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Messages - Lee Jay

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46
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 26, 2015, 11:13:46 PM »
Sony just announced today the next generation of big MP and yes it is a 50mb version.  Now this is interesting are we going to see a sony sensor in a canon? 

I hope not.

47
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 26, 2015, 09:34:28 PM »
That's a lot of new and diverse stuff.  Something for everybody!  :D

Guessing not for me.

I'm interested in a dual-pixel (and updated) version of the 5DIII or 6D, and this doesn't sound like it (maybe, though - 5DIV?).  I'm not remotely interested in a $3,000 11-24 or an any-price M3 or 750D.

48
Canon General / Re: Photographer Petitions Canon for Left Handed Camera
« on: January 26, 2015, 01:46:22 PM »
This seems to me like the perfect case for aftermarket 3D printing.  Understanding that the body would be a different material, not as durable, weather sealed, etc. - but I would think someone savvy could redesign a new body and adjust the wiring in such a way that it would fit.

That's not very realistic, I'm afraid.
The production cost would exceed the price of the camera itself by far, yet you propose to "adjust the wiring" and therefore to take an existing camera apart. You'd end up with some hackish DIY camera for the price of 2 or more 5D3R's without any warranty whatsoever. Nobody would buy it.

Adding an accessory like a grip to the existing camera is a lot more realistic.

Yeah...but I wonder if a 3D-printed grip that plugs into the remote release port, screws onto the tripod thread, and has nothing in it but a shutter release system would do the job, and not be that expensive.

49
Canon General / Re: Photographer Petitions Canon for Left Handed Camera
« on: January 26, 2015, 12:05:11 PM »
Anybody heard of Steve McCurry?

https://www.youtube.com/watch?v=NLgd6isBAoM
I've posted this each time I've seen this story - I'm not sure how anyone in her situation could miss that.

His approach wouldn't work at all in this case.  He holds the camera's weight with his right hand through a mini tripod or bar.  This lady doesn't have use of her right arm.

50
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 26, 2015, 10:41:13 AM »

I've had my cameras for 9 and 10 years.  I've only had one lens that long.

And that helps explain some of the completely irrelevant extrapolations you come out with so often.

I have newer cameras too, and I have astro stuff.  I have pixels from 8.2 microns to 1 micron and focal lengths from 15mm fisheye to 5600mm.

There's nothing wrong with my testing and I've done loads and loads of it for many different purposes.

51
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 26, 2015, 09:19:44 AM »
In thinking about it, if I had $5K to spend I would do so on an high end lens like the Zeiss Otus 85mm rather than upgrading my 5DIII.  My reasoning is that such a lens makes every one of my cameras instantly better. There is no doubt of this. That even includes my IDs II (that I use for time lapse sequences and landscape) and my 650D.  It makes my videos better too.  If I were to buy a 5DIV or  or whatever they call it in the future or a IDx when the price drops, then that lens would make those cameras better too.  Cameras will come and go on a fairly short 3-4 year life cycle because Canon and other manufacturers have to make a profit.  But a high quality lens has a much, much longer life cycle.

I've had my cameras for 9 and 10 years.  I've only had one lens that long.

52
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 26, 2015, 09:09:13 AM »
For those the "rubbished" the idea of more sensitivity / DR and going beyond the human eye I encourage you to go to Image Sensor World blog and go to November 25th and read the Sony investor update.

Like the slide entitled, "Concentrate on expanding market for mobile, IP Security cameras and automotive"?


53
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 06:09:28 PM »
Obviously the guys at Red & Arri have got it wrong then, obviously no one has a single shot with clipped highlights.

You do realize, I hope, that the Sony and Nikon sensor with more base ISO DR than Canon sensor do it by lowering the read noise, thus making shadows cleaner.  At the same exposure, they still clip at the same rate as Canon sensors.  The only way to get more DR is to shoot with less exposure and retain cleaner shadows.

54
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 05:45:11 PM »
You obviously dont speak for the majority. The current 36MP Sony sensor also in the Nikon D800 is 14ev and in cinematography / video 14ev is still not enough. Plenty of situations in landscape where more DR would be useful particularly in strong sun situations with deep shade.

I have more than 300,000 images under management in Lightroom.  I went looking for high-DR situations shot at base ISO.  I was not able to find a single image where my Canon sensors didn't have sufficient DR AND 1-2 more stops would have made the difference.  I found one situation shot at base ISO where 15-20 more stops would have done it, but not 1-2, and that was the only situation I found where I couldn't get enough DR at base ISO.

On the other hand, I have thousands of high-ISO shots where DR was severely constrained.

55
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 05:11:57 PM »
You are talking about one set of currently totally meaningless theoretical 'limits' that have been shown to not be hard limits.

Canon showed tech years ago that showed they were working on sub diffraction level imaging for consumer cameras and there are advantages to resolve below diffraction levels especially when using Bayer array covered sensors. Besides, lenses would have to far exceed diffraction limited resolution for the system, lens and sensor, to resolve them.

Do not attach any importance to 'diffraction limits' when thinking sensor resolution for consumer cameras.

What the heck kind of nonsense is this?

Diffraction limits aren't optional and you can only "beat" them in certain situations (like hard phase shift masks for lithography) under situations that have nothing to do with digital imaging.

When I calculate diffraction limits, I use knockdowns for Bayer masks and AA filters, but the results are absolutely applicable and I've confirmed them through testing.

That said, 50MP full-frame sensors aren't coming close to pushing the real-world resolving power of today's better lenses.

56
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 25, 2015, 10:36:41 AM »
This Sensor/Camera needs to so much more than just about Megapixels,having been a loyal Canon user for more years than i care to mention i feel this is the last chance for Canon(for me) if we do not get clean shadows and better DR the 5d2 will be the last camera i will have purchased from Canon. I so want this to be right and mirror less would be good as well. Canon's lens line up has become stellar and the super wide will probably arrive this year to make it complete.50mp must surely be the limit for FF sensor as other factors start creeping in that are detrimental to image quality as i understand it. Fingers crossed as this needs to be a Nikon 810 beater to put Canon back at the top.

Mirrorless would make it DOA for probably 90% of its potential users, cleaner shadows at base ISO would be nice for a very limited amount of photography, and 50MP is no where close to the upper limit for a full-frame sensor.  Think gigapixel.

57
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 11:24:27 PM »
But APS-C have more advantages than the spurious pixel density which has been illustrated time and time again to be largely meaningless in real world shooting of same generation sensors.

Other way around.  It's virtually always to be proven to be real and about what the math would lead one to expect.

58
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 11:03:17 PM »
I didn't miss your point, I ignored it. [/quote]

Even worse.

Quote
How do you shoot with a lens 1 1/3 stop faster on your crop camera if you are shooting on your ff camera with a 1.2, or a 1.4?

You can't.  That's the biggest reason I own a full-frame camera.  It's capable of shooting in areas outside the performance envelope of the crop camera.

Quote
How about if you are shooting 2.8 zooms all around? What if you are going big with a 300/400 f2.8 on the ff, or a longer f4?

If you use a longer f/4 (say, 500/4), then a 300/2.8 on crop will pretty much do the same thing.

Quote
There are an awful lot of people here who did exactly what I laid out, owned a crop camera and then got a ff one and hardly touched the crop camera again afterwards, virtually every one of them will say they see the difference in their images, if you can't in yours then that is up to you.

I can - it's a stop, same as I can see the difference between f/4.5 and f/2.8.

59
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 10:38:38 PM »
The real competitor for this camera will not be other full frame cameras, but the Pentax 645Z

Not really. Anybody that has owned a crop camera then moved to a ff camera and then left the crop camera to gather dust knows the intrinsic difference that sensor size makes, well that happens again going to medium format digital, throw in the lack of AA filters on medium format and the differences become even bigger.

In the same way that crop  can't ever deliver what ff can (though I am not saying crop cameras are not very good and have several key advantages over ff cameras in specific situations), ff will never be able to deliver what medium format digital can. The point at what each sensor size becomes 'good enough' for each individual is an entirely personal call.

I use a crop camera and a full-frame camera side-by-side all the time.  I just usually use a lens on the crop camera that's one stop faster than the lens on the full-frame camera allowing me to use one stop lower ISO on the crop camera.  The resulting images are virtually indistinguishable from each other.

I don't care what your opinion of the differences are, or are not, as I very clearly said.

Quote
The point at what each sensor size becomes 'good enough' for each individual is an entirely personal call.

You missed the point.  The differences are removed if the smaller sensor shoots at a lower ISO.

A full-frame sensor is like a faster lens.  The difference between 1.6-crop and full-frame is 1 1/3 stops.

60
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 10:29:10 PM »
The real competitor for this camera will not be other full frame cameras, but the Pentax 645Z

Not really. Anybody that has owned a crop camera then moved to a ff camera and then left the crop camera to gather dust knows the intrinsic difference that sensor size makes, well that happens again going to medium format digital, throw in the lack of AA filters on medium format and the differences become even bigger.

In the same way that crop  can't ever deliver what ff can (though I am not saying crop cameras are not very good and have several key advantages over ff cameras in specific situations), ff will never be able to deliver what medium format digital can. The point at what each sensor size becomes 'good enough' for each individual is an entirely personal call.

I use a crop camera and a full-frame camera side-by-side all the time.  I just usually use a lens on the crop camera that's one stop faster than the lens on the full-frame camera allowing me to use one stop lower ISO on the crop camera.  The resulting images are virtually indistinguishable from each other.

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