October 24, 2014, 09:47:11 PM

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Messages - neuroanatomist

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31
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 22, 2014, 10:42:12 PM »
Sure, if you are doing portraits, where DoF matters, you'll go with FF. The same holds with low light where you want to minimize noise.  However, if I were going to visit Alaska or Yellowstone, I think I'd buy a MFT camera and the Zuiko 300/2.8 lens rather than the 600/5.6 for my Canon.  The combo will be cheaper, lighter, smaller and unless I'm shooting at dusk or dawn, the grizzlies will show the same size (and probably comparable IQ) on the same size print, or my screen.

Indeed.  Because we all know having deeper DoF makes for better wildlife images.  For example, the first image is much better than the second, it's much better that all the distracting stuff behind the subject is decently sharp focus.   :o




32
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 22, 2014, 04:16:42 PM »
I must have misread. I was under the impression that some people were arguing that 2.8 lens let in the light of an f8 when on the micro 4/3 mount.

Only two stops different (f/2.8 vs. f/5.6), not three (f/8).  But it's worth noting (again, it was mentioned earlier) that even though exposure is the same since it's based on light per unit area, total image noise is proportional to total light gathered, so with the smaller 2x crop sensor, you're not only gaining two stops worth of DoF, you're gaining two stops worth of noise.  Or, if you prefer, you can stop down the FF sensor to match DoF, and if you don't need to maintain the same shutter speed you have less noise, while if you do need to maintain shutter speed you boost ISO and you're no worse off with the FF sensor.  So...the smaller sensor gives you the ability to choose shallower DoF and/or lower noise if you want, or produce an equivalent image if desired.

33
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 22, 2014, 03:41:05 PM »
For canon, exposure for a 400mm 5.6 on a crop (640mm 5.6) is the SAME exposure as a 400mm 5.6 on a full frame. By using a crop sensor the aperture doesn't magically shrink. Just like taking the center section of a full frame image to give the same view as a crop sensor does not shrink the aperture.

Yes, we know.  But that doesn't make the resulting images equivalent.  If you think it does, you may be trapped within the circle of confusion...   ;)

34
EOS Bodies / Re: 7d mark II as reviewed by Artie Morris
« on: October 22, 2014, 01:47:30 PM »
Funny how this thread has become all about Arthur Morris, with a little DPP thrown in.  What was the title?

Given that Arthur Morris is referenced in the title of the thread, and DPP is the only raw converter that works with 7D Mark II files, I'm not sure there has even been a significant digression…

35
EOS Bodies / Re: 7d mark II as reviewed by Artie Morris
« on: October 22, 2014, 01:16:32 PM »
...I think Artie Morris is in an excellent position to provide insights and valuable comments - but his position as a salesman of Canon products means we should treat what he says with some degree of caution.

It's important to keep such motivations in mind.  For example, his recommendation of the 70-200/2.8L IS II + 2xIII over the 100-400L...it doesn't make much sense from an optical, AF, or handling standpoint…but it makes perfect sense from the standpoint of financial gain for Artie Morris.


My 2cents regarding the DPP question - I have used it a few times (largely in part due to what Artie Morris, amongst others, have written about it) but cannot find any advantage from an image-editing perspective of DPP over ACR (quite the opposite). The only advantage for my workflow that DPP has over ACR is that it shows you where the focus point on the camera was for each shot.

DPP does have a major, albeit temporary, advantage – if you buy a camera body just after it is released, DPP is the only RAW converter that will handle the files.  For me, the wait is a little longer since DxO not only has to update their software to handle the new files, they also have to test all the lenses in combination with the new body to generate their lens plus camera specific modules.

Displaying the selected AF point(s) is not unique to DPP.  I use Aperture for library management, and it also displays the selected AF point(s).

36
Reviews / Re: Camera Store Trashes New G7X
« on: October 22, 2014, 09:17:03 AM »
I guess you didn't like the part about:

Canonitis
Noun/Latin Origin
- To never go the full step you really need to innovate and take over the market.


Take over the market from whom?   Who is the market leader for digital still cameras and dSLRs?

37
EOS Bodies / Re: 7d mark II as reviewed by Artie Morris
« on: October 22, 2014, 07:58:16 AM »
I spent 1 day in Florida this year and got half a dozen keeper shots in that single day - birds are abundant and incredibly tame and it makes for extremely easy wildlife photography. I'm not saying Mr Morris is a poor photographer (far from it - he is very accomplished) but I certainly dont see anything special in his work, he is simply a competent photographer out there shooting with good equipment, in good locations, with numerous photographic subjects a hell of a lot.

Like real estate...location, location, location.   On the Anhinga Trail in the Everglades, the birds for which it's named are now so habituated to humans they perch on the boardwalk railing...UWA bird photography. 

Those of us who don't live in Florida or New Mexico, and have limited opportunities for travel, must work harder locally.

38
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 22, 2014, 06:26:03 AM »
Have you seen the "ZUIKO DIGITAL ED 300mm F2.8"?  In FF equivalent it is a 600 f/2.8 ...

600/5.6.  You don't get something for nothing.

It's always both amusing and rather sad that people don't understand the word "equivalent".

39
6D Sample Images / Re: for those who snub the 6D AF...
« on: October 22, 2014, 01:24:26 AM »
A series with the 6D/24-105... AF-Servo and a friend's kid running towards me.  Tracked him pretty well.  Just since it seems there's quite a few who would want you to believe the 6D doesn't work well for this. 

Bright light (1/500 s, f/4 , ISO 100 = 13 EV), good contrast between subject and background, keeping the subject centered in the frame so only the center point is used, and at f/4 DoF isn't very shallow.  Actually, my Rebel T1i did pretty well in situations like that, too. 

40
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 21, 2014, 06:39:35 PM »
Just go shoot low-light sports with a 1Dx and a 7D.  You'll quickly, very quickly, be able to differentiate crop vs. FF.
Actually, before that you clearly see the difference in time to pay the camera. ::)
EOS 7D Mark II preorder:  $1799
EOS 6D after mail rebate:  $1699
So, which is the FF camera?   ;)
Dear friend Neuro:
Were not you the one who always said that there are more important things in a camera, besides the sensor? ??? :P
With the exception of the sensor, 7D Mark ii seems a 1DX competitor rather than 6D. ::)

Of course.  But obviously price is no longer an absolute differentiator between crop and FF.

41
EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 21, 2014, 05:42:51 PM »
Just go shoot low-light sports with a 1Dx and a 7D.  You'll quickly, very quickly, be able to differentiate crop vs. FF.
Actually, before that you clearly see the difference in time to pay the camera. ::)

EOS 7D Mark II preorder:  $1799
EOS 6D after mail rebate:  $1699

So, which is the FF camera?   ;)

42
EOS Bodies - For Stills / Re: LP-E6N Backwards Compatible
« on: October 21, 2014, 07:57:24 AM »
I keep thinking, Canon sells battery grips, why on Earth don't they sell chargers that can charge two batteries simultaneously?

They do...for the 1-series bodies.  :P

For other Canon dSLR batteries, check out the hähnel ProCUBE.

43
Third Party Manufacturers / Re: How Strong is a Sony Lens Mount
« on: October 20, 2014, 10:19:08 PM »
This is not applicable to the A7

The linked page states,

Compatible Cameras
All Sony Alpha NEX E-mount Camera Bodies, Including:
Sony Alpha α7, α7r, a6000


...and goes on to say the a7S has a full metal mount.   :o

44
EOS Bodies / Re: Patent: Canon EF 2.0X TC With Diffractive Optics Element
« on: October 20, 2014, 11:44:13 AM »
It has been my experience, that most people purchase a medium-range fast-aperture lens, and then down the road a bit, they add a TC to the kit/gear bag.
But to find yourself suddenly nursing a 600mm f/4 with a TC on a thin-walled-camera-body. I see a chance of heart-break.

I don't understand your point.  I've used a 70-200/2.8 and a 600/4 with TCs, on and off tripods.  The lens mount on all bodies is quite strong.

45
Lenses / Re: 100-400 with 1.4x teleconverter on crop body
« on: October 20, 2014, 10:44:38 AM »
I've used the 100-400L + 1.4xIII combo on my 1D X, and I'd call the IQ 'decent' but not great.  Here are a couple of examples.  I doubt I'd even consider ISOs this high on a crop body, even the 7DII.


EOS 1D X, EF 100-400mm f/4.5-5.6L IS @ 560mm, 1/320 s, f/8, ISO 5000


EOS 1D X, EF 100-400mm f/4.5-5.6L IS @ 560mm, 1/320 s, f/8, ISO 10000

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