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 on: November 26, 2014, 08:13:00 AM 
Started by bmpress - Last post by KeithB
Nice, I will probably go for the 150-600!

 on: November 26, 2014, 08:04:00 AM 
Started by bmpress - Last post by bmpress
I have attached an image taken with 5D III and the 150-600. The cropped and edited raw image has been converted to jpg.
I used the camera by leaning on a post rail. The settings were 483mm, iso 1250 f6.3 and 1/640 sec. It was a gray day with not much light. And the cropped image is about ten percent of the whole file. See what you think. I was impressed with the quality and am keeping this lens. I also found the focusing to be fast and accurate and very good for flying birds.

 on: November 25, 2014, 11:19:44 PM 
Started by marcfs - Last post by Bob Atkins
Thanks for the report Marc. I still haven't gotten my hands on one myself, but I'm hoping to soon!

 on: November 25, 2014, 11:18:41 PM 
Started by bmpress - Last post by Bob Atkins
Sorry I'm a bit late in replying.

First I have no idea why anyone would suggest that format affects (center) sharpness, other than FF always (assuming comparable pixel counts) gives better results than APS-C because the image has to be enlarged less. A pixel is a pixel (all else being equal) so the APS-C image should be at least as sharp as a FF cropped to APS-C size (probably sharper because of higher pixel density)

I'd certainly take the Tamron 150-600 over the Sigma 150-500 simply because of the extra focal length (and the fact that the Tamron I tested was sharp). Of course Sigma now have two 150-600 lenses, the "S" at around $2000 and the lower spec'd "C" (no price or availability yet). I've yet to try them (maybe early in the New Year?). However I suspect the Tamron will still be the least expensive. The Tamron 150-600 is about $200 more than the Sigma 150-500, but I think it's worth the extra $200 for the extra 20% in focal length.

I did just look at the Sigma 150-500 and found it too was pretty sharp, though it did soften a bit wide open at 500mm. Certainly not a bad lens, but the extra 100mm of a 600 can be very useful.

See Tamron 150-600 at Adorama

 on: November 23, 2014, 11:46:33 PM 
Started by marcfs - Last post by marcfs
Hi Bob,

I used my 7D Mark II yesterday to capture images of birds and also took a few landscape shots.   I was able to capture a variety of water birds, a great blue heron, a great egret and a second or third year bald eagle, as well as an assortment of birds in flight.  I shot with two lenses:   the Canon EF 400mm f/5.6L USM Lens and the Canon EF 500mm f/4L IS USM Lens. 

I am very pleased with the results from using the new camera.  Images were pleasing, contained lots of details, and noise was very acceptable relative to my 5D Mark III.  I used my car as a blind and shot the images from the driver side window, using a bean bag to stabilize the camera and lens.  The sky was overcast and I was shooting during the latter part of the day.  I also used my 5D Mark III with the Canon EF 24-105mm f/4L IS USM Lens for capturing some landscape images and a weak sunset.

•   Focusing was quick and accurate
•   Auto ISO was effective and offered a benefit I had not used in previous cameras – through lots of customization
•   AF options were easy and convenient to access, although I want to read the EOS 7D Mark II AF-Setting Guidebook
•   10 fps was a real plus; however I worked at managing my images so I would not be overwhelmed when I downloaded to the computer
•    I liked the capability of customizing the camera settings to shoot fewer fps too.  However the 10 fps came in handy when  ducks were catching/eating fish and when they were rising up and flapping their wings

Overall I am delighted with the camera.  It was a joy to use.   I had to invest a fair amount of time to understand and set-up the 7D, although owning a 5D Mark III made this somewhat easier because there are lots of similarities between the two cameras.  As I gain more experience with the 7D Mark II, and read/understand more of the camera’s capabilities and customizations I will be making adjustments to its settings.

Marc Schoenholz

 on: November 22, 2014, 09:30:22 PM 
Started by marcfs - Last post by marcfs
Hi Bob,

I received my 7D Mark II this week and had time today to set it up today.  I’m planning to shoot with it tomorrow.

There are a series of 7D videos by Rudy Winston, Canon Digital Learning Center Technical Adviser, at

The video topics are as follows:

•   Taking advantage of the Broad AF Coverage in the EOS 7D Mark II
•   Utilize the intelligent viewfinder functions
•   Controlling AI Servo AF to track your moving subjects
•   Using the new Full HD video features in real life situations
•   Controlling the look of your images with exposure control functions
•   Fine tuning custom controls

Rudy’s video’s bring the 7D Mark II capabilities to life!!

IMHO the capabilities/technical advances in this camera are pretty incredible, especially at its price.
The JPEG and raw images shared by many professionals on the internet have been impressive.
From all of this information it seems to me that the 7D Mark II is a real game changer.

My plan is to use it in Bird Photography and as a backup for my 5D Mark III.


 on: November 11, 2014, 07:43:42 PM 
Started by marcfs - Last post by mjperini
There is a very positive, (but very technical) review of the 7D mk II and comparison to the Original 7D,
I'm not certain I got it all, but it's worth a look.  I'd be interested in Bob's coments ( if you have any interest in interpreting it for us)
He anticipates it being a great AstroPhotography camera as well.

 on: November 11, 2014, 12:27:44 PM 
Started by bmpress - Last post by KeithB
Any more thoughts on the 150-600, Bob? I just had my Sigma 100 - 500 stolen and I might be in the market for a new super telephoto. I *think* I had some focus issues with the Sigma, but it is hard to tell somethimes.

So, which would you choose, Bob, the Sigma or the Tamron?

DPReview reports that it is really sharp with a full frame camera, but not so sharp with an APS-C, any thoughts on why this should be?

 on: November 04, 2014, 12:18:29 PM 
Started by Fotobuff - Last post by Bob Atkins
The 70D is absolutely fine with any EF or EF-S mount lens and there will be zero drop in image quality. Canon lenses are not optimized for any particular camera body and work equally well with all. The 70D image quality will be higher than your 600D.

I have a 70D and use it will all my canon lenses from 500mm to 24mm primes and a whole bunch of zooms.

I got mine from ADORAMA. Right now they have a special which includes the 70D body, a 32GB class 10 Sd card, a 3 year extended warranty and a LowePro shoulder bag for $999. The 70D alone is also $999, so make sure you get the kit. Shipping is free. Given that a used 70D is $899, a new one for $999 (Canon currently habe a $200 instant rebate on it) is a good deal and the extra items make it even better.

You can use this link to get to the kit: Canon EOS 70D kit

I really like the 70D. Since I got mine it's become my camera of choice, even over my 7D most of the time.

 on: November 04, 2014, 08:17:13 AM 
Started by Fotobuff - Last post by Fotobuff
I am using a Canon EOS 600D DSLR camera for the last two years and would now like to get the newer model EOS 70D. This is also a DSLR with an APS-C sensor. I would like to know whether it would work optimally with my old EF and EF-S lenses. Theoretically, there should not be a problem but in practice, can there be a drop in image quality ?  Huh

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