September 18, 2014, 10:19:04 PM

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Messages - neuroanatomist

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1
I compared the 100-400 -/+ 1.4xII on my 7D, IQ wasn't significantly different from cropping.  But...the 400/5.6 takes a TC better, and the 7DII will AF.

As for what to expect, the AF with the TC will be 50% slower.  Also, I'd expect a some hunting with a busy background, e.g. bird in a thicket, based on my experience with the 1D X with the 2xIII behind the 600/4L IS II.

I'd encourage you to get it.  :)

2
The idea is that E-TTL flash metering tries to 'correctly' expose the subject (determined by the pre-flash), while your camera's meter (in evaluative metering) is trying to correctly expose for the ambient/background.   

3
Lenses / Re: What do you use your wide angle lens for?
« on: Today at 08:48:33 PM »
I recently sold my 16-35/2.8L II, since for my general shooting 24mm is wide enough.  Where I need the UWA is mainly architecture, I considered the 16-35/4L IS for increased sharpness over the f/2.8, but decided on the TS-E 17mm (I already have the TS-E 24 II). 

If you need to use a UWA for groups of people, distortion can be a problem.  I'd recommend looking into DxO's software which corrects for volume anamorphosis.

4
EOS Bodies / Re: 6D and 7D II Combo or 5D III?
« on: Today at 07:50:25 PM »
I had the 7D and the 5DII, it was a great combo.  I replaced them both with the 1D X, and have no regrets.  If the 1D X had been out of my budget, I'm sure I'd have been happy with the 5DIII.   It's an excellent all-around camera. 

The combo of 7DII and 6D can work well, if you're either prepared to always carry both or accept compromise if you take only the body best suited to what you plan to shoot, and a different opportunity arises. 

5
Reviews / Re: Tony Northrup - D810 vs. 5D Mk3
« on: Today at 07:15:45 PM »
Double your resolution from 20mp to 40mp, you could downsample the 40mp image to the 20mp sizes, and have considerably better data that looks sharper, crisper, clearer without any additional sharpening.

What happens when you downsample both to 2 MP for web display, or make an 8x10" print?  Do you stand by your earlier claim that a 36 MP image would yield a "naturally crisper, sharper" result than an 18-24 MP image? 


At some point in the future, you guys are going to be the new generation of "film forever" guys.

No, we're just honest about the relevance and impact of the comparatively minor technological differences of which you're apparently so enamored.

6
And in certain parts of the world, practices like this is illegal. For instance, in Norway you must be able to document that the "before price" was an actual going price prior to the campaign.

Interesting.  The 'going price' on Canon lenses is lower than MSRP, but during Canon rebates they enforce MAP, meaning the price goes up then is rebated (and sometimes the price after rebate is higher than the going rate before the rebate!).

7
Reviews / Re: Tony Northrup - D810 vs. 5D Mk3
« on: Today at 02:33:27 PM »
"Large difference in detail" #1

http://s11.postimg.org/kyh7iwp8j/5d3_d810_1.jpg

"Large difference in detail" #2

http://s16.postimg.org/i7ha1whwl/5d3_d810_2.jpg

"Large difference in detail" #2

http://s24.postimg.org/swj8ybket/5d3_d810_3.jpg

All images: left 5D mark III, right Nikon D810, DPReview studio scene RAW files at ISO 100 / NR0 converted using ACR standard settings. 5D3 file was resized to match (Bicubic Sharper) and then had light sharpening applied. I encourage everyone to download test files such as these and try them for yourself.

I don't really see significant differences.  Since 36 MP >> 22 MP, I must conclude that your test is flawed. 

 :P :P  Phhhtththhhththththt   :P :P

</sardonic trolling>

9
Reviews / Re: Tony Northrup - D810 vs. 5D Mk3
« on: Today at 01:05:03 PM »
The D800 resolves quite a lot more detail than the 5D III. That either translates into the ability to enlarge more with the same level of detail as smaller enlargements with the 5D III, or it translates into naturally crisper, sharper images when downsampling for smaller prints or online publication.

Are you saying that the 'naturally crisper, sharper images' from the 36 MP D8x0 can be readily and easily distinguished from images taken with a 24, 22, 20, or 18 MP FF sensor when downsampled for small prints or web-sized images? 

Northrup said the 5DIII was ok for Facebook, but you're saying the D810 would be better for Facebook?

10
It's not always best to argue on principles.  Sometimes you have to argue on reality.  Yes, you do have to pay for an accessory, however, that accessory is very cheap (no offense if you have a low paying job).  To many of us, especially those of us who are successful and run businesses, time is money.  I don't get to go shooting whenever I want.  I have opportunities, and they come and go.  I'd rather spend a bit of money, and keep the lens at home, than send it in to get an update and wait a week or several weeks.

Furthermore, each time you ship something, you take a risk of it being misplaced, stolen, lost, or damaged.  While you may get compensated for such an occurrence, it's just another added headache.  Another added reason why being able to plop your lens onto a dock and update the firmware in a couple of minutes, even if it does cost ~$50, is so convenient.

As one who runs a successful business, which MkII super telephoto lens(es) do you own?  (No offense if your business isn't successful enough for you to afford one.)  Were they affected, and if so what was the turnaround time for Canon to update the firmware? 

As I stated, my 600/4L IS II came with the updated firmware; I ordered the lens soon after its release, before the original advisory, but I received it after the advisory was issued.  Given the timing, I expect there weren't too many affected lenses, especially the 500/600 II since they lagged and initial availability was limited.

To date, Canon has issued only 5 lens firmware updates.  Four of them are covered by this advisory, the other I referred to above, which was available for download and application via camera body. 

Many people choose Sigma lenses as a more economical option, particularly since the supertele lenses and many other high-end OEM lenses are so expensive.  Since 3rd parties have to reverse engineer Canon's communication/AF/etc. protocols, changes implemented by Canon can (and have in the past on many occasions) affect compatibility with 3rd party lenses.  It's good that Sigma offers the dock, to allow users to correct those problems.  Of course, users with Sigma lenses that fail to maintain compatibility with a new Canon body or firmware update can look forward to weeks or possibly months for Sigma to release a fix that can be applied via that inexpensive dock, but I'm sure you've considered the effect that might have on productivity.

11
This advisory makes Sigma's USB dock look that much better,

Why is it better to pay for an accessory, when Canon has included the ability to update lens firmware directly into all recent bodies?  That's how I updated the firmware on my EF 40mm f/2.8 STM. 

Granted, if you need your supertele firmware updated (happily, mine came with the updated version), you need to send your lens to Canon...but that's their business decision (and they pay shipping), not because it's not possible for customers to update lens firmware.

Also, this advisory is over two years old.  This 'update' doesn't change anything.  All they updated was the way they stated the affected serial numbers from 'xx0xxxxxx' to specify the first two digits, most likely to avoid confusion because they've now made enough copies of at least one affected lens that the second digit incremented up.

12
EOS Bodies / Re: High ISO Samples from the Canon EOS 7D Mark II
« on: September 17, 2014, 10:13:34 PM »
2. Per specs at canon.ca the actual number of focus points and their type will depend on the lens used. No examples listed. No idea what kind of a real world effect this will have.

Look at the 1D X or 5DIII for a rough idea.  There'll be a group A with f/2.8 and faster lenses except the f/2.8 macros, that do 65 cross with center dual cross.  A group B with lenses slower than f/2.8 but at least f/5.6 that lose the center dual cross.  Since all 65 pts are f/5.6 crosses (unlike the 1D X/5DIII which has f/4 crosses), the majority of lenses will be A or B.  Then will come several groups with a few lenses each, old (film days) variable zooms with f/5.6 at the long end, and a few lenses like the 180L Macro, each group having a column or two from the edges acting as lines instead of crosses. The last group will be the f/8 lens+TC combos with the center point plus four expansion points.

Thanks. I sort of envisioned the 65 points turning in the 9 I have now. Would this explain the push to bundle it with the 24-70 F4 L. Trying, with the addition of an 'L' lens, to show the camera at its best vs the package with the STM lens.

Rod

No need to worry - most lenses will give you 65 cross points.  But...it wouldn't surprise me if some of the current EF-S f/3.5-5.6 kit zooms have a column or two at the sides revert to lines instead of crosses, due to vignetting (you won't see that issue with EF lenses).

13
EOS Bodies / Re: High ISO Samples from the Canon EOS 7D Mark II
« on: September 17, 2014, 08:14:22 PM »
2. Per specs at canon.ca the actual number of focus points and their type will depend on the lens used. No examples listed. No idea what kind of a real world effect this will have.

Look at the 1D X or 5DIII for a rough idea.  There'll be a group A with f/2.8 and faster lenses except the f/2.8 macros, that do 65 cross with center dual cross.  A group B with lenses slower than f/2.8 but at least f/5.6 that lose the center dual cross.  Since all 65 pts are f/5.6 crosses (unlike the 1D X/5DIII which has f/4 crosses), the majority of lenses will be A or B.  Then will come several groups with a few lenses each, old (film days) variable zooms with f/5.6 at the long end, and a few lenses like the 180L Macro, each group having a column or two from the edges acting as lines instead of crosses. The last group will be the f/8 lens+TC combos with the center point plus four expansion points.

14
I know I'm in the minority, but I sure hope the 100-400 replacement is a push-pull zoom.

At least two of us in that minority...

15
EOS Bodies / Re: Official: Canon EOS 7D Mark II
« on: September 17, 2014, 01:28:00 PM »
Just a quick question. Nobody has mentioned anything about micro adjustment on the MkII, any idea?

Mentioned it in my previous (last 2) posts.

DPR references AFMA in their preview, ...yes, the 7DII has it.

I can not find the review I saw it on but supposedly it will be on the long and short ends for zooms.

Correct.

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