January 30, 2015, 04:46:31 AM

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Messages - Lee Jay

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1
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 29, 2015, 10:51:20 AM »
It's about shooting, not necessarily the end display.

That 'argument' is asinine. If anybody was to suggest you need to shoot with a medium format digital sized sensor to use a crop camera sensor area for your image, or shoot with a 100mm when you need a 400mm you would be, rightly, laughed at. 

Sure a little amount of 'cropping' space to straighten an image etc is nice, but 400% is crazy.

400%?  Where'd you get that number?  From full-HD it's 100% (factor of 2).  It's quite common for me to consume 40% in the process of post stabilization so 100% isn't crazy at all.

Idiot*.

FHD 1920x1080 = 2,073,600, 4K 3840 x 2160 = 8,294,400

8,294,400/2,073,600 = 4.

4K is 400% the size of FHD.

Crop cameras have a multiplication factor of 1.6 (for Canon) but a FF sensor is 2.56 times the size of a crop camera's. Or, twice as long and twice as tall, for four times the area. Now before we get into an argument about factors and multiplication, which I am not interested in doing with you, it takes four FHD sensors to make one 4K sensor, if you crop a 4K image to 25% it's area you get the resolution of a FHD 1080 image.

* that was the very first word you typed to me in your first reply to a post of mine in the forum.

Cropping is a linear measure, not an areal one.  This is true in both sensor sizes and in post processing software.

4k/2k = 2 = 100% increase or crop of 50% of the image.

2
EOS Bodies / Re: Global Shutter Coming to Canon DSLRs? [CR1]
« on: January 29, 2015, 10:48:20 AM »
I'd like to hear why people want a very fast sync speed.  I know quite a lot about this topic and can see direct applications for sync speeds up to about 1/1000th, but at that point applications get a lot more limited.



1/1000- to at least 1/2000 sync works for one primary situation- freezing action in mid-day ambient light, without an impractical car-battery sized power source.

The issue there is that you need to be very, very close to your subject for the flash to make any real contribution to the ambient light.  So this tends only to work for macros.

3
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 29, 2015, 10:28:56 AM »
It's about shooting, not necessarily the end display.

That 'argument' is asinine. If anybody was to suggest you need to shoot with a medium format digital sized sensor to use a crop camera sensor area for your image, or shoot with a 100mm when you need a 400mm you would be, rightly, laughed at. 

Sure a little amount of 'cropping' space to straighten an image etc is nice, but 400% is crazy.

400%?  Where'd you get that number?  From full-HD it's 100% (factor of 2).  It's quite common for me to consume 40% in the process of post stabilization so 100% isn't crazy at all.

4
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 28, 2015, 04:06:25 PM »
Quote
http://www.usa.canon.com/cusa/professional/products/professional_cameras/cinema_eos_cameras/eos_1d_c

http://www.usa.canon.com/cusa/professional/products/professional_cameras/cinema_eos_cameras/eos_c500

And when you step into those two models, you're in the RED Scarlet price range

Which you previously showed to be within your budget. Canon makes 4K Raw cameras. What you want is an inexpensive Canon 4K rig. Assuming the thermal design of the rumored body is adequate, I don't see any reason Canon wouldn't enable it (as at that point it would be largely software).

Either way, the notion that an iPhone will record 4k before a Canon camera is demonstrably false. ;)



[If video were my thing and I had the budget, I'd go down the RED path too]
http://www.forbes.com/sites/paulmonckton/2015/01/13/4k-video-on-iphone-6/2/

Do you believe it was announced before the C500 or 1Dc?

5
Lenses / Re: POLL: Which of these UWA options would you buy?
« on: January 28, 2015, 03:27:51 PM »
OPTION 1: 16-35mm f/4L IS + 8-15mm f/4L Fisheye
PROs: Offers both rectilinear and fisheye UWA depending on focal length, 16-35mm accepts filters
CONs: No rectilinear option wider than 16mm

Sure there is - defish the fisheye.

I'd choose what I did choose - the Sigma 15mm fisheye.  It's f/2.8, relatively inexpensive, and optically excellent.

6
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 28, 2015, 02:39:34 PM »
The Sony FS7 is $8000 and is not being undercut by the $2500 Sony A7s.  However, for some reason I DO sometimes think Canon is under such silly impressions.  If the new 5 body does NOT have internal 4k capability of any sort, it's going to be perceived as a big fail, and I frankly couldn't blame reviewers for seeing it as such given everyone else going that direction or ALREADY there.

By who? By all the people that want video on their camera. So that's purely personal. I'm not interested at all in video, so for me that would never be the reason of a fail. I see the same remarks for every new model coming over here. Simply because people want to use a camera in another way as the manufacturer did create it. No, I don't want a body that must do all (video, high speed, ...). I like the fact that cameras are dedicated to a specific area of use. That doesn't way to say that you can also use for other ways, but they are really not intended as general purpose tools which deliver the max of specification in all areas. Forget that, will never happen.

I very much agree with this. While 4k would be nice, it's way down my list of priorities. I think I've used video recording only three times while using my 7D and never on my 5DIII. Different horses for different courses though. :)

How about no video at all and sell it for $300-500 less

More, actually, not less.

7
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 28, 2015, 12:11:25 PM »
Also on a side note, in forums I see so much dismissiveness about manual focus lenses.  For action shots I get the reason for the objection.  For portrait and landscapes I don't understand the objection.

Most of my portrait shots are shot in AI-servo.  For me, portraits are action shots most of the time.

I've never shot landscape so I don't care much about that.

8
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 28, 2015, 11:05:49 AM »
Until they step into 2012 and put 4k RAW video in the cameras... I don't care. Even GoPro has 4K footage now... Canon is turning into the Apple of the camera world.. forever playing "catch-up."

I sold my 5Dm3 last year and moved to RED cameras. i WISH they'd make a 4k RAW camera so I could pick one up for backup.

GoPro's don't shoot raw, and RED cameras cost an order of magnitude more than a 5D-series camera once you include all the accessories that are required.

9
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 28, 2015, 09:43:18 AM »
Sorry for the noob question, but what is the CR1, CR2, CR3?  Is it something to do with the confidence level in the story?  (That's all I could figure out....)

Yes.  CR1 means it's most likely made up.  CR2 has some confidence.  CR3 means it has a good chance of being real.

10
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 28, 2015, 09:42:33 AM »
Lets hope for a brand new sensor with good DR, I won't buy it I think since I'm satisfied with my 5D3 still.

My guess is that the next ff camera will sell anyway, even if the advancements are mediocre or the "high mp" sensor is "just" an upscaled 7d2 crop sensor.

All this talk of "18mp is plenty 'nuff" and "no more dr for me, thank you very much" will be gone instantly the upgrades are actually available. If you just go by "my current camera works just fine", Canon would have sold no dslrs at all for years.

Yup! +100.

Not true.

I buy stuff that enables me to do stuff that I want to do that I can't do with the stuff I'm using at the time.

A camera with 10 stops more base ISO DR wouldn't enable me to do anything I don't do already because I essentially never bump into the base ISO DR I have already.

A camera with 1/2 stop more high ISO DR would help me because I'm always bumping into the high ISO DR I have available right now.  Unfortunately, high ISO DR is much more restricted than base ISO DR and Canon's sensors are already as good as the best of the rest.

So, if Canon comes out with a 16 stop DR (at base ISO) camera, that will be fine, but not of any particular interest to me.  Cleaner is always better so I wouldn't oppose that, but it wouldn't be a big selling point for me either.  There are lots of other things about a camera that interest me more than base ISO DR.  I'm still waiting to see my first shot where Canon's base ISO DR was a real problem in a real shot and where the shot would have been okay if it had been shot with just 1-2 stops more base ISO DR.  I've still only seen contrived samples.

11
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 28, 2015, 09:19:41 AM »
Why constrain yourself with what Canon offers?

Why constrain yourself with the weaker (in some cases much weaker) lens selection that other brands offer, or hamstring their AF performance with an adapter?

When the best lenses on offer are manual focus only, how can the requirement of being able to use autofocus be taken seriously?

Which "best" lenses are you referring to?

Zeiss Otus series come to mind.

Maybe you missed the reviews of the 55/1.4?

Would you rather have an in-focus shot from a Canon 50/1.4 or an out-of-focus shot from an Otus?

Something like 5% of my shots are of subjects that would tolerate a manual focus lens on a body that doesn't have a split-prism focusing screen in the viewfinder.

12
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 28, 2015, 08:47:49 AM »
As previously posted, trying to do all things for all people often results in doing less for all people. There is a reason Ferrari does not make pick up trucks.   ;D

Bad example.

Lamborghini makes farm tractors.

http://en.wikipedia.org/wiki/Ferruccio_Lamborghini#Legacy

13
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 27, 2015, 03:10:24 PM »
If we see a 50+ MP sensor in a Canon professional camera it will be interesting to see how older lenses still in manufacture hold-up. Higher resolution lenses properly corrected for chromatic abberations & color fringing will be expensive to make, so expensive that for many they will not be affordable its not just the glass but the mechanical tolerance to make that glass work optimally all the time.

This is no more pixel density than the 70D, and even an 18-135STM holds up quite well on that camera.  So, any lens with quality equal to or better than a relatively cheap but decent consumer hyperzoom will hold up just fine.  Now, the 18-135 is an EF-s so that makes it easier to design and cheaper, but the same thing should hold for lenses like the 24-105STM.  Lenses like the 16-35IS, 24-70II, 70-200II, 100-400II and basically all the L-primes and decent consumer primes (24/28/35/85/100) will be just great.

14
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 27, 2015, 08:50:34 AM »
People are going to argue black and blue that I'm wrong for doing this, but I'm not going to buy a new DSLR from Canon (or Sony!) - regardless of how good the sample images are - until it's been tested and evaluated by DxO.

Why?

Because scores aside, their methodology is fixed and the same for every model.

Thus I can look at their sensor measurements for noise and DR and get an independent view on where Canon are at with their new cameras relative to other cameras.

And to not put a finer point on it, I don't trust Canon to deliver significant IQ improvement just because it is a new FF sensor on a new camera.

I've recently found many of their measurements to be self inconsistent (different QE at different ISOs) and thus clearly wrong.  Some of them are different by a factor of two!  Unless you're going to analyze their data very carefully, I'd just ignore them.

And have you run your own tests to show that the QE is the same at all ISOs for those very same cameras?

No need.  It can't change.  To change it would require changing the physical structure of the sensor.

15
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 27, 2015, 08:49:31 AM »
Why constrain yourself with what Canon offers?

Because they make the best cameras, the best lenses, and the best overall system, and the only constraint is at an ISO I use for perhaps 15% of my shots.

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