Author Topic: Canon 70D (Read 595553 times)

ShootMeAlready · « **Reply #100 on:** June 11, 2014, 05:38:20 PM »

Quote from: TomJ on June 10, 2014, 04:15:39 PM

Your setup is the exact as mine: 70D, Sigma 18-35 1.8. This lens is TACK sharp at 1.8 too. Stays on the body 95% of the time. Video, stills, etc.

My other two favs for my 70D, are the Tokina 11-16mm. When I travel I like to start off with this lens. Get the big pictures, especially sweet for nightime neon shots. Its parfocal so good for video. Its on 10% of the time.
Second fav is the Sigma 50-150mm ( I went for the II cheaper and lighter than OS), but is very sharp, and again not bad for night time. Its on 15% of the time. Constant f/2.8. The OS is parfocal.
The 18-35mm however competes with f/1.4 glass, because it doesnt need to be stepped down to be sharp. The smallest gripe is that its max f/16 and not f/22. Its on 70% of the time, and is also great for macro duties in low light.
Dont forget with the 70D in video, you can use the 3X lossless zoon, that makes your 18-35mm, a 54-105mm !!! However you lose the touchscreen follow focus when its on.

TomJ · « **Reply #101 on:** June 12, 2014, 06:27:51 AM »

Yeah, F/16 is tough, but I always carry a variable ND filter for outside, bright sun. I can still get a shallow DOF and correct exposure.

You know, I've never tried the dig zoom in video? Didn't even consider that. I'll have to play with it, thanks for the tip!!

Edu · « **Reply #102 on:** June 12, 2014, 05:48:07 PM »

Hi everybody, another 70D user here

Is there any clue on what is the max bitrate or transfer speed for the 70D already? As this is the most important spec to consider the RAW capabilities of the camera. I saw this on a website, It's sayin it can do 91mb/seg or am I wrong?

"(...) New ALL-I codec records at: 91 mb/sec bitrate for best video quality."

URL: http://www.smartreview.com/canon-eos-70d-dual-pixel-af-dslr-camera (under features)

nick.p · « **Reply #103 on:** June 13, 2014, 02:35:28 AM »

Which is a measly 11.375 mB/s

Dark-Master · « **Reply #104 on:** June 13, 2014, 07:26:42 AM »

Quote from: Edu on June 12, 2014, 05:48:07 PM

Hi everybody, another 70D user here

Is there any clue on what is the max bitrate or transfer speed for the 70D already? As this is the most important spec to consider the RAW capabilities of the camera. I saw this on a website, It's sayin it can do 91mb/seg or am I wrong?

"(...) New ALL-I codec records at: 91 mb/sec bitrate for best video quality."

URL: http://www.smartreview.com/canon-eos-70d-dual-pixel-af-dslr-camera (under features)

8bits = 1Byte

Let's do the math.

91/8 = 11.375

That's only 11MB/s... my brother...

And yes, I'm curious as well. But I bet that the 70D storage interface write speed is not that great, shouldn't be better than 6D. I'll be surprised if it's any better... as I hope for that too...

Just 1080p RAW video for 20-40 seconds is more than enough for me for a camera at this price w/ Magic Lantern capabilities. That would make sick stock videos... except moire & alias thanks to Canon.

MJDZA · « **Reply #105 on:** June 13, 2014, 02:36:41 PM »

Hey guys!
Just took delivery of my 70D... Great camera, AF is mindblowing! Can't wait to give it a thorough run-through

Do we have any ETA for a release of ML for the 70D?

Edu · « **Reply #106 on:** June 14, 2014, 11:38:16 PM »

Quote from: nick.p on June 13, 2014, 02:35:28 AM

Which is a measly 11.375 mB/s

I'm a little bit confussed now, I understand that, for example, the 7D can do continuous RAW video at 1728 x 972 with a data-rate of 70Mb/s. Shouldn't be better with 91 Mb/seg? (or is it that the 7D requires not 70Mb/seg but 70MB/seg to do that continuous raw videos?)

Thanks for pointing that out!

GARoss · « **Reply #107 on:** June 15, 2014, 04:04:22 PM »

Quote from: X-STATE on June 10, 2014, 07:58:17 PM

I totally agree with you. This is a great lens!

Add me as a Sigma 18-35mm fan!

Stedda · « **Reply #108 on:** June 15, 2014, 04:17:02 PM »

Quote from: Edu on June 14, 2014, 11:38:16 PM

I'm a little bit confussed now, I understand that, for example, the 7D can do continuous RAW video at 1728 x 972 with a data-rate of 70Mb/s. Shouldn't be better with 91 Mb/seg? (or is it that the 7D requires not 70Mb/seg but 70MB/seg to do that continuous raw videos?)

Thanks for pointing that out!

7D = CF Card
70D = SD Card

nick.p · « **Reply #109 on:** June 15, 2014, 04:18:39 PM »

Quote from: Edu on June 14, 2014, 11:38:16 PM

I'm a little bit confussed now, I understand that, for example, the 7D can do continuous RAW video at 1728 x 972 with a data-rate of 70Mb/s. Shouldn't be better with 91 Mb/seg? (or is it that the 7D requires not 70Mb/seg but 70MB/seg to do that continuous raw videos?)

Thanks for pointing that out!

7d writes at about 72mB/s. That is correct

P0rny · « **Reply #110 on:** June 16, 2014, 04:49:30 PM »

Hey everyone!

A (kinda) new 70D user here as well

My lenses are a
50 1.4
18-135 (I bought it as a kit)
and a 70-200L IS II
but I see a lot of love in the last pages for the Sigma 18-35!

I'm def gonna check it out, other than the obviously awesome f1.8, how does it stack up to the 18-135? I shoot weddings so I immediately see the use for a good wide angle low light lens for group shots... anybody else doing weddings with this?

My usage with video is pretty limited, can you explain how you did the following 3x lossless zoom from your below quote please?

Quote from: ShootMeAlready on June 11, 2014, 05:38:20 PM

Dont forget with the 70D in video, you can use the 3X lossless zoon, that makes your 18-35mm, a 54-105mm !!! However you lose the touchscreen follow focus when its on.

I was recently at a concert and even though I had my 70-200 with a 1.4 extender on, I could have done with some lossless zoom love!

Cheers!

Mars67 · « **Reply #111 on:** June 18, 2014, 06:18:47 AM »

You need to enable digital zoom under video shooting menu tab2. See "Using Movie Digital Zoom" in the manual.

ShootMeAlready · « **Reply #112 on:** June 18, 2014, 02:57:48 PM »

Most users report that only 3X is lossless, but zoom upto 5X is very usable (depending on how much up-resolution you need). After 3X it starts into the algorithmic digital zoom. You wanna shoot the moon? 200mm lens x1.6 crop x 3x = 960mm FF equivalent. With a 300mm lens it becomes 1440mm ...

janoschsimon · « **Reply #113 on:** June 21, 2014, 11:19:00 AM »

+1 for clean hdmi :-) what was the output hdmi resolution? im afraid that raw is with the sd impossible but proress over hdmi that would be nice :-)

cheers janosch

P0rny · « **Reply #114 on:** June 21, 2014, 02:42:28 PM »

Thanks guys!

ShootMeAlready · « **Reply #115 on:** June 23, 2014, 05:53:50 AM »

Ok get ready to be blown away. You want to eliminate aliasing and moire in HD DSLR video ?
Well here is a video for the T3i, that demonstrates.

He uses the 3X video zoom mode to remove the moire. Ive watched another video using a Canon 5d Mark III, that does the same thing with 5X recording (which he thinks is actually 3X, I dont own a 5DMIII so I cant tell if that is so), they claim that the 3X zoom does not skip lines, and that's how it works.

And after watching the T3i video you can be thankful that the only other Canon crop with 3X video zoom is the 70D. 3X video zoom is not a gimmick anymore.

Apparently some folks have known about this for over a year. This link also lists some lowlight macro and tele advantages.
http://www.cineblah.com/post/142/why-the-3x-crop-mode-on-the-canon-600d-is-invaluable

GARoss · « **Reply #116 on:** June 23, 2014, 06:41:56 PM »

I just tried this with my 70d & it did help eliminate moire but the video quality looked much softer.

X-STATE · « **Reply #117 on:** June 23, 2014, 07:34:38 PM »

nanomad, where you are our friend? Tell us something. For example, you're okay

ShootMeAlready · « **Reply #118 on:** June 24, 2014, 01:06:09 AM »

Quote from: GARoss on June 23, 2014, 06:41:56 PM

I just tried this with my 70d & it did help eliminate moire but the video quality looked much softer.

I think the same was mentioned in the conclusion from the video:

"Conclusion:
To me, the results are great. The moire is eliminated. I know this won't work in every situation, but it is a handy trick to have available.
There are unsurprising costs. The depth of field is deeper. The image appears just a little soft with the digital zoom, albeit with decent detail -- and I might not have the focus perfect. For me, I'll trade off the moire in favor of a little softness in the image if I have no choice. The other cost isn't shown in this video, but I've seen it in other video I've shot with the 3x zoom. The noise at higher ISO's is (not surprisingly) worse in the 3x zoom mode. So, the tradeoff might not be so clear in a low-light setting, as the ISO noise might be more offensive than the moire. My guess is that this might become an issue at ISO 800+ or so. But, in daylight, is unlikely to be an issue.
... Since I already have the Tokina (and love it), I'll use it with the 3x zoom when I have to in order to eliminate moire. I will not use it to replace a 50mm otherwise, as I prefer having the sharpness and shallow depth of field option if I don't have to worry about moire."

Who would want to shoot a potential aliasing/moire subject in low light? That's kind of like shooting a polar bear in a snow storm and aiming for detail. COMPOSITION is sometimes is influenced by common sense.

The other video using 5D MkIII, noticed less contrast in 3X shots. That's something which can be addressed by changing your exposure or shooting RAW and address in post. Its not a perfect solution, but if handled correctly a livable one.

Perhaps if you add a bit of hard lighting, it will increase the contrast as well? Hmmm ...

GARoss · « **Reply #119 on:** June 24, 2014, 11:14:08 PM »

Back in the early '90s a few camcorders featured a digital 16x9 mode that did create the intended 4x3 squeezed video that needed a 16x9 TV to be view correctly. Everything looked skinny until the 16x9 TV "unsqueezed" the video to look normal. Because the video was created digitally, not optically, digital sharpness increased in this mode as well. So, the results was an over-sharpened, color faded, soft looking video. It was a failed experiment at best. This was also my impression when recording @ 3x in the 70d. Nice to know the camera will do this. Maybe some will use it but doubt if I ever will.

ShootMeAlready · « **Reply #120 on:** June 25, 2014, 06:53:06 PM »

Quote from: GARoss on June 24, 2014, 11:14:08 PM

Because the video was created digitally, not optically, digital sharpness increased in this mode as well. So, the results was an over-sharpened, color faded, soft looking video. It was a failed experiment at best. This was also my impression when recording @ 3x in the 70d. Nice to know the camera will do this. Maybe some will use it but doubt if I ever will.

The 3X is not a digital manipulation. Its lossless and from my observations sharp. However all my zoom lens have softer contrast and colour at their farthest reach/zoom. When you zoom, you also get less light on the sensor. So unless you collect more light (some how?) when you zoom, it must be softer. The 3X zoom pic. should be softer than one taken from a prime of the equivalent focal length.

I thought a bit more about this. The 3X zoom, really turns the APS-C sensor, into a 1/3 Aps-C sensor. So even though its sharp, the light collected is on a smaller sensor portion. Well we all know that smaller sensors have less intense colour/contrast and handle low light worse increasing noise. So the 3X zoom, keeps the same number of pixels but now its over a smaller sensor. So with less sensor it has to be softer.

Dark-Master · « **Reply #121 on:** June 25, 2014, 10:25:22 PM »

nanomad seems to be busy

Last Active: June 10, 2014, 05:48:14 PM

Let's wait patiently for the big news

a1ex · « **Reply #122 on:** June 25, 2014, 10:38:59 PM »

Meanwhile, if anyone wants to run the 70D code in QEMU, just ask (I can send you the dumper). You will need some basic ARM assembly skills and you also need to be familiar with the command line, and able to compile programs on Linux.

hi2gage.pdx · « **Reply #123 on:** June 26, 2014, 07:16:45 PM »

Quote from: a1ex on June 25, 2014, 10:38:59 PM

Meanwhile, if anyone wants to run the 70D code in QEMU, just ask (I can send you the dumper). You will need some basic ARM assembly skills and you also need to be familiar with the command line, and able to compile programs on Linux.

Does this mean we are coming close to getting a working version of ML on the 70D?

TomJ · « **Reply #124 on:** June 27, 2014, 07:05:15 AM »

Quote from: hi2gage.pdx on June 26, 2014, 07:16:45 PM

Does this mean we are coming close to getting a working version of ML on the 70D?

No. But it does mean it's being worked on. It will come when it comes.

News:

Author Topic: Canon 70D (Read 595553 times)