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Messages - Canon Rumors

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1396
From Best Buy
We have received various reports from people saying they have purchased the new Canon Rebel T4i w/18-135 STM kits from their local Best Buy stores in the United States. A quick check of store stock in a few areas of the United States showed the kit in stock. Currently web shipping isn’t available.

All of this is good news, unless you ordered from Amazon. I have received a bunch of forwarded emails from people that had their preorder of this kit cancelled by Amazon.

cr


1397
New lens patents
A new patent showing two lenses, the 135 f/2.8 and 180 f/3.5 has appeared. The interesting part of these patents is something called a apodization filter on the lenses. This improves the bokeh performance of the lenses.

EF 135 f/2.8

Could either of these lens patents translate into a new 135 f/2L or 180 f/3.5L Macro? Only time will tell.

Read more after the break…

Patent Publication No. 2012-128151

  • 2012.7.5 Release Date
  • 2010.12.15 filing date

Example 1

  • 137.2mm – f = 135.0 focal length
  • Fno 2.83 -. 3.90
  • 9.1 deg half each painting.
  • Image height 21.60mm
  • 186.7mm – 150.0 full-length lens
  • BF 47.4 – 80.7mm
  • Lens Construction 10 elements in 7 groups sheet
  • 1 UD glass sheet
  • 0.25 times the maximum magnification ratio

Example 6

  • 179.1mm – f = 180.0 focal length
  • Fno 3.50 -. 4.00
  • 6.9 deg half each painting.
  • Image height 21.60mm
  • 218.0mm – 199.8 full-length lens
  • BF 70.0 – 89.8mm
  • Lens Construction 11 elements in 7 groups sheet
  • 1 UD glass sheet
  • 0.11 times the maximum magnification ratio

Appearance of (Bokeh) is important out of focus

Apodization filter

  • The periphery of the filter transmittance is reduced
  • Added to the luminous flux intensity distribution
  • Bokeh is beautiful and the outline of the

Apodization element variable

  • If the liquid of same refractive index as the shape of the interface, no variation occurs in aberration
  • To be the same refractive power of the two liquids, the Abbe number is difficult

Canon ‘s patented

  • Variable element shape
  • Voltage is applied, changing the shape of the interface
  • Obtain the effect of apodization
  • Varying refractive power, the Abbe number
  • To reduce the time variable aberrations of shape
  • By a twist of the material performed, to optimize the absorption coefficient, to suppress the generation of aberration to moderate the curvature of the interface
  • To reverse the two materials (such as liquid), the amount of chromatic aberration, do the negation
  • Suppress the two materials (such as liquid), refractive index, the difference between the Abbe number
  • The entire feeding (with floating)
Source: [EG]
cr


1398
EOS Bodies / AF Point Color on the 5D Mark III & 1D X Update [CR2]
« on: July 13, 2012, 05:09:28 PM »
User preference known by Canon
I have been talking to various professionals about what they think about the black AF points on Canon’s new 61 point AF system. I have yet to find one that doesn’t have at least one issue with it.

A lot of people are finding it hard and/or impossible to see which AF point is selected when shooting in dark conditions, like a wedding reception. There are also people telling me they’re having trouble tracking birds in flight with the 1D X and the black AF points.

Solution
I have been told that Canon is aware users aren’t particularly happy with the way the AF points are displayed to the shooter. I’m told there is a “solution coming” that “may not be ideal for everyone”. There is no timetable for any firmware update as of yet.

Most users want the AF system to operate like the previous 1D camera did, always lit red when AF is engaged.

I’m posting this to lend my vote to the growing number of people that want some kind of fix. I had trouble last weekend with the 1D X and tracking birds myself.

More to come.

cr


1399
Pricewatch Deals / Canon EOS-1D X Battery in Stock at Normans
« on: July 13, 2012, 04:55:00 PM »

From Norman Camera

Norman camera has lots of stock of the new LP-E4N battery for the Canon EOS-1D X.


Buy the LP-E4N at Norman Camera for $169 


cr



1400
EOS Bodies / Patents - EF 600 f/5.6 DO & 800 f/5.6 DO
« on: July 12, 2012, 11:21:28 AM »
More diffractive optics
Canon seems to still invest significant money into developing their diffractive optics technology. Currently Canon has 2 DO lenses, the very good 400 f/4 DO IS and the decent 70-300 DO IS.

EF 600mm f/5.6 DO

Making long lenses that are smaller and lighter will always be desired, especially with the boom in digital cinema cameras and wildlife photography.

More patents have appeared, one for a 600 f/5.6 DO  and another for an 800 f/5.6 DO. The 800 would measure a miniscule 46cm in length.

EF 800mm f/5.6 DO

Chances of coming to market? I think it’s a pretty solid bet we’re going to see new DO lenses announced sometime. When? Your guess is as good as mine.

Source: [EG]

cr


1401
EOS Bodies / Mirrorless Update - APS-C? [CR2]
« on: July 12, 2012, 11:10:33 AM »
Going bigger?
We’ve mentioned in teh past that the upcoming mirrorless camera from Canon would have the G1 X sensor. While an apparent prototype exists using the sensor, the coming camera is apparently an APS-C sized sensor based around the 18mp sensor in the Rebel T4i (Hopefully the rubber grip isnt the same).

The camera will also feature an articulating touchscreen, and maybe larger than some people are anticipating.

More to come I’m sure. An announcement is expected on July 23, 2012.

Seems [NL] is hearing similar things.

cr


1402

From DigitalREV

DigitalREV appears to be the first retailer with stock of the new Canon EOS Rebel 650D/T4i w/18-135 IS STM kit. Pricing on the kit will differ depending on where you are located. DigitalREV ships world wide in your native currency in most cases.


Canon EOS Rebel T4i w/18-135 IS STM Kit at DigitalREV


cr



1403
EOS Bodies / New Product Announcement Invites for July 23, 2012
« on: July 10, 2012, 08:05:58 AM »
From the Czech Republic
Invites for the July 23, 2012 product announcement date seem to be making their way around to folks.

It’s suspected this is when we will see the announcement of Canon’s first mirrorless interchangeable lens camera. We may finally get the official announcement for the EF 200-400 f/4L IS 1.4x lens as well.

cr


1404
Pricewatch Deals / 5D Mark II Body Price Drop at B&H
« on: July 09, 2012, 04:44:17 PM »

Price Drop!

The still popular 5D Mark II has been priced dropped at B&H. It’s gone from $2199 to $2079.


5D Mark II Body at B&H for $2079 


cr



1405
Lenses / Patent - Canon EF 24-70 f/2.8L IS
« on: July 08, 2012, 05:48:06 PM »
You want IS?
A patent for an EF 24-70 f/2.8L IS has surfaced finally, this has been a lens that has been talked about and desired for a long time.

We mentioned some time back that there were 5 or 6 version of the new 24-70, and one of them had IS. Canon decided against an IS version for reasons to do with weight, size and cost from what I’m told.

Sadly for the ones that want an IS version of this lens, I have little faith that such a lens will be coming any time soon. Patents can sometimes appear after a product has been announced, and that’s probably what has happened here.

Canon EF 24-70 f/2.8L IS

Patent Publication No. 2012-123156

  • 2012.6.28 Release Date
  • 2010.12.8 filing date

Example 1

  • Zoom ratio 2.46
  • 68.99mm – f = 28.00 focal length
  • Fno. 2.88
  • 17.41 deg – 37.69 half angle of view.
  • Image height 21.64mm
  • 222.38mm – 192.25 full-length lens
  • BF 39.98 – 53.68
  • Effective diameter 74.47mm ball before
  • Effective diameter aperture 31.23mm
  • 19 sheets 12 group lens configuration
  • Three three aspherical surface
  • 2 UD glass sheet

Example 2

  • Zoom ratio 2.86
  • 68.70 – f = 24.00 focal length
  • Fno. 2.88
  • 17.48 deg – 42.03 half angle of view.
  • Image height 21.64mm
  • 224.86mm – 191.93 full-length lens
  • BF 39.85 – 55.68mm
  • Effective diameter 77.29mm ball before
  • Effective diameter aperture 32.58mm
  • Lens Construction 12 group 21 sheets
  • Three three aspherical surface
  • 2 UD glass sheet
  • Five-group zoom positive and negative positive positive and negative
  • (For Focusing group 2) Inner Focus
  • (Part 1 of the fourth lens group, anti-vibration unit is L4a) image stabilization
Source: [EG]

cr


1406
EOS Bodies - For Stills / Canon Rebel T4i/650D Tear Down
« on: July 07, 2012, 09:34:26 AM »
A look inside the Rebel T4i
The folks at Chipworks have torn apart a Canon EOS Rebel T4i/650D to take a look inside. There’s some good explanation about phase detection autofocus as well as a list of the manufacturers used inside the camera.

About Phase Detection Autofocus

Phase detection is where there are pairs of sensors that are blocked left and right (or top and bottom) and from the differences, the camera has the information needed to bring the image into focus. Please remember that teardown articles are generally focused on preliminary analysis because that is all we have at the time of publication (our Technology Blog focuses more on hard facts about the chips). With that in mind, we can see that unlike the Aptina sensor Canon is using a somewhat irregular pixel pattern for phase detection versus Aptina that used a set of regular lines. Our full report will include key information like SEM and bevel analysis to show the implementation in more detail and at higher magnification.

Read the entire article

cr


1407
Lenses / A New EF 50 f/1.8 IS? [CR1]
« on: July 07, 2012, 09:09:49 AM »
A new 50?
A purported replacement to the EF 50 f/1.4 was mentioned today in the form of an EF 50 f/1.8 IS. The lens would be smaller than the current 50 f/1.4. There is no imminent announcement of such a lens, but Canon is working to replace the 50 f/1.4 sometime in the next year. The current 50 f/1.8 would remain in the lineup.

CR’s Take
There’s no doubt in my mind Canon is working on a couple of new 50mm lenses. With IS added to the new 24 & 28mm primes, IS in a 50 shouldn’t surprise anyone. It would be a welcomed lens if they can make it small enough to work well on a mirrorless platform.

Take this one with a grain of salt….

cr


1408
EOS Bodies / Issues with Stock of the EF-S 18-135 IS STM?
« on: July 07, 2012, 09:00:30 AM »
EF-S 18-135 IS STM Delay?
We’ve received a couple of reports from readers that their orders for the Rebel T4i w/18-135 IS STM kit have been cancelled without much reason given. One of the retailers cancelling the preorder was Amazon.

We’re waiting to hear some clarification on the matter. If your order has been cancelled, please let us know.

cr


1409
EOS Bodies - For Stills / Canon EOS Rebel T4i/650D Service Advisory
« on: July 05, 2012, 10:26:29 PM »
Here we go again…
Thank you for using Canon products.

The front rubber grips of some units of the Canon EOS REBEL T4i Digital SLR camera (EOS 650D/EOS Kiss X6i overseas models) may change color (turn white) after a short period of time. Customer support for this phenomenon is described below.

Canon continuously strives to provide our customers with high quality, reliable products that can be used with confidence. We offer our sincerest apologies to any customers who may be inconvenienced.

Phenomenon
The front rubber grips of some EOS REBEL T4i units produced in certain lots during the sixteen-day period between May 31st through June 15th, 2012 may turn white after a short period of time. We have determined after inquiry with the rubber manufacturer and analysis, that the substance zinc bis (N,N’-dimethyldithiocarbamate) is what causes the rubber surface to turn white.

Zinc bis is not used in the production of this product. However, the quantity of rubber accelerator used in the affected production lots was slightly higher than usual. As a result the rubber grips may turn white due to a chemical reaction with the rubber accelerator and other substances. High temperature and high humidity may contribute to this condition. Zinc bis (N,N’-dimethyldithiocarbamate), which becomes deposited on the rubber surface, is created as a result of this chemical reaction.

Affected Product
Some EOS Rebel T4i digital SLR cameras produced from May 31 through June 15 may be affected.

You can use the serial number to check whether your camera is affected by this phenomenon. If the sixth digit of the serial number is “1″ please follow the procedure below. If the sixth digit of the serial number is “2″ or higher, your camera is not affected.

Procedure:
1) Click on the link below to enter your serial number.

2) Enter the 12-digit serial number (reference the image below) from your camera then click the Submit button

3) One of the following messages will appear.

· “Your camera is NOT affected” ? No further action is required

· “Your camera is affected” ? Please see the Support section below

Click here to enter your serial number (hint: read this instruction before opening that page)

Caution on Use
The amount of zinc bis (N,N’-dimethyldithiocarbamate) detected during our testing was minimal. While Canon has not received any reports of injury or allergic reactions, depending on one’s health and physical condition, in rare cases when this substance comes into contact with skin, allergic skin reactions* may develop. In addition, if eyes are rubbed after contact with the substance, symptoms, such as red eyes, may develop.

As a precautionary measure, thoroughly wash your hands with water if they have come in contact with the rubber grips that have turned white. (If any medical symptoms develop, please consult your physician immediately.)

*Please note that the occurrence of allergic skin reactions depend on the target substance, length of contact with the target substance, one’s health and physical conditions, and sensitivity of one’s skin structure, and not everyone will be affected by allergic symptoms.

Support
Preparations are underway to provide free repair service for affected cameras by replacement of the rubber grips. Once this repair service is available (ETA of mid July 2012), we will post an update on our web site and also notify registered users via email. Please register your EOS Rebel T4i, so that we can inform you via email when the free repair service will commence.

This information is for residents of the United States and Puerto Rico only. If you do not reside in the USA or Puerto Rico, please contact the Canon Customer Support Center in your region.

Thank you, Customer Support Operations

Canon U.S.A., Inc.


1410
Lenses / Canon EF 24-70 f/2.8L II Delayed Again
« on: July 05, 2012, 09:34:48 AM »
Not good news
Contrary to what I was told recently by a few retailers, Canon has delayed the release of the EF 24-70 f/2.8L II again. This time until mid September 2012. The reason for the delay is said to be for “final  adjustments in production”.

CR’s Take
This is tough news for a lot of people. I own a lens rental business and not being able to find more new 24-70′s in Canada to add to stock has caused a few moments of stress. We were really hoping for a smooth switchover from version 1 to version 2.

However, if this is for quality control reasons, then the delay is worth it. No matter how much it drives us bonkers.

cr


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