Tonika 16-28 vs Canon 17-40 or Carl Zeiss 21mm f2.8 for canon 5d3

while i understand that there is more to something than set of numbers from a lone test. that is the empirical data that they use to test lenses, and they don't jive. you left out that TDP had to get his lens replaced due to it not operating properly, and that while i love ken, he is careful of exactly what words he uses. when he says it's the highest performing 21mm slr lens, he mean JUST that. not 24mm not 25mm, not 22. not zoom, not any other of thing. I don't disagree of it's performance. I've never used one, but clearly it's awesome. I'm just telling you what i've read and seen. does it not have complex distortion? bye the numbers at photo zone, isn't it beaten by the canon? Doesn't it have high corner shading? i think so.
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Samyang 24mm f/1.4 Review

risc32 said:
i'm not so sure i'm feeling that hyperfocal stuff. for my exp, focus does matter, even at 24mm. Does the samyang operate in 1/3 stops, 1/2? whole stops or some weird mix? very often setting my aperture precisely is of great importance, and i'm not talking about for DOF's sake. I for one don't care to screw around with anything but 1/3 stop increments everywhere. it's the only real complaint i have with my fuji MF rangefinder. 1/2 stop aperture, full stop shutter speed, what BS. then again running with no batteries and having as fast as 1/500th synch speed is sweet.

Not sure about the 24mm, but my 35mm Samyang has clicks at f/1.4, then f/2.0, then half-stops to f/11, and f/16.
I started out by pulling it apart and gouging a bit to get a click between f/1.4 and f/2.0, but then I gave up and removed the ball-bearing, so now it's clickless...

I know it's annoying having only 1/2-stop lenses and 1-stop shutter speeds, it's the same on my P6/K60 and lenses. But then, even on my 7D and EF-lenses the exposure's never 'exactly' right, pushing/pulling a digital file up to a stop doesn't ruin much (unless your highlights are blown, but that happens a lot more often in digital than film)
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National Parks besides Grand Canyon? - recommendations please

No problem, glad some of it helped! I've done a ton of research for that area over the past year, plus I travel a lot for work & pleasure, so I'm glad all that effort helps others too.

A friend and I will be in the Zion/Bryce area around 10/15-10/16, so maybe we'll spot you. At 6'4" you should stand out. ;)

BTW, emailed you again. I sent a PDF you may find useful. Just wanted to give you a head's up, it's not a virus or anything.
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Sigma 50-150 2.8 OS vs Canon 70-700 2.8 IS II for crop cameras

anden said:
I have been lurking this board for some time but this thread had me register to reply.


The few reports I have found on the 50-150 OS indeed gives the impression of a premium grade lens. As much as I like the Canon brand and its lenses I already have, it looks like I have found the missing link I have been looking for in another brand. If Canon doesn't soon announce an EF-S 50-150 2.8 IS...
Canon is not going to release one soon, probably never. So buy the Sigma and hope it works on future Canon models unlike some of the older ones that won't.
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Tulip with 7D and 100 f.4L macro

More of test. In hindsight, additional shots at wider apertures would have been instructive for comparison purposes. Still, wider apertures would have lowered the DOF, which I wanted to maximize in this case. Lots of detail in this tulip that I found interesting. The DOF trade at some point becomes an artistic choice, even considering some optical distortion - and not an absolute necessity. :)
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Seeking for opinion about body option.

Dylan777 said:
tomscott said:
Why save the 5D MKIII, I dont understand? When it hits the max shutter life just have it serviced. My 40D hit 139,000 and was still going strong (although I know it is good for 150,000)

By the time you hit 150,000 there will probably be a 5D MKIV

+1....unless you want to keep it as a collectable item.
Don't know how much a shutter box replacement costs, but i'm guessing it's less than you'd lose by selling a 5dII to get a 7d then a 10-22mm EFS on top
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Likeliness of a Canon EF 14-24 2.8 anytime soon?

Dylan777 said:
Razor2012 said:
Dylan777 said:
until then....shooting 5D III + 16-35 II is not so bad at all.

A 14-24 would be great, but the 16-35 II will have to suffice for a while.

;D ;D ;D....I'll bring 5D III + 16-35 II with me next coming trip to Hong Kong & China. Helllllloooooo chinese food :P

Mmmmm, chinese food. 8)
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Canon U.S.A. Introduces Two Compact Lightweight Cinema Zoom Lenses For 4K and 2K Digital Cinema Came

Re: Canon U.S.A. Introduces Two Compact Lightweight Cinema Zoom Lenses For 4K and 2K Digital Cinema

Axilrod said:
chabotc said:
Wow now thats some serious lens action - 24k for a lens is a mind blowing amount when you're used to DSLR pricing :)

I do wonder, are they really _that_ much better?

$24k is average for a cinema lens, heck the zooms they released earlier this year are both around $43k. A full set of Arri cinema primes is between $100,000-$180,000 depending on which set you get. These clearly aren't for consumers.

Do u think they fall into cinema lenses, with their awful focal lengths???? and being more expensive is always a justification for pro-lenses. OK we got.
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Time from Announcement to Release

unfocused said:
While I'm usually all for renting, I'd suggest you do the math.

14 day rental of the 5DIII will run you about $400 (with damage waiver and you definitely don't want to rent without the waiver).

Ask yourself which is the better deal: Rent the 5D or pick up a refurbished 7D ($1,360) or 60 D ($800) and sell it later when a new model comes out. If you think you can sell the 7D or the 60D for more than the price less rental, you could be money ahead buying. Plus you'll both have cameras until the next model comes out.

You're math makes sense. Might not want to spend that much for a rental. Maybe I will just get a 7D for the time being and just sell it for the next release. But then there is the 5d mark ii for a tad bit more. Haha.
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4K, 8K, UHDTV and the big megapixel EOS

LetTheRightLensIn said:
gnd said:
preppyak said:
Most importantly, for many that want larger MP, their end usage is not a computer screen; it's a much larger, higher res print version.


high MP count with a crop mode to save space (ala D800) or medium count on a smaller sensor (ala 7D) can be good when you need to crop heavily such as for distant wildlife too
I had a D800, cropping does not save space, it cuts away part of the image. SRAW that Canon has saves space, but Nikon has nothing similar.
I would not want to pay $$$ for a FF camera and then convert it to a crop.
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