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Messages - neuroanatomist

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6196
EOS-M / Re: EOS M and Flash X-Sync Question
« on: July 06, 2013, 12:03:55 PM »
Here on this video, eos-m can sync up to 1/4000s. Is is possible to do with cheap triggers or it needs to have some of this expencive triggers ?

That's high speed sync (HSS) in action.  The ST-E3 and 600EX-RT support that (with recent bodies), not sure if cheaper triggers support HSS (although expensive ones like PocketWizard TTL triggers have something similar).

6197
EOS Bodies / Re: Why a high MP camera?
« on: July 06, 2013, 12:00:47 PM »
Because sometimes even 1200mm (600 II + 2xIII) isn't long enough, and I have to crop.  For many output types, that's ok, but if I need a heavy crop and still want a 24x36" print, more MP would help...

6198
Maybe something wrong with your 70-200.

...or maybe with your 100-400.  ;)

The 70-200 II + 2xIII is sharp, it's that the 100-400 is a little sharper @ 400mm, and the 400/5.6 is a little sharper still.  As for a 'bad copy', TDP tested three copies of the 70-200 II, and none of them with the 2xIII beat the 100-400 @ 400mm.

Copy 1

Copy 2

Copy 3

I like Artie, but the thing to keep in mind is that his blog is there to earn money for him ("Please remember to use our links") and the ~$2500 70-200 II + TC combo will earn him more than the other options. 

It seems like several of his posts are actually comparing the 70-200 II + 2xIII to the 400/5.6 prime, and favoring the former for IQ. I'd have to declare shenanigans on that...

6199
EOS Bodies / Re: Why can't the 70D be 40MP in regular mode?
« on: July 06, 2013, 10:40:23 AM »
When you're not using live view, will it be possible to take 40MP pics?

No.

Even if you could, you'd have a 3:1 aspect ratio, not the normal 3:2...

From my other post
"Though if it's just one pixel that just collects an abstract single piece of color information I suppose the shape wouldn't matter... if it were a triangle and it read the color as R23G33B92 it could just assign that to a square shaped pixel in the picture file right?"

It's not about shape. The half-pixels all have the same orientation, so your hypothetical 40 MP image would be 10944 x 3648 pixels.

As also stated, there's one microlenses over those two sub pixels, so you'd be mucking up the aspect ratio and bloating the file size without adding real information content.

And those additional autofocus pixels likely does not have colour filters. They should not for sake of AF performance

They do.  They're not separate pixels, but two sub pixels under each microlens/color filter.

6200
EOS-M / Re: How do you carry your EOS-M?
« on: July 06, 2013, 10:31:10 AM »
I tried the Dashpoint 20 too. Works great if you're only carrying the M + 22mm.

Thanks for the confirmation.  I plan to use only a wrist strap, at least for now.  Would prefer something to attach to the strap lug rather than the tripod socket (like the camdapter).  Canon makes one, but it's not available in the US....

6201
EOS-M / Re: Will version 2 use the new 70D sensor?
« on: July 06, 2013, 09:32:19 AM »
...somebody is trying awfully hard to get rid of current M bodies.

Not sure it's that, so much as trying to push broader adoption of the system.  It could still be a while (a few months) before we see an M II.

I suspect we'll see an update with the current form factor, and also at some point a higher-end version with an EVF.

6202
EOS Bodies / Re: Why can't the 70D be 40MP in regular mode?
« on: July 06, 2013, 09:17:08 AM »
When you're not using live view, will it be possible to take 40MP pics?

No.

Even if you could, you'd have a 3:1 aspect ratio, not the normal 3:2...

6203
EOS-M / Re: Will version 2 use the new 70D sensor?
« on: July 06, 2013, 08:23:35 AM »
I think the 70D's sensor will be used in the M II.

6204
EOS-M / Re: How do you carry your EOS-M?
« on: July 06, 2013, 08:05:23 AM »
I ordered a Lowepro Dashpoint 20 for my EOS M + 22mm pancake.  I'm a big believer in a camera bag with no excess space (which explains why I have so many camera bags!).

6205
The SL1 has an optical viewfinder but you will be limited going forward to EF-S lenses.  With a lens mount, the M can use EF and EF-S lenses in addition to the M lenses.

 ???  ???  :o

The SL1 can use EF lenses...   (In fact, the 40/2.8 you mention is EF, not EF-S.)

6206
I'd probably get rid of your 100-400 though, as the 70-200mm f/2.8L IS II with the 2x III is better at 400mm; especially on a 5D III. 

My 100-400 @ 400mm is better than my 70-200 II + 2xIII @ 400mm.  Not massively better, but noticeably better.  That's also consistent with TDP's ISO 12233 crops. 

6207
Lenses / Re: Monopod for 600mm II - advice needed
« on: July 06, 2013, 07:34:35 AM »
I'm in the middle of convincing myself to trade my 300mm for the new 500mm and read that Canon says swapping the tripod foot for the monopod one requires going along to a Canon service centre - what the...?

Just how difficult is it to swap the feet or are they just creating additional revenue for themselves?

It's four hex screws...easy to do yourself.  Personally, I'd recommend just swapping out the Canon foot for an RRS replacement foot, with a little Loctite Blue on the screws when you install it.

6208
The M shares a sensor with the T4i/650D.  The SL1 and T5i/700D have the same sensor.  The IQ is the same, the latter has Hybrid CMOS II, which has a larger phase detect AF area on the image sensor than the original version in the M.

6209
If the only problem with 6d is the AF points position then I dont get it...studio portrait work isn't the most AF intensive field! Focus and recompose is free (I don't like it either but if that's really the only option...)

It may be free, but you get what pay for...  Here's a good description of Why Focus-Recompose Sucks.

6210
Technical Support / Re: Help needes: EOS 7D - noisy pictures
« on: July 05, 2013, 02:41:25 PM »
The 7D's AI-servo tracking is not as dreamy as the promotional literature would lead you to believe.  It's good; it's not great.  Fast moving objects, just as planes, will leave the AF system a little lost in the woods.  As such, your results will be hit or miss.

The 7D's tracking is excellent.

I disagree with you.  I think the 7D's tracking is adequate at best, and sub-par from an objective standpoint.

But we'll just have to agree to disagree.

I thought the 7D's tracking capability was excellent....then I got a 1D X.  :P

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