EV: f/2.8, 1/15 s, ISO 51200 vs. 102400.  For the vast majority of applications, 50 more cross-type points with a much wider spread across the frame soundly trumps AF at -3 EV.

3
EOS Bodies / Re: The State of the Camera Industry in 2014
« on: March 01, 2015, 05:44:12 PM »
The prediction from 2009: the rise of mirrorless means the end of the dSLR in five six seven years someday.

4
EOS Bodies / Re: The State of the Camera Industry in 2014
« on: March 01, 2015, 07:32:39 AM »
Canon Rumors is a US blog site...

CSCs lack nothing in features over DSLRs...

Two independent statements that have one thing in common.

5
EOS Bodies / Re: Big Price Drops and Rebates Coming..?
« on: March 01, 2015, 07:20:37 AM »
Check your email for the B&H notice about the price drops and rebates.  Adorama to follow...

6
Lenses / Re: EF-S 17-55mm f/2.8 Going Away?
« on: February 27, 2015, 10:26:09 AM »
Could be.  The support page for the lens is still there, but there's no Buy Now link as there is for other current lenses.

7
I think Neuro mentioned hanging his 600/4 on a BR strap.

Here's what I've thought about getting for this type of situation (but haven't bought, yet):
http://www.kirkphoto.com/Kirk_Security_Strap.html

I have Blackrapid straps as well as the Kirk security strap.  The Kirk strap works well if the lens is the only thing you're carrying.  Frequently, I am carrying the lens and wearing a backpack, and that does not allow the Kirk strap freedom to slide, meaning you cannot just raise the camera to your eye.  I think the design intent of the Kirk strap was to carry a second large lens for swapping. 

I usually use a Blackrapid Sport-L with the 600 II.  When they came out with a left-handed strap, I didn't really get the point (except to make Ned Flanders happy), since you need your right hand on the camera to press the shutter button.  However, a left-handed strap is perfect for use with a supertele, since I lift it and continue supporting it with my left hand while using my right hand to control the camera.


i wouldn't trust an arca swiss clamp in that application.

What are you going to do, get some boat anchor chain and weld it directly to the lens?   ;)  The standard Arca-Swiss clamps (RRS, Kirk, etc.) can hold far more weight than a supertele lens.

8
EOS Bodies - For Stills / Re: 1Dx replacement speculations.
« on: February 26, 2015, 07:56:10 AM »
Electronic shutter so no mirror.

So you are suggesting that the new model will have no dedicated phase detect AF system, but will have only DPAF?  That's about as likely as Canon setting the MSRP at $50.

9
EOS Bodies / Re: Patent: Improved EF to EF-M Adaptor
« on: February 26, 2015, 07:51:35 AM »
Fun fact: If you put Speedbooster optics (focal reducing) in the eos-m adapter, it would turn the EOS-M cameras into a Fullframe mirrorless for 200$ new body.

No it wouldn't, it would give you lens equivalence but it would do nothing for COC and noise, characteristics inherent in a sensors size.

Yes it would. Effectively.

the Sb elements do not increase the physical sensor size, obviously.

Sorry, but you are incorrect...for the exact reason you provide: the SB elements do not increase physical sensor size.  Therefore, as PBD states, CoC is not affected; also, optical resolution still suffers from the need for relatively greater enlargement compared to full frame.

10

Anyone want a $7k door-stop?

I'll buy it, but they are $4,199 new and yours needs work, I'd give you $3,200.

$7,000 new in Australia.

$6,000 in the US...but $4200 gray market on eBay and those sellers ship worldwide (Oz was still on the planet, last I checked ;) ).

11
On the side of the RJ aisle with two seats, the underseat area holds a much larger carryon.

Sure but

a) You can't be sure you'll be on that side
b) Even still you won't be fitting a "maximum size" roller bag under the seat in front of you

Board early and sit there, even if it's across the aisle from your assigned seat.  Generally, most people prefer the single seat, and are happy to trade.  You're right, it's still not full size.  That's why I pack gear in a hard case, sometimes it must be checked.

12
...if you find yourself of a United Express Canadair then you'll be SOL. I doubt you could even fit a bare 600mm in the overhead bin.

On the side of the RJ aisle with two seats, the underseat area holds a much larger carryon.

13
I have the 600 II and a 1D X.  I've never had to 'help' the AF by prefocusing manually, and I haven't experienced hunting with the bare lens (although with complex subjects like a small bird in a thicket, it does hunt with the 2xIII attached – it behaves a lot like the 100-400 MkI in that way).

14
Photography Technique / Re: POLL: Do you wide-screen frame/crop?
« on: February 23, 2015, 10:05:35 AM »
I generally shoot for 3:2, but I crop to 16:9 for my 14" widescreen digital frame.  If that doesn't work for an image, it doesn't go on the frame.  For portrait orientation shots I combine two into a single 16:9 image.

15
Speedlites, Printers, Accessories / Re: Canon st-e3-rt problem
« on: February 18, 2015, 05:33:51 PM »
Tried new batteries?

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