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Topics - neuroanatomist

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1
Canon General / DxOMark vs. Reality
« on: October 09, 2012, 09:13:17 AM »
There are lots of posts about DxOMark, lots of support, lots of bashing, some of it fact-based, much of it hearsay and knee-jerk reaction.  There are many posts about sales figures, generally fewer than about DxOMark, and generally with even less of them with real facts.

So...let's do a little reality check, about the past 5 years in DxOMark-land and the past 5 years in the real world.

The year is 2007.  Nikon has the D3 as a flagship and the D300 as the prosumer APS-C body.  Canon has the 1DsIII and D40, respectively.  DxOMark scores the D3 as 81, the 1DsIII as 80 - a meaningless difference, by their standards.  The D300 scores a 67, while the 40D scores a 64 - that is starting to look like a real difference. 

2008 saw Nikon enter the 'affordable' FF market with the D700, which DxOMark scores an insignificant 1 point higher than Canon's 5DII at 80 vs. 79.  2009 had updates to the high-end prosumer APS-C segment, and Nikon's D300S scores a 70, while Canon's 7D scores a 66.  2010 brought us mid-range APS-C updates, and while the 60D with the 7D's sensor scores a 66, the D7000 scores an 80, beating Canon's then-current FF sensors.

This year, the somewhat-less-affordable FF battle continues, with the 5DIII scoring 81, barely better than it's predecessor, while the D800/E scores a very impressive 95/96, soundly beating all Canon cameras as well as every other sensor DxOMark has ever tested, including medium format bodies with sensors with 2.5-times larger sensors.

So, it seems quite clear that over the past 5 years in DxOMark-land, Nikon has been dramatically improving, Canon has been stagnating, and Nikon is way ahead.  But that's DxOMark-land.  What about the real world?

Canon and Nikon are publicly traded companies, and as such, they publish their annual and quarterly reports (in the Investor Relations sections of their corporate websites).  IDC (a market analysis firm) also publishes annual summaries of the market as a whole.

In 2007, Canon had 43% of the dSLR market, Nikon had 40%.  In 2010, Canon had 44.5% of the dSLR market, Nikon had 29.8%.  So, over years while Nikon was bringing us better sensors than Canon, Nikon was losing market share while Canon was gaining it.  Ok, fine, but that's 2010.  What about this year?

In 2Q2012 (by calendar year, they report it as 1QFY2013), Nikon had an 18% y/y growth of unit sales of dSLRs and lenses.  In 2Q2012, (they report by CY, not FY), Canon had a 47% y/y growth of unit sales of dSLRs and lenses.

So, DxOMark has said Nikon has had better sensors for years, and the sales data show that Canon has sold more dSLRs and lenses for those same years, and continues to do so, as of the most recent data available.  The straightforward conclusion from the above is that while DxOMark's Scores have a huge impact on the number of inflammatory posts on Internet discussion boards, they have no meaningful impact on the real world aggregate buying decisions of consumers.

2
Lens Gallery / Canon EF 600mm f/4L IS II USM
« on: October 06, 2012, 04:51:30 PM »
Post your shots from Canon's longest MkII supertele!

Got mine a few days ago, have only had a couple of chances to use it, and those were close to home.  Looking forward to having a bit more free time to travel to some better local spots (Plum Island, etc.). 

All shots taken handheld, first two with the bare lens on an overcast, drizzly late afternoon (note the ISO used), the third on a sunny day (only one this week!) with the 1.4x III, and the last one

Thanks for looking!


EOS 1D X, EF 600mm f/4L IS II USM, 1/320 s, f/4, ISO 6400


EOS 1D X, EF 600mm f/4L IS II USM, 1/250 s, f/4, ISO 6400


EOS 1D X, EF 600mm f/4L IS II + EF 1.4x III Extender, 1/640 s, f/5.6, ISO 100

...and one bonus shot, the first one I took with the new lens.  It was pouring rain and dark outside, so I decided to treat it as an indoor portrait lens.  ;)  This one is with the 1D X, f/4, 1/160 s, ISO 10000 and handheld.

3
EOS Bodies - For Stills / 430EX II AF assist for 1D X/5DIII
« on: September 07, 2012, 11:42:37 AM »
Finally got around to testing the AF assist lamp coverage of the 430EX II with the 61-pt AF system of the 1D X (and 5DIII).  With a focal length of wider than 35mm, the outermost columns (which are f/5.6-sensitive lines) are outside of the coverage area.  At 35mm and longer focal lengths, the 430EX II's assist lamp covers all 61 points. 

The 600EX-RT provides full coverage, of course.

4
This was an outdoor jazz concert at a local science museum, featuring Nathan and the Zydeco Cha-Chas.  The shots below were taken about 30 minutes after sunset.

Shot RAW, converted using default settings in DPP, only edit was cropping.  Click image then View All Sizes (upper right) for a 1600 pixel version.  Thanks for looking!


EOS 1D X, EF 70-200mm f/2.8L IS II USM @ 200mm, 1/320 s, f/2.8, ISO 4000


EOS 1D X, EF 70-200mm f/2.8L IS II USM @ 200mm, 1/250 s, f/2.8, ISO 4000


EOS 1D X, EF 70-200mm f/2.8L IS II USM @ 70mm, 1/200 s, f/5, ISO 12800

5
How could we all have missed this?  Surely it wasn't the distraction of a new xxxD body and two new lenses?

From the Canon UK site:

New lifestyle camera bag - 300EG

Canon also today announces the launch of a new camera bag, the new 300EG - designed with enough room to hold one camera body, 2-3 lenses, as well as a number of accessories. The 300EG bag also features padded pockets and compartments to keep your photographic equipment safe and secure. The cross strap, messenger style bag makes it easy to access your equipment when you need it, while the additional waist straps give you a more stable carrying position when on the move.

The 300EG Camera Bag is available from 15th June 2012, priced at £79.99/€89.99 RRP incl. VAT.


6
Speedlites, Printers, Accessories / Sto-Fen OmniBounce for 600EX-RT
« on: May 22, 2012, 10:09:57 AM »
Got the new Sto-Fen OmniBounce for the 600EX-RT last week (ordered from Adorama, now B&H has them, too).  Fit is very snug - tighter than the ones for the 430EX II. There were early reports that the older one for the 550EX would fit, but I wondered about the gel sensor.  On the one for the 600EX-RT, there's a little notch for the gel sensor. 

The flash with the Sto-Fen mounted is too large for the Canon pouch (barely - the velcro closure still overlaps by a couple of millimeters), but it's a perfect fit in the Lowepro Quick Flex Pouch 75 AW.

7
Site Information / Smartphone users - interested in Tapatalk?
« on: December 28, 2011, 02:17:42 PM »
Hi All,

I'd like to gauge interest in using Tapatalk to access these forums.  Tapatalk is a smartphone app that facilitates forum access; I've used it on other forums, and find it to be easy to use (easier than using a browser on a smartphone, and in some ways, easier than a computer browser, too!).  The Tapatalk app is available for iPhone/iPad, Android, and Blackberry phones (and apparently for Google Chrome now, I just noticed when looking up the link above).  It's not free - $2.99 from the Apple App Store, not sure about the cost for other platforms.

Note - no guarantee that it will be supported here in the future, just trying to assess interest.

Thanks for reading!

8
PowerShot Cameras / PowerShot S100 reviewed and compared to the S95
« on: November 09, 2011, 03:45:03 PM »
My goal is to make this a quick, readable review that hits the highlights.  I’ll leave a lot of the technical details to the big review sites, although I will include some IQ comparisons.

First impression is that the S100 is a great little camera.  It combines a rich feature set, including GPS, and good IQ, including the ability to save RAW images, all in a form factor that actually fits into a pocket.  So, if you’re looking for a small camera that shoots RAW, the S100 is a great choice.

But, what if you have the S95, or the S90 (same sensor as S95) – should you upgrade to the S100?  I’d say, “Yes!”  No, I’m not a Canon marketing shill, but unlike the relatively modest changes from the S90 to the S95, the S100 is a major upgrade to the line.  Most important is the new sensor, going from a 10 MP 1/1.7” CCD to a 12 MP 1/1.7” backlit CMOS.  The new sensor delivers much better performance at high ISOs (although the real reason for the change was likely the need for a sensor to support 1080p video shooting).

I’ll get to the IQ later, but first I’ll hit on the highlights of the other changes.  First off, the zoom of the S100 range is broader, equivalent to 24-120mm instead of 28-105mm.  While they maintained f/2.0 at the wide end, less welcome is the decrease in max aperture at the long end, amounting to a loss of a bit over 1/2-stop of light.

The ergonomics of the S100 are an improvement over the S95.  The surface is more textured, and there are grip areas for fingers and thumb that make holding the S100 more secure.  Buttons have been moved around a bit, and a dedicated movie button is included.  I like the strap included with the S95 better – it’s flat and more supple than the S100’s strap (so, I just switched them). 

One of the big changes is the exposure adjustment function accessed by pressing on the 12-o’clock position of the rear control dial – it’s the same icon as on the S95, but the function is different.  On the S90, one big complaint was that the rear dial turned too easily, resulting in lots of inadvertent changes to EC.  On the S95, the dial was made ‘stiffer’ with positive detents, but it was still pretty easy to inadvertently apply EC.  Pushing that exposure adjustment ‘button’ merely changed the display.  On the S100, you must push that button to adjust EC – otherwise, rotating that dial does nothing in Av/Tv modes.  Means one more step to adjust EC, but it’s quick to push and spin the dial, and much better not to do so inadvertently!

It’s true that ISO is fixed at 80 for exposures longer than 1 s in Tv and M modes.  I don’t really have a problem with that – with exposures that long, you need a tripod and noise is a bigger issue, so I’d almost certainly set the ISO to 80 anyway.  But, it does seem odd for a ‘fully manual’ camera.

On to the IQ comparisons – I’m not really going to cover sharpness, distortion etc., but rather show noise and color performance over the ISO range.

Shots were taken with the setup shown here, and were shot as RAW images converted with default settings in DPP.  My interpretation of the results is that the ISO noise performance of the S100 is around 2 stops better than the S95.  Two stops – that’s huge!  Nothing comes for free, though.  To my eye, the S95 delivers slightly better color, and with increasing ISO on the S100 there is a progressive desaturation of the red channel – note how the red patch in the middle row gets progressively pinker.  This is something I noticed in my comparisons of the 5DII and 7D, and it does not seem to occur with the S95 (perhaps a difference between CMOS and CCD).

Here are the noise and color crops (click for larger, up to 1600 pixels wide with View All Sizes):

    

Overall, I’m really pleased with the S100.  It will be good for all of the things my S95 is good for…and do them a little better across the board.  The frame rate is faster, it seems to focus more rapidly (still slow compared to a dSLR), but in particular the dramatic improvement in ISO noise means not only better low light performance, but also higher possible shutter speeds in brighter conditions.

Happy to address comments and/or answer questions...

9
EOS Bodies / Feedback on 1D X from 1-series users?
« on: October 23, 2011, 01:07:23 PM »
So far, we've heard a lot of feedback, mainly complaints, from people who are not currently using 1-series bodies, and don't seriously plan to get one.  Sort of like people who say, "I was going to buy a Ferrari California, but now I'm not since they didn't put a V12 in it," and then just keep on driving their Toyota Camry, or at the most take out a 5-year loan on a newer model of the same car.

I bet many of those individuals were hoping, secretly or openly, for a camera with everything (FF, ultrahigh MP, superfast fps, excellent AF, top build) costing only slightly more than the 5DII.  Or they were hoping for features in the 1-series that would obviously trickle down into lesser bodies. 

But, with a few exceptions, we haven't seen much from current 1-series users.  I would think those are the people to whom Canon listened when designing the 1D X.  One important factor - many of them, especially 1D IV users, can add a 1D X and keep their current 1D IV for those times when they'll be limited by focal length and need the 1.3x crop and/or the ability to AF af f/8 (with one point, meaning static subjects only).

So, if you currently own/use a 1-series body, what do you think of the 1D X, and will you be getting one? 

10
Lens Gallery / Canon EF 85mm f/1.2L II USM
« on: April 18, 2011, 01:49:01 PM »
Post your pictures taken with Canon's quintessential portrait lens!

Some examples to start the thread:


EOS 7D, EF 85mm f/1.2L II USM, 1/1250 s, f/1.4, ISO 100


EOS 7D, EF 85mm f/1.2L II USM, 1/1250 s, f/1.6, ISO 100


EOS 5D Mark II, EF 85mm f/1.2L II USM @ 1/60 s, f/1.8, ISO 400

Of course, it can be used for things other than portraits, too...


EOS 7D, EF 85mm f/1.2L II USM, 1/6400 s, f/1.2, ISO 100

11
Lens Gallery / Canon EF 35mm f/1.4L USM
« on: April 10, 2011, 02:52:23 PM »
Post your pics taken with this wonderful, fast, wide-angle prime. 

Useful for environmental portraits, I find that the wide angle and fast aperture combined with the very usable ISO 3200 on the 5DII, the 35L makes an excellent nightime walkaround lens.

Here are a few of mine to start the thread off:


EOS 5D Mark II, EF 35mm f/1.4L USM, 2.5 s, f/5.6, ISO 100


EOS 5D Mark II, EF 35mm f/1.4L USM, 1/30 s, f/1.4, ISO 100


EOS 5D Mark II, EF 35mm f/1.4L USM, 1/20 s, f/5, ISO 3200


EOS 5D Mark II, EF 35mm f/1.4L USM, 1/250 s, f/2.5, ISO 1600


EOS 5D Mark II, EF 35mm f/1.4L USM, 1/50 s, f/2, ISO 200

Thanks for looking!

12
Lens Gallery / Canon EF 70-200mm f/2.8L IS II USM
« on: April 06, 2011, 03:26:35 PM »
I started out using this lens on my 7D, where to be honest, I found the focal length to be a bit 'awkward' - often too long for indoor use (where the f/2.8 is useful), often too short for birds/wildlife.  I found it most useful for outdoor event shooting.  However, once I added a 5DII to my kit, the 70-200mm focal length became a lot more useful, and the f/2.8, excellent IS system (the first shot below was a 0.5 s exposure taken handheld!), and ISO capabilities of the 5DII make it an extremely versatile lens.

Here are a few shots to start off the thread, the first few from various locations in China, and then a few 'local' shots:


EOS 5D Mark II, EF 70-200mm f/2.8L IS II USM @ 95mm, 1/2 s, f/5.6, ISO 100


EOS 5D Mark II, EF 70-200mm f/2.8L IS II USM @ 190mm, 1/200 s, f/25, ISO 250


EOS 5D Mark II, EF 70-200mm f/2.8L IS II USM @ 70mm, 1/400 s, f/2.8, ISO 100


EOS 5D Mark II, EF 70-200mm f/2.8L IS II USM @ 200mm, 1/200 s, f/5.6, ISO 100


EOS 7D, EF 70-200mm f/2.8L II IS USM + EF 1.4x II Extender @ 280mm, 1/2000 s, f/6.3, ISO 3200


EOS 5D Mark II, EF 70-200mm f/2.8L IS II USM @ 70mm, 1/640 s, f/2.8, ISO 100


EOS 7D, EF 70-200mm f/2.8L II IS USM @ 200mm, 1/250 s, f/2.8, ISO 200

13
Lens Gallery / Canon TS-E 24mm f/3.5L II
« on: April 04, 2011, 08:39:10 AM »
Seeing as there isn't yet a thread for this amazing lens, I thought I'd start one off with a few pics:


EOS 5D Mark II, TS-E 24mm f/3.5L II, 1/2 s, f/8, ISO 100, +12 shift


EOS 5D Mark II, TS-E 24mm f/3.5L II, 1/20 s, f/18, ISO 100, +12 shift


EOS 5D Mark II, TS-E 24mm f/3.5L II, 6 s, f/8, ISO 100, +6 shift

14
Macro / The interverse abhors an emtpy forum thread...
« on: November 29, 2010, 02:24:29 PM »
So, here's a macro shot of a daylily stigma to kick this one off:


EOS 5D Mark II, MP-E 65mm f/2.8 1-5x Macro @ 4x, 0.8 s, f/10, ISO 200

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