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Messages - Don Haines

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196
Landscape / Re: Please share your snow/ Ice Photos with us in CR.
« on: March 23, 2014, 06:00:56 PM »
wildlifeandmore, that's a very compelling image with the mountains.  Seeing it I just had to post all I could get today after 2 hours.  Now it did snow yesterday and went below 0 C but try as I might I can't produce proof that there is snow in this scene! ;)

6D 300 X2 640th F6.3 ISO 400  about half frame crop

Jack
Nice picture! I assume the snow was hiding behind the Bison...

I saw some Bison at my place yesterday..... but it was a slightly different scenario :)

197
Animal Kingdom / Re: Show your Bird Portraits
« on: March 23, 2014, 04:11:51 PM »
Bluejay digging through the fresh fallen snow to get at the food. Shot with a SX50 at 1200mm equivalent in the (GASP!) "green box" mode... :)

198
EOS Bodies / Re: Two Cinema EOS Cameras Coming for NAB? [CR1]
« on: March 22, 2014, 04:45:48 PM »
I was looking at the floor chart for NAB. The two biggest booths are Sony and Canon. Sony is in the largest booth, but the next two biggest are both Canon and looks like more total area. The Panasonic booth is about a quarter the size and the Nikon booth is half that again..... the GoPro booth is the same size as Nikon...

With all that space they must be up to something.....

199
Technical Support / Re: More reach
« on: March 22, 2014, 01:15:10 PM »
Hi dhr90.
Personally I had been fairly happy with my 150-500 on my 40D, since I have been pairing it with my 7D I have been rather dissapointed, I have yet to work out if this is operator error, a greater mismatch of AF recruiting AFMA which I have yet to complete, see other posts by me about this!

Cheers Graham.
The Sigma 150-500 (and the 120-400) are very soft lenses. You really notice this when you go from a FF camera (big pixels) to a crop camera (tiny pixels). The 40D has a pixel size close to a FF camera and when you go to a 7D you are now using pixels that are half as large. This has the effect of making the lens even softer.


200
Landscape / Re: jrista et al, Why Astrophotography?
« on: March 22, 2014, 01:07:18 PM »
I have always been fascinated with the night sky. When I go on canoe trips I try to find campsite where I can lie out and stare upwards...  I built a floating platform where I can lie down in the evenings at home and stare upwards.... For me, astrophotography is a natural extension of that fascination.

201
Landscape / Re: Please share your snow/ Ice Photos with us in CR.
« on: March 22, 2014, 12:43:08 PM »
Snow/Ice and Wildlife

Grand Teton National Park along Gros Venture Rd.
5DII
70-200 2.8L IS II
110mm
f/4
1/800
100 iso
Nice Picture....

202
Animal Kingdom / Re: Portrait of your "Best friend"
« on: March 22, 2014, 09:14:53 AM »
Alley Cat.... found as a kitten in an alley... and now enjoying a life of luxury.

203
Animal Kingdom / Re: Show your Bird Portraits
« on: March 22, 2014, 01:48:03 AM »
Peregrine Falcon

Very nice. I don't see them often.
still a little cold in your neck of the woods?
I saw this one in the middle of Ottawa... Thousands of commuters passed by without a clue they were there. ( it was a pair of Peregrines). The duck WAS a Mallard....

It was a warm day, got all the way to plus 2.... And it is now snowing, they say another 15 cm....

204
EOS Bodies / Re: Canon's Medium Format
« on: March 22, 2014, 01:42:54 AM »
An alternative from Canon, where they made a body with a 36x36 size sensor, would be interesting.

That would give a number of advantages:
- 50% area increase
- 27MP with the same pixle size as the 1DX sensor (or 54MP with the same pixle size as the a7r/800)
- All EF lenses would work

If I could get a 40MP-ish sensor, with proper high ISO performance, a fair fps and Canon user interface in a reasonably sized body ... It would put a abrupt stop to my Phase One ambitions ...

I know some will oppose a square image format, but that would be OK with me. Thoughts?

I don't see why that would be any better than just going up a centimeter in each dimension, and making a whole new line of lenses.  It's not as if many couldn't afford to buy new lenses.  And like I said, 10 years from now, it's quite possible they would be making super telephoto lenses to go along with the new mount and larger image circle.  Weight need not be an issue, the physical size of everything would not be much bigger.
Double the sensor and you cube the weight of the lens to get the same field of view.... That's twice as long, twice as high, twice as wide.... Eight times the weight...

These two lenses have the same field of view and F-stop. The small one is from an Olympus 4/3 system and the big one fits Canon FF....a lot of the width of the small one are the focus motors, just look at the lens caps to get an idea of the difference in the weight of the glass....

I, for one, will not be paying for a lens that dwarfs the Canon "big whites"

I agree, I wouldn't want to be using lenses that much larger than the Canon great whites. That said, if Canon ever did enter the medium format market, I suspect they would be serving the same customers as the current offerings in that market: Studio photographers, and possibly landscape and the rare wedding photographer. That's really what medium format services.

Those cameras usually don't even have frame rates much above 3fps, and nothing anywhere close to 10-12fps. Achieving that kind of readout rate would be rather difficult as well. Canon achieved it once with the 120mp APS-H, but as far as I know that was with a special test bench, not an actual camera with existing data storage devices.

If we figured on 4┬Ám pixels, a 44x33mm sensor (the "crop" sensor of the medium format world) would be 90mp. If we figured on a 54x40mm sensor (the size of an IQ180), that would be 135mp. If we also assume 16 bit data, rather than 14 bit, were talking a LOT of data to move around for each frame, 180 to 270 megabytes per raw image. You could get 0.9fps with a single DIGIC5+ (which has 250mbps throughput), and less than 2fps with dual DIGIC5+. You would need something like a DIGIC7+ with some 7x the performance of a single DIGIC5+ to get 5fps at those image sizes, and there is no question you would need MUCH faster memory cards to handle that kind of throughput for a useful continuous buffer depth. Even then, I still don't see such a camera being used for action photography...it would just be too big and unwieldy. Even if it was mirrorless, it's the body and lens size that really kills you at longer focal lengths.
As someone who has hauled around a 4x5 and sherpa'd a 8x10 and even used the kodak disc camera (the iPhone of the film world), I have always thought that 35mm was the sweet spot for ergonomics... Big enough for quality but small enough for portability. In the studio, portability isn't much of a concern so medium format was the hot technology.... And when doing landscapes or architectural nothing touched large format, particularly when you could tilt and angle both the film plane and lens plane to straighten out buildings or warp the focus plane... Sort of like a tilt/shift lens on steroids.....

There is definitely a place for everything, but going to a larger format really makes the size and cost of everything skyrocket... It isn't as simple (or inexpensive) as slapping in a bigger sensor. Your point about file sizes and read speeds hammers in the point.... EVERYTHING is affected.

205
Animal Kingdom / Re: Show your Bird Portraits
« on: March 21, 2014, 11:41:39 PM »
Peregrine Falcon

206
Animal Kingdom / Re: What is this bird?
« on: March 21, 2014, 11:18:11 PM »
Appears to be a red-tailed hawk (although I'm viewing this on my iPhone).

Thanks!
Looks like a red-tailed hawk to me too. They are fairly common in Eastern North America and they do eat squirrels.... I have one that hangs out at work and picks mice out of the fields.

207
Animal Kingdom / Re: Breakfast is Served
« on: March 21, 2014, 10:54:43 PM »
And on today's menu we are having a special on duck......

208
Animal Kingdom / Re: BIRD IN FLIGHT ONLY -- share your BIF photos here
« on: March 21, 2014, 10:52:27 PM »
Ducks taking flight

209
Animal Kingdom / Re: Your best animal shots!
« on: March 21, 2014, 12:38:47 PM »
We did get rather close to the Rhino. Canon 70-200f2.8mk11 with 5Dmk111.

I'd be using a 800F5.6 with a 2X teleconverter myself :)

Great shot, interesting textures....

210
Portrait / Re: Post photos of other photographers in action
« on: March 21, 2014, 11:44:32 AM »
I don't mean to post this image in a condescending way about people who use iPads/tablets as cameras ... I think its awesome that we live in an age where different people with different tools and budgets can get into photography the way they see fit ... its cool that people don't have to learn about camera controls, lighting etc to get some decent images that they will cherish ... like this man who was capturing his little daughter's excitement of having discovered a little dome under the stingray exhibit ... I think he was more excited about having captured this precious memory of his daughter then she was about discovering that little dome ... priceless!
I know some photographers scoff at the idea of others using an iPad as a camera, but I think its marvelous that people can capture a priceless memory in a manner that is convenient to them ... that man was using some app to capture the moment in burst mode and later on at the cafeteria I had seen him editing it in iPhoto. During my last vacation in December, I've seen several tourists using their iPads ... I say why not, more power to the people.
Sometimes it's the right tool for the job... sometimes the convenience outweighs other concerns, but under the right conditions they work surprisingly well.

The lady in the picture is a professional photographer, had a 5D2 and a 24-70 in the backpack, and was snapping away on the iPad :)

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