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Messages - dilbert

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1741
EOS Bodies / Re: 7D Mk2 ..... APS-H
« on: January 28, 2012, 05:29:45 AM »
I just cannot comprehend any of this. Why do you want APS-H again? >_>

Because it is better than APS-C?

APS-H, itself, is not better than APS-C.

What's different is the technology used to make the sensors.

The problem is that in order to deliver 12MP for both APS-H and APS-C, different technology is required because the pixel density on each sensor is different.

As it stands today, APS-C sensors found in cameras released in the last few months more than equal APS-H sensors found in any of the 1D line of cameras.

However there's no free lunch - if I use a fixed 300mm zoom on an APS-C camera to photograph a subject, I'll get a picture with higher detail than I will than if I used an APS-H camera because there are more pixels in the center of the picture where my subject is.

1742
There is that, plus the disruption caused by every Tom, Dick and Harry running around with a DSLR trying to get the best angles - that can often ruin it for the other guests/spectators.  The way seating is arranged in a stadium it would just not be possible, in many cases, to shoot with a long lens without sticking it into the neck of the person in front of you - spectators are packed in like sardines.  You will have a very irritated person in front of you if you are continually sticking your big white lens into his/her neck.

Not to forget the noise a DSLR makes when it fires off at 10fps for a second...

At some events (professional tennis), this can be quite distracting to someone in the audience.

Do you want to be sitting in front of someone with a DSLR that is going full speed at every serve, etc, for as long as the match goes?

... and there's also the "challenge" of needing to be especially quiet at serve.

1743
EOS Bodies / Re: 5D Mark III Brief Specs? [CR1]
« on: January 27, 2012, 11:19:02 AM »
I think the 7D Mk II needs to be put to bed now. In my view Canon would be mad to bring out the 7D Mk II  as sales are still doing well and its not nearly reached its end of life. It doesn't need to be replaced or upgrades right now. Its serving its purpose on the market so Canon wont touch it just now.

With the C300, Canon made a statement about how the time to bring it to market was a record short time for them at around 2 years.

It's more realistic to assume that a camera takes 3 to 4 years to bring to market and that they arrive in the market place when they are finished.

Lets assume that the design work on the 7D Mark II started before the 7D was released as the tail end of the project schedule (lets assume 3 months) will be for ensuring that production is ready, working, marketing knows what it has to do, etc.

So in September 2009, Canon announced the 7D, even as it is likely that the 7D mark II was already being talked about inside Canon. The roadmap for the project will have been laid out assuming that everything would proceed according to plan. Assume the same for the 5D Mark III. Now throw in a couple of natural disasters (earthquakes, tsunamis, flooding) and a man made on (nuclear reactor) just for good measure and project plans are suddenly obsolete with respect to a final delivery date - but not the product itself.

So at this point in the project we're maybe a year out from the 7D mark II being released. In light of that, the camera design has probably been whittled down to just a few different models that are now starting to find their way into the hands of testers and over the course of the next few months, feedback on usability, image quality, etc, will make its way back in and one will be chosen.

Whatever the number of megapixels are now, it is likely too late to change it as it would mean a new sensor and new circuit board design for the camera internals.

Similarly, delaying its release is not something that they will have planned for and that it will hit the market irrespective of how good or bad the current sales of the 7D are.

Delaying the product risks moving it further out into the future where its feature set may be more vulnerable to other, newer, cameras, that started design later and are thus able to use new components, etc.

1744
Canon General / Re: Patent: Canon RAW Video
« on: January 27, 2012, 10:57:28 AM »
Surely it would have made sense to hold off on the C300 so they could build in this new RAW video capabilities so you can output 4k video. oh well, C300 II will be around the corner I guess, Canon are turning into Apple!

No, the design of the C300 is quite deliberate - it is aimed at providing the best IQ possible for 2K video.

This is why there is no interpolation even to generate 2K video.

The design of the C300 means that problems such as moire just will not occur.

1745
EOS Bodies / Re: 7D Mk2 ..... APS-H
« on: January 26, 2012, 09:11:26 PM »
Why does everyone need to keep making up excuses?
The APS-H sensor is a misfit...
People keep making excuses because they want to have 1D4 IQ with a 7D body/price.

Let me fix that for you...

People keep making excuses because they want to have a 1D series camera at a 7D price.

And for that I think we have to blame/thank Nikon for putting sophisticated AF, etc, in lower end models.

1746
EOS Bodies / Re: 5D Mark III Brief Specs? [CR1]
« on: January 26, 2012, 07:33:09 PM »
I suppose the other question is, will we see the 24-70 II announced at the same time?

The odds have got to be getting better on that, especially if there is talk of a 5D3/24-70II kit...

1747
EOS Bodies / Re: 5D Mark III Brief Specs? [CR1]
« on: January 26, 2012, 07:28:39 PM »
Why isn't this CR0?

1748
EOS Bodies / Re: 7D Mk2 ..... APS-H
« on: January 26, 2012, 03:48:02 PM »
I think that the main reason they won't be putting an APS-H sensor in a non-1D line camera is that they don't want to risk 1DIV users trading down due to their loss of pixels on target in the 1D X.  If they put a 24MP APS-H sensor in a 7D-esque body and charged a 5D MkII price for it, there might be some who'd be tempted. 

Why does everyone need to keep making up excuses?

The APS-H sensor is a misfit and only came about because of technical restrictions with respect to sensor yield in fabrication. With the technical restrictions now history and the sensor yield problem solved, there is no longer any reason for APS-H sensors to exist.

Consider that it is the underlying sensor technology that is important, not the sensor size. Thus if they can manufacture an APS-H sensor at 16MP then they can build a FF sensor at 27MP with close to the same characteristics. (A 27MP full frame sensor will deliver a 1.3 crop that is 16MP.)

1749
EOS Bodies / Re: 7D Mk2 ..... APS-H
« on: January 26, 2012, 03:42:32 PM »
i only wonder why they put so much effort in R&D of an 120 MP APS-H sensor?
why did they spend the R&D resources on APS-H and not FF or APS-C?

Perhaps because while there are other FF and APS-C sensors, Canon was the only one using APS-H - therefore, Canon's claim to having the only 120 MP APS-H sensor will likely stand unchallenged.

One explanation that always seemed logical to me was law enforcement and security cameras. High resolution combined with low-light sensitivity would greatly improve the success rate when the cameras snap a shot of your license plate as you roll through a stop light. APS-H might be the perfect tool for these cameras.

They don't need better cameras for reading license plates.

With current technology, you need to be doing in excess of 250km/h before the image blurs on one of those cameras and the chances are the environment around such cameras does not agree with such speeds.

With respect to cameras used for physical security, you're dreaming. The primary purpose of those cameras is not to record detail but to provide live video so that someone watching can notice something suspicious. On top of that, you've got to record it 24x7x365 - that's a lot of disk space even with resolution as low as 1080i.

Next is the size of the cameras used - they're completely at odds with the requirements of such a sensor.

Simply put, the 120MP APS-H sensor was chest beating.

1750
This topic is in the wrong forum.

1751
EOS Bodies / Re: 7D Mk2 ..... APS-H
« on: January 26, 2012, 11:47:11 AM »
APS-H came about because that was the largest size sensor that Canon could initially produce with a single pass of the "stepper" that exposes the silicon wafers.

This meant that full frame sensors such as those in the early 1Ds cameras required two passes of the stepper, introducing risk to the process of creating the sensors if the stepper is not properly aligned for the second pass.

The introduction of the 1DX likely means that Canon now have single pass steppers working well for full frame 35mm sensors and that production of APS-H sensors no longer has a financial advantage for Canon.

Thus there's no chance of seeing APS-H reappear in any other model camera as all of the technical problems that made it attractive from a business perspective have been solved.

The only question that remains is at what point did they start using the single-step production. Was it prior to the 5D Mark II (and thus the drop in price from the 5D to 5D Mark II) or was it later, and hence the price drop from $9000 for the 1Ds series to $6800 for the 1DX.

1752
EOS Bodies / Re: 5D Mark III (or other) Followup
« on: January 25, 2012, 02:33:30 PM »
This thread is about the 5DIII, that's what I was talking about.  The 5DII is almost 4 years old, it would be foolish of Canon not to improve the high ISO performance and dynamic range.  It just seems like those changes are inevitable.  There have been a flood of people on CR in the last week because of these posts, it's annoying going through pages and pages of nonsense.

Has Canon never done anything foolish?  Honestly, I've heard lots of complaints about the 5DII...and almost none about it's sensor.  Excepting the new 1D X (no data yet), the 5DII has the least ISO noise and is effectively tied for the best DR.  Is it a huge stretch to think they'll just re-use that sensor?  I don't think so.  They might make slight improvements, maybe gapless microlenses, etc., but if it ain't broke...  Plus a re-use would save a lot of R&D costs...
h
The 5d2 sensor has obscene pattern noise problems that need fixing.

1753
EOS Bodies / Re: 5D Mark III Sighting?
« on: January 23, 2012, 07:19:17 PM »
Oh dear god, no.  Not that stupid mode dial unlock button.

You obviously don't spend a lot of time with a camera hanging by your side.

I do. Hours and hours walking around streets with my 5DII hanging at my side, or hours and hours hiking through the wilderness with my 7D hanging at my side. 

Number of times I've accidentally rotated a mode dial?  Perhaps 3-4. 

Number of missed shots resulting from that?  One - the first time.

Number of times I've looked up to see an action scene unfolding on front of me or a bird flying close by, and been able to quickly spin the mode dial to the hard stop at C3 to get the shot?  Probably in the hundreds.

Number of missed shots resulting from having to press a button before spinning a dial?  I don't know, but I can almost guarantee it'll be more than one.

It's really not that hard. You don't use an extra hand and the other finger that is required is generally not far away (for most people, anyway.)

Do you have a 60D or mode dial-converted 7D or 5DII that you've done this with?  Currently, the camera hangs at my right hip on a BlackRapid strap. I grab it with my right hand and as I'm bringing it up in front of my body, I rub the mode dial across the palm or fingers of my left hand as that hand reaches for the lens barrel. It's one smooth, fast motion, and I can't see how having to use a thumb or finger to press a button and then spin the dial can be as smooth or as fast. 

OTOH, I run into this mostly with the 7D and birds. So, in a 5DII replacement it probably isn't a big deal.  Personally, considering that I'm planning to get a 1D X with no dial at all, changes are in order for me, regardless.

Dude, I grew up with SLRs that came with it by default.

I was bummed when I was forced to use DSLRs *without* it.

1754
EOS Bodies / Re: 5D Mark III Sighting?
« on: January 23, 2012, 06:34:18 PM »
Oh dear god, no.  Not that stupid mode dial unlock button.

You obviously don't spend a lot of time with a camera hanging by your side.

I do. Hours and hours walking around streets with my 5DII hanging at my side, or hours and hours hiking through the wilderness with my 7D hanging at my side. 

Number of times I've accidentally rotated a mode dial?  Perhaps 3-4. 

Number of missed shots resulting from that?  One - the first time.

Number of times I've looked up to see an action scene unfolding on front of me or a bird flying close by, and been able to quickly spin the mode dial to the hard stop at C3 to get the shot?  Probably in the hundreds.

Number of missed shots resulting from having to press a button before spinning a dial?  I don't know, but I can almost guarantee it'll be more than one.

It's really not that hard. You don't use an extra hand and the other finger that is required is generally not far away (for most people, anyway.)

1755
EOS Bodies / Re: 5D Mark III Sighting?
« on: January 23, 2012, 06:23:13 PM »
Oh dear god, no.  Not that stupid mode dial unlock button.

You obviously don't spend a lot of time with a camera hanging by your side.

For a pro that does (be it because they're using another camera or some other reason), this is comforting.

On SLRs, it used to be that the mode dial lock was also how you turned the camera on/off.

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