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Messages - neuroanatomist

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6151
Only at 15 mm

Incorrect.

The 8-15mm is a fisheye lens at all focal lengths.  At 14-15mm on FF, it's a 'full frame fisheye' meaning the FoV fills the frame (you're getting an AoV of ~175°).  At 8mm on FF, it's a 'circular fisheye' meaning a circular 180° AoV inset in the rectangle (black borders).



If you want rectilinear from the 8-15mm fisheye, you must de-fish in post (at the cost of corner sharpness). 

The widest rectilinear Canon lens is the 14mm prime, Sigma has a rectilinear zoom that goes to 12mm.

6152
Macro / Re: Reverse a lens for macro.
« on: April 08, 2013, 11:34:17 AM »
Not that the MP-E 65 is especially easy to use...but a reversed lens (mounted direct or to another lens) is even more challenging.  IQ is not going to be stellar usually - it depends on the lens(es) used.

6153
EOS Bodies / Re: Canon Announcements on April 23, 2013? [CR2]
« on: April 08, 2013, 09:19:30 AM »
Dilbert, I'm genuinely interested. For somebody who obviously dislikes Canon and all it stands for, why are you still posting here? So you can educate newcomers to come towards the light (eg, Nikon) before they settle for any of Canon's rubbish?

It's been a little sad to watch the evolutionary descent from human to troll. 

6154
Software & Accessories / Re: Ballhead for a RRS TVC33
« on: April 08, 2013, 09:04:15 AM »
The main reason I chose the -33 over the -34L is that I don't need the height. I'm 5'7" (on a good day), so for normal use, I've got 8-10" to spare (I gain ~1" with the clamping leveling base).  The other day, I had fully extended the legs and put the 600 II on the gimbal, pointed up about 30-degrees, so the VF was well below horizontal...standing on tip-toes I could barely look through it.

Secondarily, a 3-section tripod is faster to set up and collapse than a 4-section one - 1/3 fewer leg locks.

6155
EOS Bodies / Re: Canon Announcements on April 23, 2013? [CR2]
« on: April 07, 2013, 10:13:39 PM »
But that is exactly the reason that has most people on this forum up in arms, they AREN'T keeping up with advancements in new technology, they are simply rereleasing the same camera over and over again in different configurations. The average consumer may not notice or even care, but we dedicated shooters and die hard Canon fans do!

Fine. But, 'we dedicated shooters and die hard Canon fans' make up an infinitesimal fraction of their market. The vast majority of dSLR buyers are 'average consumers'.

And last week one of them came to me for advice on which camera to buy, saying all their friends had Canon. My recommendation? Nikon, followed by showing him DxO's evaluation of the Canon vs Nikon cameras and telling him to visit some stores and try them both. He bought Nikon. I just can't in all honesty recommend Canon DSLRs to anyone.

Did you call Canon and tell them your story?   I'm sure it would have a profound impact on their corporate strategy.   ::)

FWIW (which, frankly, is just about the same as your story is worth), I can in all honesty recommend Canon dSLRs to people, because 1) there's much more to camera performance than DxO measures, 2) lenses are far more important than bodies and Canon has the upper hand there.

6156
EOS Bodies / Re: Canon Announcements on April 23, 2013? [CR2]
« on: April 07, 2013, 09:46:33 PM »
But that is exactly the reason that has most people on this forum up in arms, they AREN'T keeping up with advancements in new technology, they are simply rereleasing the same camera over and over again in different configurations. The average consumer may not notice or even care, but we dedicated shooters and die hard Canon fans do!

Fine. But, 'we dedicated shooters and die hard Canon fans' make up an infinitesimal fraction of their market. The vast majority of dSLR buyers are 'average consumers'.

6157
EOS Bodies / Re: Canon 5d Mark III Shadow recovery
« on: April 07, 2013, 08:14:29 PM »
long story short
nice that you have seen what I have tried to explain about read noise and banding  since I started as a member here

Not really.......................................................

No one (at least, no one with a shred of objectivity) has denied that Sony/Nikon sensors have more DR than Canon sensors. But jrista is correct - the suggestion that DR at low ISO is the be-all-end-all of what matters for camera performance - for every photographer - is ludicrous and absurd.  Yet...that is exactly how the repeated Mikael/ankorwatt/etc. posts came off. That was the problem with the former persona, and I sincerely hope we don't go down that road again.

your opinion, not mine.

The suggestion that DR at low ISO is the be-all-end-all of what matters for camera performance - for every photographer - IS ludicrous and absurd.  Granted, it's my opinion that that's how your posts sounded - and clearly I'm not alone in that opinion.  But maybe that's not what you meant...

6158
EOS Bodies / Re: Canon 5d Mark III Shadow recovery
« on: April 07, 2013, 07:22:08 PM »
long story short
nice that you have seen what I have tried to explain about read noise and banding  since I started as a member here

Not really.......................................................

No one (at least, no one with a shred of objectivity) has denied that Sony/Nikon sensors have more DR than Canon sensors. But jrista is correct - the suggestion that DR at low ISO is the be-all-end-all of what matters for camera performance - for every photographer - is ludicrous and absurd.  Yet...that is exactly how the repeated Mikael/ankorwatt/etc. posts came off. That was the problem with the former persona, and I sincerely hope we don't go down that road again.

6159
Software & Accessories / Re: Ballhead for a RRS TVC33
« on: April 07, 2013, 07:03:01 PM »
I have the BH-55 on my TVC-33, it's a great head.  Easily holds my 1D X and any lens (including my 600/4 II, although I use a PG-02 LLR gimbal for that). 

FWIW, it wasn't the last tripod I'll ever buy.  ;)  After getting that, I later got a RRS TQC-14 and BH-30 for travel.  But now I'm set.

6160
Lenses / Re: Prime vs zoom
« on: April 07, 2013, 06:15:47 PM »
Since getting the 24-70 II, I haven't used the 35L... 

6161
EOS Bodies / Re: Canon Announcements on April 23, 2013? [CR2]
« on: April 07, 2013, 04:04:37 PM »
What is Canon doing?

Nothing. What a joke of a company.

What is Canon doing?  Delivering value to their shareholders by consistently selling more cameras than their competitors.  If that trend continues, the innovations of other manufacturers may become irrelevant.

6162
Lenses / Re: Prime vs zoom
« on: April 07, 2013, 02:45:24 PM »
The classical trinity is 35 / 50 / 85.

First time I've heard that. The 50/1.2L isn't old enough to be part of something called 'classic' and I hope you aren't suggesting the 50/1.0L was ever part of such a trilogy. No...the 'classic' trinity of primes is as stated above: 35L, 85L, and 135L.

6164
Speedlites, Printers, Accessories / Re: straps
« on: April 06, 2013, 05:07:51 PM »
So if you have the black rapid attached to the 70-200 lens mount and then you want to use a monopod attached to the same lens mount do you just not use a strap when mounted on a monopod or would you use the camera mount in that circumstance?  Thanks

That's why I have the Kirk 1" clamp on the end of the BR strap - detach strap, attach monopod.

6165
EOS Bodies / Re: Canon 5d Mark III Shadow recovery
« on: April 06, 2013, 04:50:10 PM »
Yourself and jrista are behaving like Nikon missionaries trying to spread your good word to the great unbelievers.

 ;)

I should point out that some of us believe in DR (should I call it 'salvation' in this context?), but don't find the tradeoffs worthwhile.

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