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Messages - neuroanatomist

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8866
EOS Bodies / Re: Canon 5D3 vs. Nikon D600
« on: October 02, 2012, 06:06:50 AM »
nikon has the better sensors for pushing the shadows.
there is no fanboy blahblah that can change that.

canon is lucky that a camera is more then the sensor.

Is it luck?  Nikon has had 'the better sensors' for several years now...years during which Canon gained dSLR market share while Nikon lost dSLR market share.  Doesn't sound like luck to me, sounds like Canon knows better where to spend their R&D yen in terms of what consumers really want, or at least their advertising yen...   ;)

8867
Lenses / Re: About to buy the 135L, and then saw this....
« on: October 02, 2012, 05:53:51 AM »
...spectacularly incompetent data presentation.

Oooo...I like that phrase. Mind if I use that at the next scientific meeting I attend?  ;)

8868
Lenses / Re: About to buy the 135L, and then saw this....
« on: October 01, 2012, 08:43:17 PM »
On a point of order, though, the 85's CA at wide apertures is axial (longitudinal), not lateral. It doesn't have any lateral CA that I've noticed.

Gosh, I hate people who post something like this to correct such a minor point. Really annoying, like picking a nit. I mean, it's not like I have ever done something like that. I mean, really.....ummm...I mean...never... It's just so annoyi.......

Oh hell, that's as far as I can get with a straight face.





(as previously instructed, I hereby and forthwith include the </sarcasm> tag)

Actually, it's a fair comment....

Of course it is. So fair, I would have made it myself, but then got busy, came back to the thread and you'd done it already.

Big, deep sigh with double face-palm.  I feel like Bill Murray's character in Scrooged - "Scare the Dickens out of people...Nobody gets me."

Ok, people, let's try this again:

I hereby and forthwith include the </sarcasm> tag.

 :P

8869
Lenses / Re: About to buy the 135L, and then saw this....
« on: October 01, 2012, 06:33:59 PM »
On a point of order, though, the 85's CA at wide apertures is axial (longitudinal), not lateral. It doesn't have any lateral CA that I've noticed.

Gosh, I hate people who post something like this to correct such a minor point. Really annoying, like picking a nit. I mean, it's not like I have ever done something like that. I mean, really.....ummm...I mean...never... It's just so annoyi.......

Oh hell, that's as far as I can get with a straight face.





(as previously instructed, I hereby and forthwith include the </sarcasm> tag)

8870
EOS Bodies - For Stills / Re: 1D X problem
« on: October 01, 2012, 05:38:36 PM »
Call Canon Service.

At least, that's what the manual says to do (p.33)if all 3 charge indicators are flashing green.

8871
EOS Bodies - For Stills / Re: Manual Mode T2i with auto ISO
« on: October 01, 2012, 05:32:40 PM »
Is it correct that this limitation (I also have this issue with the 500D) has been fixed in the 7D through a software update only?

Yes. But given that your camera has already been replaced (three times over now), I would not expect an update for you.  :(  The 7D firmware update seems to be something of a stop gap, since Canon is not yet ready to release a 7DII.

8872
Lenses / Re: Portrait Lens
« on: October 01, 2012, 04:59:16 PM »
Great shots, Neuro! It looks like all that geek knowledge of yours actually translates to good photos.

LOL.  Ummmm.....thanks?   :o

 ;)

8873
Software & Accessories / Re: Battery grip for 5D Mark II
« on: October 01, 2012, 04:10:56 PM »
The mechanical connection between it and the body is a bit sloppy, meaning that putting the camera on a tripod (attached to the grip) isn't the most rigid setup.

+1.  That's one of the things I didn't like about the grip, and conversely one thing I love about the 1D X (another is the second joystick on the portrait grip, shared by the 5DIII's grip but not as well placed there).

That screw is also gear-driven and those plastic gears can be damaged if you put them on too tightly, leading to your grip being a permanent fixture.

I didn't know this until the person who bought my gripped 5DII mentioned it when he was checking out the camera.  Mine was fine, I didn't overtighten.

8874
Lenses / Re: About to buy the 135L, and then saw this....
« on: October 01, 2012, 04:08:01 PM »
135L is magic.

I wonder how DxO would quantify that?   :o

8875
Lighting / Re: Confused about 600EX-RT and 5D mark II
« on: October 01, 2012, 04:07:04 PM »
Can I still control a group of flashes with it on the 5DII using the flash's menu?  Can I trigger some flashes optically (like my 430EX) and some through radio like the 600 (or 440EX)?

With a 5DII, the 600EX-RT cannot radio control groups of flashes.  It can still optically control groups. 

You have to choose optical or radio control with the 600EX-RT - you cannot mix them and control some by radio and others by IR at the same time.

8876
Software & Accessories / Re: Battery grip for 5D Mark II
« on: October 01, 2012, 03:54:14 PM »
Does anyone like it more for the added height more than the dual batteries?

Couldn't care less about the dual batteries.  Like the grip for the better ergonomics and better balance with heavier lenses. 

8877
Lenses / Re: About to buy the 135L, and then saw this....
« on: October 01, 2012, 02:58:33 PM »
...how dxomark has achieved such a respected and credible status when it comes to sensor reviews when it seems they "get it wrong" so consistently with lenses.

I'm not sure 'wrong' is right.  Rather, I'd say their scores only apply in a very specific circumstance, which most likely is not often relevant to actually using the lens.  My real beef with their scores, both for lenses and for sensors, is that the 'overall' scores are derived from the individual sub-measurements in an undisclosed manner, and also for the sensors that their normalization step is flawed (it generates 'impossible' data points, like >14-bit DR for a sensor with a 14-bit ADC).  Frankly, I give them no credibility for their Score metrics, but lots for their raw measurements.

In the case of lenses, they are reporting resolution as a peak measurement - the highest resolution measured at any location in the lens' FoV, at any aperture setting, and for zooms at any point in the focal range.  Maybe the lens is crap wide open and crap through most of the zoom range - DxOMark's resolution score doesn't care.  So...as long as you are using it at that aperture, and your subject is in the right place in the frame, great.  See what I mean about specific sircumstances?  DxoMark measures lateral CA, but not longitudinal CA - and LoCA is a weakness of some lenses, particularly the 85/1.8. 

They're on crack to believe that the 85 1.8 is better than the 135L. Not even in the same league.

And right there, my friend, you've fallen straight down into the pit trap that leads to heated arguments and internet flame wars.   ::)

They are not saying the 85/1.8 is the best lens.  They are saying that it achieves a higher lp/mm resolution, with their copy of the lens on their 1DsIII, at a specific aperture and a specific location in the image field.  Nothing more.  The rank-ordered list you linked does not even take into account the other factors they do measure (distortion, vignetting, LCA) much less the things they don't measure (color transmission, LoCA, bokeh, AF speed, etc.), and all of those are important to overall lens performance.

Honestly, you've illustrated the real problem with the DxOMark scoring - it's not the flawed normalization, not the 'black box' determination of overall score.  It's the fact that by taking a complex optical system - lens or camera - and reducing it's multifaceted aspects of performance to a single number, they make it far too easy for human nature to pounce on that number and say, "This one is the best." 

To sum up, IMO, DxO's Measurements are valid and useful, their Scores are meaningless, and the inappropriate interpretation that many forum posters apply to their conflated scores is reprehensible.   

Just my 2ยข.

8878
EOS Bodies - For Stills / Re: Manual Mode T2i with auto ISO
« on: October 01, 2012, 02:38:13 PM »
The 5DII, for example.  If you set M mode and Auto ISO, the ISO was fixed at 400.

Uhm then whats the point of choosing auto instead of fixed ISO urself? Seems like some kind of bug to me. But 7D also confused me that u couldnt even set an auto iso limit for such a long time!

There would be no point, which is why Auto ISO in M mode is useless on the 5DII and other pre-7D bodies.

Even with more recent bodies, it could be better - say you've got your 5DIII in M mode, Auto ISO, and want to keep the same SS and DoF, but want to over- or underexpose by a stop.  It would be great to be able to apply EC...but you can't.

8879
Lenses / Re: About to buy the 135L, and then saw this....
« on: October 01, 2012, 02:12:09 PM »
It's just incredible that they have the ego to give such poor scores to lenses that are well known and documented to be incredible lenses by other reviewers and photographers.

It seems this outfit deserves little credibility from what I've seen....I've definitely lost confidence in their reviews.

Let's be clear, though.  While I agree that their "Scores" are rubbish, their Measurements (the raw data that underlie the Scores) are fine.  The problem is the way they 'analyze' (you can substitute words like 'massage' or 'manipulate' there) those data. 

I've looked at their lens corrections and noise reduction in comparison to DPP and ACR, and I find that DxO Optics Pro does better than both (probably because the corrections are based on their thorough measurements). 

But their reviews and scores...I think only KR's are more meaningless.

8880
EOS Bodies - For Stills / Re: FoCal likes the mk3 AF
« on: October 01, 2012, 02:07:50 PM »
Does the new beta work fully automatically for the 5D3 and 1DX? That's the only thing holding me back from making a decision.

Yes - in fact, full auto is the only mode available for the 5DIII and 1D X (manual and MSC are not supported yet in the Mac version).

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