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Messages - neuroanatomist

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And Neuro, please don't call me a liar.  Thankssomuch

Fair enough. But then please don't make false statements (e.g., my "being ignorant of the 6D, having not tried or compared one for yourself."). Thankssomuch back at ya.

Edit: looks like I'm not the only one you've made that false statement about.  It seems x-vision may be hitting the mark more accurately than an outer AF point on the 6D...   ;)

I've never gotten a child out of focus with the 6D.

Never?   I can only conclude that 1) you don't shoot many kids, or 2) you are hyperbolizing to the point where it becomes a lie. No AF system is perfect, they all miss, it's just a question of frequency.  Sorry, I don't buy 'never', except in that way that I can honestly say I've never gotten a Sasquatch or a Yeti out of focus.   

Yes, I own the 6D.  You do not.  Apparently you have not even tried one.  The difference between you and me is, I have tried (besides the previous cameras I've owned) a 7D, a 5D3, a 5D2, a 1DX, a 1D4, and a 1Ds3...besides some Nikons.  My judgment is not clouded.  Yours is, besides being ignorant of the 6D, having not tried or compared one for yourself.

If it helps you to believe that, that's fine by me.  However, it's not true.  In fact, a few weeks ago I was at a kids' birthday party, at which several of the parents had dSLRs and we had a nice round robin with a 1D X, 5DIII, 6D, and 7D (I opted out of trying the 7D, since I own one).  In my case, I tried them with the 70-200 II and 85L II.  There were static (briefly) kids, running kids, jumping and sliding kids (it was a 'bouncy house' thing), all in pretty crappy lighting (>ISO 3200 to have a hope of an action-stopping shutter speed). 

All three bodies did great with static kids and one shot center point AF.  With the peripheral points and the 85L, the 6D often (>20%) failed to lock or locked after excessive hunting, whereas the 5DIII and 1D X had no problems (thus, I can see what the poster who called it a '1-point system' means).  With the peripheral points and the 70-200 II, the 6D did as well as the others on static subjects.

With servo and moving kids, the 6D did ok, but just ok, with the 70-200 II, and not well at all with the 85L.  The 5DIII and 1D X were hard to distinguish (I could see the active points stick on the faces with the 1D X, whereas the 5DIII often went to shirts, etc., but at f/2.8 and the distances involved, the DoF was sufficient).  Kids running diagonally toward me gave the 6D the most trouble - a higher miss rate for that than I found acceptable.  When I tried servo tracking with an outer point on the 6D, it would frequently start out in focus then drift successively to backfocusing as the kid ran closer.  The 1D X and 5DIII had no problem in that scenario.  That may be technique, though - I suspect if I'd used just the center point, the 6D would have fared better.  But that would mean cropping away a lot of the final images, since for composition purposes I prefer to leave the subject 'room to run' within the frame.  With the center point on the 6D, the handoff to the outer points sometimes 'missed' and the outer point would lock onto a pipe on the wall or something - the high density of the 5DIII/1D X AF sensor makes those handoffs seamless.

But it really doesn't matter.  What matters is that you're happy with your 6D and it gets you the shots you need.  While my experience with the 6D was limited, I owned a 5DII for years.  While I really liked the IQ, I was frequently frustrated by the limitations of the AF system with moving subjects.  My brief experience with the 6D left me with the conclusion that while it was definitely improved compared to the 5DII, I would still be frustrated with it. 

I think we're seeing the natural tendency of people who own a particular product to defend it's attributes, and minimize the importance of those features for which better models offer improvements.

You really need a supertelephoto lens in a fast professional sports situation, to realize the extra speed and focus ability of the 5D3.
This is really false. The AF is very important in just about anything that moves moderately quickly, using almost any focal length. Animals, boats, cars, runners, any sports, casual and pro birding, ... Kids ... ever try to capture kids at a birthday party? It's no easier than pro sports, maybe even harder.

+1  My 5DII could not keep up with my 3 year old running toward the camera, even with the DoF of an f/4 lens.  I don't think the 6D would do a whole lot better. 

In practical terms though, 6 fps is not that much faster than 4.5.

In mathematical terms, it's 33% faster.  That's going to make a difference with many subjects. 

EOS Bodies / Re: Canon EOS 70D Spec List
« on: June 27, 2013, 03:22:10 PM »
Is it just me or does that look like 7D to me?

It's just you.  There's clearly a zero in the name.   :P

EOS Bodies / Re: Canon EOS 70D Spec List
« on: June 27, 2013, 03:09:28 PM »
If only Canon would give you AFMA on the 70D  :'(

Canon wouldn't needlessly take away a feature like that, would they?  No, they won't.  They already did that to the 60D.  This time, they'll do nothing of the sort.

By which I mean, do nothing.  As in, not add it back in.   ::)  But maybe they'll surprise us - the did give the 5DIII the AF from the 1-series, after all.  So there's hope.  Faint hope, but hope nonetheless.

EOS Bodies / Re: Canon EOS 70D Spec List
« on: June 27, 2013, 02:59:54 PM »
does this mean it uses the same AF technology of 7d ?

Almost certainly.  Not too cost effective to design an entirely new AF system when the 7D's can be reused.  That's for the standard phase detect AF, of course.

It reads like the new AF system is only good for Live View and movie mode.

That's referring to the hybrid AF - pixels on the CMOS image sensor dedicated to phase detect AF.  That system is separate from the 19-pt phase AF sensor.  The former is with the mirror up, the latter with the mirror down.

EOS Bodies / Re: Canon EOS 70D Spec List
« on: June 27, 2013, 02:43:40 PM »
So...20 MP, one more stop of native ISO vs. the 60D/7D, the 7D's phase detect AF system, hybrid AF on the image sensor, 7 fps, WiFi, and still uses the LP-E6.

Lenses / Re: 24-70mm f4 vs 24-105mm f4 (video + still)
« on: June 27, 2013, 02:41:27 PM »
If 24-70mm f4 IS is parfocal - I would consider that. If it's not - you can not zoom on target and maintain focus.
The 24-105L is parfocal, the 24-70/4L IS is not.
Are you sure about this ? I always thought the 24-105 wasn't parfocal. After reading your post I tried it specifically to test this.

When focusing at 105mm and then zooming out it does seem to hold focus, but this may be the result of DoF on a f4 lens. However when focusing at 24, then zooming in it seems to loose focus.

I was basing that statement on a quote from Chuck Westfall (technical mouthpiece for Canon USA): "There's a cam inside the 24-105mm lens that is designed to maintain an accurate focus when the lens is zoomed from tele towards wide."

Reading that statement literally, it doesn't say that it maintains focus when zoomed from wide to tele...   :-\

Many people are happy with 3rd party batteries.  Some 3rd party batteries are no different from OEM, some are produced with poor QC or without protective circuitry. The manufacturers don't say which are which.   Your call.

Third Party Manufacturers / Re: Canon 300 2.8 IS II with Gimbal Head
« on: June 27, 2013, 01:22:02 PM »
...and you just let her stand there, in the meadow?!?!?   

I'm lost on this one?? 

The year was 1942.  Canon was selling the the Canon S and the Canon J rangefinder cameras, and both of them came with Nikkor lenses.   :o

In a totally unrelated matter, an animation studio run by a man named Walt produced a movie about a young fawn.  Maybe you've heard of it?   ;)

You named the shot "Bambi'sMama."  Bambi's Mama told him, "You must never rush out on the meadow, there might be danger! Out there, we are unprotected. The meadow is wide and open, and there are no trees or bushes to hide us. So we have to be very careful."  Later in the movie, the Meadow is where she was shot by a hunter.  Thus, my comment...

After the last mails from Canon I can say, that there will be no version II of the EF 16-35 2.8 L.

Really?  Then why was the EF 16-35mm f/2.8L II released back in 2007?   ::)

EOS-M / Re: EOS-M firmware update 2.0.2 available
« on: June 27, 2013, 11:20:13 AM »
Can someone tell me if there is improvement with the adapter and the use of EFS lenses after the firmware update?

Someone just did.   ;)

  • 17-55/2.8 IS: good improvement - faster than the 24-105. If I refocus on the same spot, it confirms in like 0.2sec.

The 17-55/2.8 is the fastest in the list above so far.

So is your T2i broken? 

You're clamoring for a new body, but complaining the price of the T4i is too high...yet both the T5i and SL1 were announced earlier this year and are both newer than the T4i.  If something newer is announced tomorrow, I hope you realize it's going to be more expensive than the T4i which is last year's model after all.

A portrait shooter should be strongly considering the 6D, but you state it's not for you.  Why not?  It's exactly what 'a portrait shooter that cant afford a 5d3' should be considering...

So I say, not wtf Canon, but wtf ashmadux!   ::)

if you read more carefully you will notice i know that.

i said i FIRST noticed that the viewfinder does not show the correct DOF when i shoot wide open. 

Yes, I read carefully.  You stated, "the viewfinder does not show a real impression of the DOF anyway.. yes even with the DOF button pressed....i first noticed this with a 50mm f1.8...wide open at f1.8." That statement suggests you think the DOF Preview button should do something with the aperture set to wide open, and I pointed out that the DoF Preview button has no effect with the aperture set wide open.

Apologies for explaining the reason behind something which you apparently know (even if that understanding is somewhat incomplete)...but I suspect that not everyone knows that the stock focus screen shows the DoF of ~f/2.8 even with a faster lens.  Even though you don't care why, someone else reading this might, especially since there is a simple and cheap solution to the problem you describe, even if you don't care to implement it - the 6D is one of those cameras where the stock focus screen can be user-swapped for the Eg-S screen that does show the true DoF of a fast prime like your 50/1.8.

Lenses / Re: 24-70mm f4 vs 24-105mm f4 (video + still)
« on: June 27, 2013, 10:53:40 AM »
If 24-70mm f4 IS is parfocal - I would consider that. If it's not - you can not zoom on target and maintain focus.

The 24-105L is parfocal, the 24-70/4L IS is not. 

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