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Messages - neuroanatomist

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6271
EOS Bodies - For Stills / Re: Battery for 1D X
« on: February 12, 2013, 09:29:03 PM »
1 day shoot maybe 50 - 100 frames goto use it ill get about 40 - 60 more frames boom not working battery flashing, my 7D you had forever even on flashing last bar.

I'd contact Canon Support.  I can shoot a couple of hundred shots, let it sit for a week, shoot another hundred shots, and still have three bars on the battery indicator.

6272
EOS Bodies - For Stills / Re: Battery for 1D X
« on: February 12, 2013, 06:27:17 AM »
Anyone notice the 1DX batteries DIE down just sitting idle in the camera? or am i just unlucky.

I haven't noticed anything more than a small drop due to the normal self-discharge of a Li-ion battery. How long are you letting it sit unused?

6273
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 11, 2013, 02:13:45 PM »
Beside me is another photographer with a 1Dx set to take a burst at 10 frames per second.

Nudge that photographer on the shoulder and suggest that in such a situation, the camera should probably be set for it's maximum frame rate of 12 fps...   ;)

(Or 14 fps if JPGs with MLU and no AF are acceptable, but I'd stick with 12 fps.)

6274
Lenses / Re: Please help me.
« on: February 11, 2013, 02:00:14 PM »
, and the three EF-S lenses maned above hold their value quite well.
Neuro, are you lionising lenses again?
What, you think it doesn't happen?   :P

6275
Lenses / Re: Please help me.
« on: February 11, 2013, 01:42:24 PM »
IMO, the EF-S 17-55mm is the best general purpose zoom lens for APS-C.  The EF-S 15-85mm f/3.5-5.6 IS is a close second.  Both are optically equivalent to L-series lenses (as is the 10-22mm).  In fact, when comparing them on the same APS-C body, the 17-55mm outperforms both the 17-40L and the 24-105L. 

I'm a big proponent of getting the lens(es) you need for the body you have.  If you're getting a FF camera next month, that's one thing.  But if you're getting a FF camera 'someday...maybe..." then in the wide to normal range, an EF-S lens is the best choice, and the three EF-S lenses maned above hold their value quite well.

6276
But I still would like a Canon EF-S 50-150 2.8 IS USM.

Now that's an EF-S lens that would make sense!  :)

6277
Well, I DO understand that 2.8 might be pushing it, but maybe a 4? Tamrons 70-300 is plastic built, for FF, and this would be a prime, needing less moving parts. (I think that kind of build would be at least OK)

Also, are you taking into account the size difference in sensors? 300/2.8 might be 107mm on FF, but it sure is not on the Panasonic FZ200. So, how big would it HAVE to be, if optimized for a 1.6x sensor?

Tamron's 70-300mm is f/5.6 at the long end, not even f/4, much less f/2.8.

Are you saying the Panasonic FZ200 has a 300mm lens (or the 24-600mm lens claimed)?  If so, why is 4.5-108 (mm) printed on the lens? Because 24-600mm would be a lie.  The lens doesn't care about the sensor behind it, focal length is an intrinsic property of the lens. Period. If you want to equate that to the FoV of a FF lens, fine - but putting an iPhone 5 (8x crop factor) behind a 40mm f/2.8 'pancake' lens doesn't mean you magically have a 320mm f/2.8 supertele lens.

Bottom line, a 300mm f/2.8 lens optimized for a 1.6x sensor would be.....the same size as a 300mm f/2.8 lens for FF. 

Now, if by 'optimized' you mean 'would give the same FoV as 300mm on FF' then a 200mm f/2.8 lens would do that (but 200/2.8 on APS-C it would give the DoF of 320mm f/4.5 on FF).  Similarly, the 108mm f/2.8 lens on the Panasonic FZ200 gives you the FoV of 600mm on FF, and the DoF of about f/15. 

6278
Why do we see extreme tele reach in some "superzoom" compact cameras? Do they only accomplish this through compromised IQ, or do they gain something from the small sensors used?

Ok, take the SX50 HS, FF-equivalent of 1200mm at the long end. But, it's not a 1200mm lens - it's a 215mm lens that's f/6.5 at the long end.  The small sensor gives a 215mm lens the FoV of a much longer lens used on a FF camera, but focal length is an intrinsic property of the lens.  The SX50 lens isn't a true telephoto design, but even if it were, that would mean only a 33mm diameter front element.

6279
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 11, 2013, 09:04:04 AM »
Despite the fact it was long, long time ago, I have always remembered something that my Grandfather told me:
 
"You can't argue with an illogical person"  ;)

+1

Like Sam (or Mark, if you prefer) said, "In a battle of wits, it is poor sport to fight an unarmed man."

Either way, it's obviously pointless and I'm done.

6280
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 11, 2013, 09:00:05 AM »
For the 5DC, 7D and rebel-crowd, I'm sure the 5D3 is a great upgrade. :)


...and for the 5DII crowd who shoot things that move.  ;)


You're telling me that using a 5DIII with the same shutter speed and aperture as a 5DII will result in better photos of "action"?? I'd like to know how you work that magic. Do things automatically go slower when they sense a 5DIII is taking a photo of them?


Thanks, now I understand you.  Your dislike of the 5DIII (or maybe Canon, in general) has completely eliminated any objectivity you may have had.  This assertion is even more ludicrous that others you've made.   If you honestly believe that the better AF system of the 5DIII cannot yield better images of moving subjects than the 5DII, then I feel comfortable dismissing your arguments on the subject as biased to the point of irrelevance.


Pity that you didn't understand what I wrote.

What makes a sharp photo?
Shutter speed + lens + focus

If the speed of the object is such that the shutter speed isn't enough to freeze the object then it don't matter how good the focus is, you're still left with a blurry image.


Pity that you don't understand what you wrote. 

What makes a sharp photo?
Shutter speed + lens + focus


Since the 5DII and 5DIII can obviously be set to the same shutter speed with the same lens, the difference is the AF system.  "Focus" - your word. So...what you wrote suggests that you think the 5DIII's AF is not better than the 5DII's.

I suppose I shouldn't be surprised...you also argued that the Canon DIGISUPER 75 broadcast TV lens was a camera, and you were way off base there, too (despite the fact that you refused to admit your mistake).

6281
But there ought to be some room for a EF-S telephoto lens with the inherent advantages of weight reduction from the shortcuts the lensmakers can take when designing for a smaller image circle. I am almost certain there will be something like this coming for the M-mount, and I think a conversion to EF-S would be easy, as the glass is for the same sensor size, and the difference is in the mount and flange distance as I understand it.

Anyways, a 300mm f2.8 for EF-S, at the weight as the 300 f4 or less? They could get away with a weather sealed plastic build (something like the 17-55 2.8 ) if done properly, and the price is right. (Yes, dreaming now, but...)  :)

Smell that?  It's sweet-and-sour scent of optical physics and lens design waking you from your dream...  :P

A telephoto lens design places the 'virtual' aperture at or near the front element.  So, a 300/2.8 lens is going to need at least a ~107mm diameter front element to fill that aperture with light. That front element is going to be big and heavy, and need a strong frame to support it.  A smaller image circle would mean a slight reduction in some of the internal elements, but won't really make the lens smaller (or cheaper). 

There's a reason we don't see EF-S telephoto lenses (except one zoom that actually starts in the normal range and has a variable aperture, meaning a different lens design) - there's just no real advantage to a smaller image circle at long focal lengths.

6282
Canon General / Re: Since 7D MkII isn't coming soon.....
« on: February 11, 2013, 07:12:23 AM »
The 7D is a very good camera, and will remain so after the 7DII is released (likely at a much higher price).  Now is a great time to pick up a used 7D.

6283
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 11, 2013, 06:10:25 AM »
Simple as that. I think that is hard to deny even for the biggest 5D3 hater.

You'd think so, especially from someone who claimed the AF was the only improvement from the 5DII. But I guess now even that's not a real improvement....

For the 5DC, 7D and rebel-crowd, I'm sure the 5D3 is a great upgrade. :)

...and for the 5DII crowd who shoot things that move.  ;)

You're telling me that using a 5DIII with the same shutter speed and aperture as a 5DII will result in better photos of "action"?? I'd like to know how you work that magic. Do things automatically go slower when they sense a 5DIII is taking a photo of them?

Thanks, now I understand you.  Your dislike of the 5DIII (or maybe Canon, in general) has completely eliminated any objectivity you may have had.  This assertion is even more ludicrous that others you've made.   If you honestly believe that the better AF system of the 5DIII cannot yield better images of moving subjects than the 5DII, then I feel comfortable dismissing your arguments on the subject as biased to the point of irrelevance.

6284
Technical Support / Re: Possible 7D Autofocus Issues
« on: February 11, 2013, 12:18:24 AM »
I've decided to exchange the body for a new one...

That's what I'd do in your situation... 

6285
EOS Bodies / Re: Big Megapixel Camera in 2014
« on: February 11, 2013, 12:14:38 AM »
@ anthony11 - pick many nits?

It's 6 fps.  All the Canon fps specs state 'max' or 'approx' so maybe they are all lies?

Maybe you don't shoot in the rain for fear of having to shout, "I'm melting...what a world."   :P

Do you have trouble seeing the AF points on your 5DIII?  Maybe you need to visit an ophthalmologist. They were perfectly visible to me.

Dual CF would be nice.  But two is still better than one.

So it does have better metering, right?  What's your point there?

"Vaguebook?"  Make up words much?  Try using one...

The second multicontroller is on the battery grip, also known as a vertical grip or portrait grip, officially the the BG-E11. It attaches to the bottom of the camera, providing controls for portrait orientation, and the second multicontroller makes AF point selection a lot easier when shooting vertically.  The battery grip for the 5DIII is the first battery grip to offer that feature, also found on the integrated vertical controls on the 1D X.  Sorry I didn't make that clear.

So, we agree that the 5DIII doesn't offer significantly better IQ than the 5DII, and based on the long list of your responses, there do seem to be many other changes besides just AF.  Just because you don't find those changes beneficial doesn't mean others feel the same - as noted above, the 5DIII gets high marks from a majority.

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