October 20, 2014, 06:32:28 AM

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Messages - wtlloyd

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EOS Bodies / Re: Multilayer Sensors are Coming From Canon [CR2]
« on: October 08, 2014, 11:45:48 PM »
Thanks! That's gonna be some good readin'!


Here is one of the layered sensor patents from a few years ago (2011):


This one seems to apply the nanocoating concept to the red layer. Nanocoating uses nanoscopic scale spikes of differing sizes on a reflective surface to produce a non-abrupt transition layer. Reflections occur at abrupt transistions in refractive index, so by creating a non-abrupt transition layer, you can nearly eliminate reflections entirely. This is different from standard multicoating, which still allows reflections to occur, it just cancels them out via wave interference.

Here is another patent from 2012:


This is another sensitivity increasing patent. This apparently uses dielectric antireflective layers underneath the preceeding layer to reduce ghosting reflections. Not sure if this is intended to be used in conjunction with the nanocoating of the red layer or not...it seems to explicitly call out the blue and green layers (which are higher up than the red layer).

Canon also has their more recent patent for the five-layer sensor with UV and IR layers:


This patent is interesting, because it seems to depict a multi-layered BSI design, at least based on the diagram of the sensor (all the transistors are on the back side...that alone would be HUGE for layered sensor sensitivity...if you look at the ChipWorks electron micrographs of current Foveon designs, the transistors take up a huge amount of die space, as Foveon is still an FSI design...which is probably the biggest reason that sensor suffers so in low light.)

It was discovered some time ago that infrared light diffuses and reflects back subcutaneously in human skin. It can be used to greatly reduce the appearance of skin blemishes (I found a page a while back that shows that most skin features effectively disappear when you shoot full infrared). I'm not sure what UV light does for skin...apparently Canon found something useful with UV light.

Anyway, wtlloyd, there's some reference material. :) That's what Canon's got for multi-layered sensors.

EOS Bodies / Re: Multilayer Sensors are Coming From Canon [CR2]
« on: October 08, 2014, 11:03:00 PM »
So, at first I'm thinkin', "Here we go, 100 pages, easy".

Then I see only 4 pages in 8 hours... ???

And I realized, what kinda rumor is that? Multilayer sensors, what does that even mean? Stupid rumor, let's get back to talking about DR and diffraction and AA filters, and all that good stuff we're so familiar with...

How are you supposed to argue, when you don't know what your're talking about?


Canon General / Re: seeimpossible.usa.canon.com?
« on: October 06, 2014, 01:09:52 PM »
12 pages? On this thing?

Jeez, Louise.

Suppose they gave a rumor, and nobody came?

FOR SALE Photo Equipment / Re: Flashes and PocketWizards
« on: October 05, 2014, 10:56:19 PM »
600ex-rt refurbished was on sale ...

Pretty sure this isn't meant to be a discussion forum.

This new forum hasn't yet established it's member etiquette, but I think most people readily can understand that "price policing" is rude. Very akin to making bad smells in an elevator, if you catch my drift... :o


Software & Accessories / Re: Need help putting together a ND Filter Kit
« on: October 04, 2014, 08:12:51 AM »
The Lee seven5 system is for compact cameras. If you have a DSLR, you want to buy into the 100mm system.
You need the Foundation kit and correctly sized lens mount rings. The mount rings come in a standard and wide angle (wide angle mount helps eliminate vignetting). You can buy filters in sets or individually. You could consider buying used, do a search at Fred Miranda buy/sell.
Lee has a great website, and extensive YouTube videos.


Software & Accessories / Re: Hello Windows 10
« on: October 03, 2014, 07:34:51 PM »
I've read the reason is that many 3rd party apps call "if win 9 (5 or 98) then...

Here, now that I'm off my phone -


yeah, it's reddit - you got a problem with that, buddy?

Canon General / Re: Financial Times - "Digital cameras: out of focus"
« on: October 03, 2014, 02:22:01 PM »
Man, you almost had it!

I think the whole point of Tucks article is that mirrorless is "too little, too late".

The vast hordes of photo takers are not interested in how to take pictures, it's what they can do with them that matters. And it's almost entirely for ephemeral use.

You know, the opposite of us "real" photographers ;)

Canon General / Re: Financial Times - "Digital cameras: out of focus"
« on: October 02, 2014, 08:35:38 PM »
Kirk Tuck:

"But what we're seeing in photography right now is not really the adoption of a new standard or product. People are not just moving from one type of camera to another they are moving to a new mental space about personal imaging and they have just done it en masse."


Go ahead and click the link. Pretty girls! I promise!

They will sell a few.
People who buy them will take a few snaps, but the real purpose is to use it as a fashion accessory.
After a week or two, it will get tossed into the wardrobe and forgotten, the expense being irrelevant.

EOS Bodies - For Stills / Re: Why haven't you left canon?
« on: September 26, 2014, 11:52:44 PM »
When I'm a better photographer than my equipment, I'll take a look around.
Until then, it's all measurbating.

Pricewatch Deals / Re: Deal: Has the EOS 6D Body Ever Been Cheaper?
« on: September 19, 2014, 09:49:30 AM »
High Five! So did I, just about $1300 with tax, free shipping.
Looked brand new, shutter count was 5, Canon Price Watch said they had 500 for sale at the time. Clearly not "refurbed".

I picked it up off the Canon refurb site for $1215 a while back during a 20% off sale.

Lenses / Re: Hands-on With the Canon EF 400 f/4 DO IS II
« on: September 17, 2014, 11:10:50 AM »
Just rotate it up, no big deal. I prefer it down, I don't want my hand on the focus ring when I'm using AF.
The foot in place is essential when using a beanbag, for the same reason.

Speedlites, Printers, Accessories / Re: CF Cards Vs SD Cards
« on: September 17, 2014, 10:43:59 AM »
Got any links to support this, or is this all just seat-of-the-pants common sense reasoning?

I've had two cameras with bent CF pins.  One was a used Minolta DSLR that I had bought (Just before Sony bought them).  I was able to straighten the bent pin out, and it was fine.

The other was a used Canon P&S that I bought for a dollar.  The charger, battery, and CF card were worth more than that.

Many SD card advocates are not aware that you must do a low level format on a previously filled SD card in order to get rated write speeds.  If you just do a regular quick in camera format, the write speed slows to a crawl.  If you do a low level format every time, then the card gets lots of write cycles, since a low level format writes a 0 to every memory cell.

With a AD card, its best to buy a big one, and do a low level format whenever you have saved enough files to reach the card capacity.

For example, you have a 64GB card.

You do 4 photo sessions using 16 GB and doing a regular format(does not erase the cells or data).  The card software tries to equalize card usage, so it tends to not over write cells with data in them until it has to.  Thus, by the 4th 16GB session, the entire card has been written to, and now data must be erased to save more.  This is very slow, so your right speed drops.  Time to do a low level format to get the speed you are paying for.

EOS Bodies / Re: High ISO Samples from the Canon EOS 7D Mark II
« on: September 16, 2014, 09:42:52 AM »
What is this wait you speak of?
7D2 is old news, we're on to 5D4 around here, bub.

Try to keep up, won't you?

EOS Bodies / Re: 7DII No Wifi
« on: September 15, 2014, 04:58:46 PM »
Camera battery is probably lacking the power to stream files continously, what would it take to enable that functionality?
Built-in WiFi in Canon 6D is slow and disconnects randomly, not super useful. Are Canon's external $800 accessories faster? One would hope so.
I've got a TP-Link MR3040, costs $40, I'm gonna compare that to the Canon 6D and see.....

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