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Messages - neuroanatomist

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6181
EOS Bodies / Re: Canon EOS 6D Firmware by June? [CR1]
« on: March 07, 2013, 02:30:16 PM »
Pardon my ignorance, but what does the center focus point at f/8 acutally mean?

That the camera will autofocus with an f/8 lens attached (i.e. an f/5.6 lens with a 1.4x TC or an f/4 lens with a 2x TC).

6182
EOS Bodies / Re: Canon EOS 7D Mark II Information [CR1]
« on: March 07, 2013, 02:29:02 PM »
I don't think I'm missing the point, the point is the lens motor is powered neither at 11.1 V nor at 7.2 V. It is powered at a voltage which I don't know, but which is undoubtedly the same whichever body you are using whith whatever battery voltage/number of batteries you are using. The lens is NOT powered directly from the battery, but from a circuit which delivers constant voltage whichever body/battery combo you are using.

If the lens motor was receiving the same power from a 1D X and a 7D, then the AF speed for the lens would be the same with both bodies.  But it's not, it's faster with the 1D X.

Could it be firmware trickery on the part of Canon, the 7D delivers the same power as the 1D X, but the 7D just tells the lens to AF slower?  Possible, I suppose...but that seems a little too cynical, even for me.   :P

6183
Lenses / Re: DPReview: Canon EF 24-70 f/2.8L II Review
« on: March 07, 2013, 02:25:20 PM »
[...]
Of slightly more concern are the ~30% of shots taken between 70-105mm, but I suspect the better IQ will make that a worthwhile trade.
[...]
What is the percentage for the range of, let's say 80-105? I doubt you will 10mm much at that focal length, assuming that cropping from a 70mm FOV to 80mm FOV will not degrade IQ much

80-105mm is ~25%, and as expected there's a spike at the end of the zoom range.  Also worth noting is that I shoot quite a lot at the wide end (30% of my shots are at 24mm), and there in particular the 24-70 II is significantly better than the 24-105 from an IQ standpoint.

I think I'm talking myself into selling the 24-105L.  Did I mention that last night, I shot a few pics of the lens for a CL listing?   ;)

6184
EOS Bodies / Re: Canon EOS 7D Mark II Information [CR1]
« on: March 07, 2013, 02:14:17 PM »

It almost certainly will not be that cheap.  I'd expect a camera that's billed as a 'mini 1D X' to be priced in the $3500-$4000 range.

No, the 1D4 and all had larger mirror boxes, 1.25-1.3x crop sensors and times have changed. Not that it will be 7D launch price either of course.

We'll see (actually, we probably won't, since this is a CR1 rumor after all).  But if it's really a mini-1D X, I suppose it depends on how you define that.  If that means performance like the 1D X in most of the top line parameters (fps, AF system, etc.) but with a crop sensor, that may well come in at $2500 or $3000.  But I was thinking more along the lines of a 1D IV with a crop sensor - long shutter durability, 1/300 s Xsync, the tank-like build and sealing of the 1-series to go with the integrated grip, etc.  Canon has demonstrated that they're quite willing to charge high prices.

I do think my viewpoint is more in line with the previous comment about it being not a 7DII but a 4D, or whatever.  But I admit, I'm just wishing out loud for the feature set that appeals to me...

6185
Lenses / Re: Photozone spanks the 24-70 F4 USM L IS
« on: March 07, 2013, 02:06:11 PM »
I didn't know the 15-85 was offered as a kit, although I agree with your point.

Perhaps not in every market globally, but definitely in some...


6186
EOS Bodies / Re: Canon EOS 7D Mark II Information [CR1]
« on: March 07, 2013, 01:13:42 PM »
When you guys say $3500, it equates to R40 000 (South African rands). Can you guys imagine paying $40k for a camera?

Makes no sense.  It's not $40K, it's R40K.  How about paying 192K for a camera?  That's how many rupees equate to $3500.  How about 34 million rupiah for a camera, if you were paying in Indonesia?  It's all relative.   

6187
Lenses / Re: "Big White" lens choice
« on: March 07, 2013, 12:56:48 PM »
...but the 200-400 f4 is in the same price range, and kind of gets you "everything telephoto" in one lens.
I would at least rent the lens and see if you like what it offers.

What is the list price for the 200-400/4, and from whom could one rent it?  ::)

6188
EOS Bodies / Re: Canon EOS 7D Mark II Information [CR1]
« on: March 07, 2013, 12:28:20 PM »
Neuro, I'm not mentioning voltage at all, instead I said 'current'. I think the two batteries in the grip are not 'used' in an alternate sequence, they are used simultaneously. Actually, inserting two discharged batteries, both incapable of even letting you switch the camera 'on' when used alone, will let you switch the camera 'on' and even shoot photos. It's the shutter count per battery that is calculated in an alternate sequence, being not possible to show 1/2 increments per battery, which would be nonsense. They are connected in parallel, so the voltage is the same, but are capable of delivering double the current of a single battery

Makes sense.  However, empirically the single battery of a 1-series does drive the lens AF motor faster than the pair of batteries used in a grip.  This is evident when a 'slow focusing' lens like the 85L II (where the focusing group movement is visible and slow enough to be easily seen) is focused from MFD to infinity on the 1D X vs. a gripped 7D, with fresh batteries.  I'm not sure about the electronic basis for the difference in AF speed (current draw or firmware), but the difference is there.

6189
Lenses / Re: Tripod collar for 200mm f/2.8 L?
« on: March 07, 2013, 12:20:27 PM »
I checked the Canon site where they list their tripod adapters and they don't say which one fits the 200 prime.

The 200/2.8L II takes the Canon Tripod Mount Ring A - there are actually four of them out there: A (B), A II (B), A (W) and A II (W).  The MkI and MkII versions are interchangeable (slightly different styling), B=black and W=white. 

Here's the B&H version (Vello) - http://www.bhphotovideo.com/c/product/822975-REG/Vello_TC_AB_Tripod_Collar_A_Black.html

6190
Speedlites, Printers, Accessories / Re: need advise on what speedlite?
« on: March 07, 2013, 11:52:49 AM »
So, i was looking at the canon 600ex-rt and the Canon ST-E3-RT Speedlite Transmitter, yes i know a 900.00 investment is a lot but is it worth it for what i want to do. Or for now should i just look at the 430exii or the 580exii and get a pocket wizard or some other radio transmitter. 

or am i better off getting some sort of studio strobe and can add on to it as needed.

Indoors, with a small number of subjects, a Speedlite based setup can be fine.  I'd recommend checking out Syl Arena's excellent Speedliter's Handbook

If you're going to put the flash in a softbox, the more power the better - the 430EX II does ok with a smallish softbox (I use them in Lastolite 24" Ezyboxes), but they need to be pretty close to the subject.

If you're going to be shooting outdoors, trying to overpower the sun, a monolight setup is better (can be done with Speedlites, but you have to gang several of them together inside a modifier to have sufficient power). 

Cost is another concern - an excellent monolight like the Paul C. Buff Einstein 640 costs less than a 600EX-RT. 

Personally, I have an Einstein and 3 speedlites (one 600EX-RT, two 430EX II's), and I trigger with PocketWizards.  The advantage there is that I can trigger Speedlites and the monolight with the same system.  The powerful monolight lets me use a nice, big softbox (a 48" octabox) for soft, 'wrap-around' light.

If I was going to go with a Speedlite-only system, I'd definitely get the 600EX-RT + ST-E3-RT, or multiple 600's. 

6191
EOS Bodies / Re: Canon EOS 7D Mark II Information [CR1]
« on: March 07, 2013, 11:12:39 AM »
They really need to improve on image quality and noise performance at all iso's.

True, but it's all relative.  I consider anything over ISO 400 to be 'high ISO' on the 7D.   ;)

I have never considered the integrated grips as a plus. A *truly* integrated grip as those in the 1 series is actually a major gripe of mine.

This is one of those 'less filling/tastes great' debates with no right answer. For people who don't routinely use a grip, an integrated grip just adds weight and bulk they don't want/need. For people who do routinely use a battery grip, the integrated grip is a plus compared to the add-on (no flex so it's much better for tripod shots; better ergonomics, for example the second multicontroller on the 1D X is ideally placed, and it's location falls right at the junction of the 5DIII with it's grip, so it's in a different place on the BG-E11).

6192
Lenses / Re: Photozone spanks the 24-70 F4 USM L IS
« on: March 07, 2013, 11:06:00 AM »
Your logic clashes with the reality of facts being that this lens is going to replace the 24-105 as FF kit lens. And I can see why people react with a loud WTF.

Can I ask...what is the basis for your statement of 'fact' that the 24-105/4L IS will be replaced by the 24-70/4L IS as the FF kit lens, i.e. the 24-105L will be discontinued?  Did I miss an announcement from Canon?
¨

No, you didn't, but hopefully we can agree that everything points in that direction? The 5D2 wasn't discontinued the day the 5D3 became available, but we all knew it was going to happen. The 24-105 was due for a refresh, and the 24-70 is very much similar: standard L zoom, f/4, IS, etc. I also remember reading that it was going to be offered as a kit lens as well and I doubt there will be an overlapping.

Hopefully we can also agree that this new lens will not sell half as much as Canon would like as long as the more versatile, much cheaper 24-105 is around.

Time will tell.  When the 100mm f/2.8L Macro IS was introduced in 2010, it was a commonly held belief that the 100mm f/2.8 Macro (non-L) lens, which was 10 years older and much cheaper, would soon be discontinued.  Three years later, the non-L 100mm macro is still part of the current Canon USA lineup. 

While prices of lenses have certainly gone up, I see a continued need for Canon to have a kit lens that's 'reasonably' priced.  For example, the $700 EF-S 15-85mm lens is offered as a kit lens with the 7D, whereas the >$1000 EF-S 17-55mm lens is not.

6193
Lenses / Re: DPReview: Canon EF 24-70 f/2.8L II Review
« on: March 07, 2013, 10:57:47 AM »
Personally, I'm not too sure of what I would do ... After reading such reviews of the 24-70 II, it feels like its time to try it out.

Yeah, I've decided that I'm getting the 24-70 II.  Just trying to decide if I should accelerate that purchase by selling the 24-105L to offset the cost. 

For normal use (shooting people), I'm not too fussed about giving up IS.  Looking at my stats for the 24-105L on the 1D X, less than 4% of my shots are at slower than 1/125 s (I set a 1/125 s minimum shutter speed) - and the ones that are slower are mostly 1/60 s (likely flash shots).  Of slightly more concern are the ~30% of shots taken between 70-105mm, but I suspect the better IQ will make that a worthwhile trade.  Also, the improved AF accuracy with the combination of the newer bodies and 2012- lenses is a big factor.

I just have this feeling that after getting the 24-70 II, I really won't use the 24-105L at all...and if that's going to be the case, why not get the new zoom that much sooner?

6194
Lenses / Re: Just wondered, will this fit.....
« on: March 07, 2013, 10:30:54 AM »
2xII vs. 2xIII not very different, optically.  I picked up the 2xIII recently, mainly for the better AF performance with supertele lenses.

6195
EOS Bodies / Re: Canon EOS 7D Mark II Information [CR1]
« on: March 07, 2013, 10:21:02 AM »
I think this would be a game changer IF it comes in under $2.5k.

It almost certainly will not be that cheap.  I'd expect a camera that's billed as a 'mini 1D X' to be priced in the $3500-$4000 range.

my bet 3299$

Could be.  There's logic to having it come in a bit cheaper than the 5DIII MSRP. 

We’re told that the larger battery seen in the EOS-1D X is part of the reason it will autofocus bigger lenses better than a camera with say an LP-E6.

Which means using 2xLP-E6 in the grip should allow the same autofocus performance, and, I would add, should also allow driving a burst speed of 12+ fps, a feature which would draw even more current than a big lens AF.

No, dual LP-E6 ≠ one LP-E4N.  With two batteries in a grip, the voltage output of them is not added, they are used in an alternating sequence. The 1-series bodies drive lens AF motors faster because the battery delivers a higher voltage.

It should have nothing to do with the fps, either - adding a grip to a dSLR isn't required for higher frame rate AFAIK (although it was with film bodies to drive the film winder faster).  Even with Nikon bodies where the grip provides a higher frame rate, there's a firmware hack that enables that higher frame rate without the grip, i.e. the higher frame rate with grip is a Nikon marketing ploy to sell an expensive accessory.

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