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Messages - neuroanatomist

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7306
Software & Accessories / Re: BG-E9 Question.
« on: September 24, 2012, 02:27:33 PM »
I was wondering if this would increase the risk of dust and water entering the camera or is it designed to fit so tightly that it seals? I would have thought that they would put an O-ring on it but maybe I'm just being pedantic?

I think it does negatively impact the weather/dust sealing of the body.  The design is consistent across all the 'sealed' models - even the 7D (which has a higher level of sealing than the 60D) has no seal for the grip.

In fact, they wouldn't have to have an O-ring all the way around (nor would they - O-ring seals are few and far between outside of the 1-series).  The non-gripped body is sealed at the battery door by a foam seal that is on the door itself.  It would seem to be very simple to design it such that the seal is on the body where the door connects, and thus a similar surface design on the grip connection would provide equivalent sealing at the battery compartment opening. 

As it is, the 'seal' with the grip attached is only gravity - water flows down.  If you use the body with the grip attached, in the rain, and then invert your camera, it seems to me that water that got between body and grip (and the curve would seem to direct it there) will flow 'up' along the battery compartment, reaching the contacts where you obviously don't want water.

This is one reason I prefer a 1-series body for shooting in the rain.

7307
EOS Bodies / Re: Why are flash sync shutter speeds getting worse?
« on: September 24, 2012, 02:20:52 PM »
You guys do realize your complaining about 1/20th of a second difference between the D600 and 6D, right? That is 0.0005 seconds difference! It really doesn't matter that much, and given the design of the 6D as a low-light camera capable of ISO 25600 and AF at EV -3, it matters even less. You could bump up the ISO by a third of a stop for pretty much ANY exposure and compensate for the difference if you really, really needed to. Now, if it was a 1/60th sync speed vs. a 1/200th sync speed, that would matter, but thats not the case.

please stop talking about things you don´t understand!!

ISO affects FLASH and AMBIENT exposure.. it´s obvious you don´t know what strobist are talking about.

yes 1/200s was already bad... doesn´t change a thing that the trend to make it even worse is a bad sign.

I think jrista makes a fair point.  I agree that 1/200 s X-sync isn't good, and 1/180 s is worse.  But the difference is only 1/6-stop. 

OTOH, despite the ISO improvement in recent sensors which would allow you to more than make up that 1/6-stop in terms of noise performance, that's not going to help stop action. That 1/6-stop is well and truly gone. 

7308
Lenses / Re: Canon 500 availability ?
« on: September 24, 2012, 02:10:48 PM »
Another factor in my decision is the portability of the new 500. The thing is very light, and I will still be able to use it with the Jobu Jr 3. I want a run and gun type of setup, where I can do a lot of moving around and setting things up quickly. While the 500m might be crazy for this type of setup, I think the 600mm would have been even crazier. I was also worried that the 600 would really limit my traveling capabilities if I ever take it on a plane. What are your thoughts on the 600 vs 500 given what I have said? Also, I would need to possible purchase a new gimbal head, backup, etc with the 600mm, but the 500mm will still work with everything I got. Combined with the extra $2.5k for the 600mm, it just didn't seem worth it.

Well, it seems you're pushing it with the 500 II and the Jobu Jr 3.  For the Jr 3, they state, " Recommended for: 70-200 F2.8/F4, 300mm F2.8/F4, 100-400 zoom, 150-500 zoom, 400mm F5.6, 400mm DO, etc."  The new 500 II, while 1.5 lbs lighter than its predecessor, is still 50% heavier than the 400 DO.  For the 500 II, Jobu recommends the BWG-LW3/HD3.  Note that they state you can use the Jr 3 with the 500/4, and they apparently mean the original 500/4...the new 600/4 II weighs the same as the original 500/4, so technically, either would work with the Jr 3, although they recommend a step up for routine use.

As for travel, the bare lenses are very simliar in diameter (yes, I know the Canon specs show a 1" difference, but Canon's specs do not include the tripod foot - TDP's actual measurements, which include the tripod foot, show the 600 is only 0.14" larger in diameter than the 500).  The 600 II is ~2.5" longer, but still under 18". So, either bare lens will fit in a Storm im2500 or Pelican 1510 airline carryon hard case.  The 'problem' is the hoods - with the hood reversed, the 500 II will fit in a Peli 1510 (snugly) and probably in a Storm im2500 (not sure about that, the Storm is 0.4" shorter).  The hood for the 600 II is approximately 8" x 8" and will not go in a carryon hard case.  Still, personally I'd be fine putting the hood in checked luggage, and carrying on the lens itself in a hard case.

So, I do think in this case (as in most lens decisions) it comes down to what is the best focal length for you. 

7309
EOS Bodies / Re: 450D to 6D
« on: September 23, 2012, 05:40:14 PM »
I've already got a ... non L 70-300mm

If you use it longer than 135mm, I suspect you won't be happy with the non-L on FF.  The L version is a fantastic lens. At $1K for a refurb, even I'm tempted!

7310
Software & Accessories / Re: who uses Focal or similar?
« on: September 23, 2012, 05:07:47 PM »
I've used it extensively to calibrate my 7D and 1D IV. Unfortunately, there's a bug which stops it working with a 1D  X

Bug?  Can you elaborate?

I trust you're aware that the PC version only works in MSC mode with the 1D X and 5DIII (you have to change the AFMA values manually). The Mac beta has full auto for the 1D X.

7311
EOS Bodies / Re: DxOMark Sensor Performance: Nikon vs. Canon
« on: September 23, 2012, 04:30:24 PM »
Just compare their DxO Optics Pro software raw conversion results to those from Adobe software regarding detail extraction and image sharpness.
(At least with Canon raw files. I have never tried any Nikon files due to the lack of a Nikon camera...)

While the DxO software is pretty good for a quick conversion, they are miles behind in other aspects.
So how should they be able to judge about sensor quality if they do not know how to get the optimum results of them?

I have compared. I think DxO is a better RAW converter, particularly with better lens corrections and ISO noise with detail preserved.

But I still think their Scores are BS.

7312
EOS Bodies / Re: 450D to 6D
« on: September 23, 2012, 02:53:27 PM »
You may need a flash, if you don't have one now.

Else, the main risk IMO is that you'll like the images from the 6D so much, you'll want a full set of EF lenses...

7313
EOS Bodies - For Stills / Re: 5DIII minimum shutter speed is not working
« on: September 23, 2012, 02:34:55 PM »
So it's either a firmware bug or a bug in the "info" portion of the menu there. 

I expect it's neither, but functioning as designed. The footnote on p.128 of the manual indicates that if a correct exposure cannot be obtained at the max ISO of the selected range, a shutter speed lower than the chosen minimum will be used.  So, it seems to be intended as a 'soft' limit.

As pointed out above, for the 'min shutter speed in Auto ISO' available on the 5DIII, the 1D X has that setting, but also has 'hard' limits (lower and upper) that can be applied to shutter speed and aperture, which the camera will not override to get a correct exposure.

So, if you absolutely require a min shutter speed on the 5DIII, your best bet is probably to set the max allowable ISO at the top (or use Tv or M mode).

7314
EOS Bodies - For Stills / Re: 5DIII minimum shutter speed is not working
« on: September 23, 2012, 02:00:17 PM »
The Minimum shutter speed is not working on my 5D.
I set it to for example minimum 1/250,
i will shoot with, auto iso. AV mode. F4 (same with P mode)
the camera will still take picture at speed slower than 1/250 like 1/50

anyone know who does this work?

manual page 128
I noticed the same problem... Another reason why the 5D III is not as useful as some people might think... On my 1D4 I can set min and max shutter speeds for all modes, no matter the ISO or flash modes... I really can't wait for the 1D X.

Sorry to dig up an older thread, but seems better than posting a new one.  Agreed, this still doesn't work.  When in P mode with iso set to auto, the minimum shutter speed stays at or faster than what one chooses (i.e. this mode works).  Frustratingly, when in Av mode, the minimum shutter speed frequently falls slower than the value set (i.e. the minimum shutter speed doesn't work).  One might argue that it is only intended by canon to work in P mode, but in the menu screen where one sets the minimum shutter speed the "info" button indicates that it should work both in P and Av mode.

So it's either a firmware bug or a bug in the "info" portion of the menu there.  Does this drive anybody else crazy, or does it work for other people?

Do you have Safety Shift enabled?

7315
Lenses / Re: Canon 500 availability ?
« on: September 23, 2012, 10:06:47 AM »
I do have issues with the design of the tripod foot. The balance is wrong for me when using it on my video head. Curious if anyone else has seen this. I haven't read anything about it in any of the reviews.

Are you directly mounting the foot, using a lens plate (which one?), or a replacement foot (which one?)?

7316
EOS Bodies / Re: Comparing 6D with 5D3
« on: September 22, 2012, 08:18:28 PM »
AF Center Point:   -3 vs. –2 EV   = 6D is 33% more sensitive in low light

EV, like stops, is log2.  So, not 33% more sensitive, the 6D works in half as much light.

But of the two, I'd still pick the 5DIII.

7317
Site Information / Re: Why do some posts get locked for no apparent reason?
« on: September 22, 2012, 06:19:28 PM »
I've noticed that threads with too many references to The Princess Bride frequently seem to get locked. That may just be a coincidence.   ::)

7318
Lenses / Re: Photozone's review of the EF 24-70 f/2.8L II is up
« on: September 22, 2012, 04:58:00 PM »
Kinda glad I didn't preorder one.  :o

7319
They're both spec'd to the same sensitivity, -0.5 EV. But there's lots of anecdotal testing showing the 5DII is better in low light (I certainly found that to be true, compared to my 7D).

7320
Lenses / Re: Drop in Filter for EF 500 or 600 f/4L IS II USM
« on: September 22, 2012, 08:56:00 AM »
The big supertele primes (which include the 300/2.8 but not the 400/5.6) cannot take a front filter at all.  Also, a filter must be in the drop-in slot (the lenses come with a clear filter installed, that also serves as a gelatin filter holder, and is part of the optical formula of the lenses).

You can get a drop-in holder for 52mm filters. That would only be if you want an ND filter (a slower shutter speed can't 'just be added in post').

If you want a CPL, the Canon 52mm drop-in CPL is the only real option.  It has a knob on the outside to rotate the CPL.  The effects of a CPL also cannot be duplicated effectively in post.

Not sure about Germany, but in the US there's a back order queue for the 500/600 II. If your trip is soon, order now...

Get a good monopod, at least, and for tripod use, get a gimbal head (a ballhead is a bad idea, even if the load rating is plenty high).

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