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Messages - marinien

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61
EOS Bodies / Re: 5D Mark III/X Variation & New Flagship Speedlite? [CR1]
« on: February 18, 2012, 10:34:00 AM »
  I personally doubt they'll be using the 1D4 system, they'd still have to redesign it from the ground up for a FF sensor anyway. I think it's much more likely that it will get a less robust version of the 1DXs 61 point. In that way they can increase the economy of scale by using essentially the same AF system in their entire FF line up.

No need to redesign anything. The APS-H 1D shared the same 45-pt AF module with the FF 1Ds from Marks I-III. So by extension utilizing the APS-H Mark IV AF module on an FF model would be a simple drop-in as well.

Ummm...no.  The fact that they all have 45 points doesn't mean they're the same sensor, any more than the fact that both xxD and xxxD have 9-pt AF means they're the same.  In the case of the 1D IV vs. 1DsIII, although the 1D IV has a slightly wider spread relative to the total frame, it's physically a smaller sensor. So, if you just dropped it into a FF camera, it wouldn't have nearly as wide a spread. 

Granted, they could drop the 1D IV AF into a new 5-series body, and it would still have better coverage than the pathetic spread of the 5D/5DII AF points.

What you said may be true with the 1D IV and the 1Ds III. However, the older 1D and 1Ds have the same AF sensor size of 8x15mm (hope that I am not wrong here  ;))

I couldn't find the AF specs of the 1D IV and the 1Ds III. However, Canon stated that with the 1D X, they expand the AF from 8x15mm to 8x19mm, so I assume that all older 1 series have the same AF surface, i.e. 8x15mm.

62
EOS Bodies / Re: 5D Mark III/X Variation & New Flagship Speedlite? [CR1]
« on: February 18, 2012, 10:00:04 AM »
  I personally doubt they'll be using the 1D4 system, they'd still have to redesign it from the ground up for a FF sensor anyway. I think it's much more likely that it will get a less robust version of the 1DXs 61 point. In that way they can increase the economy of scale by using essentially the same AF system in their entire FF line up.

No need to redesign anything. The APS-H 1D shared the same 45-pt AF module with the FF 1Ds from Marks I-III. So by extension utilizing the APS-H Mark IV AF module on an FF model would be a simple drop-in as well.

Ummm...no.  The fact that they all have 45 points doesn't mean they're the same sensor, any more than the fact that both xxD and xxxD have 9-pt AF means they're the same.  In the case of the 1D IV vs. 1DsIII, although the 1D IV has a slightly wider spread relative to the total frame, it's physically a smaller sensor. So, if you just dropped it into a FF camera, it wouldn't have nearly as wide a spread. 

Granted, they could drop the 1D IV AF into a new 5-series body, and it would still have better coverage than the pathetic spread of the 5D/5DII AF points.

What you said may be true with the 1D IV and the 1Ds III. However, the older 1D and 1Ds have the same AF sensor size of 8x15mm (hope that I am not wrong here  ;))

63
EOS Bodies / Re: 5D Mark III/X Variation & New Flagship Speedlite? [CR1]
« on: February 18, 2012, 09:42:49 AM »
Second - You can't just take the 1D4's (APS-H) Auto Focus and use it for a FF sensor, you'd lose a lot of the spread needed for an effective AF system. In other words the AF points would be confined to a shorter/narrower section of the sensor than they should be.

Do you have any idea of what you are talking about? My 1D IIN has the same AF system as the 1Ds II, and yes, the 1D has more AF sensor coverage than the 1Ds.

64
PowerShot / Re: "Best compact camera" - DxO review G1X
« on: February 17, 2012, 03:48:01 PM »
if shallow DOF is what you want, 5.6 on the G1X will be the same DOF as 2.0 on a g12

What if I want a fast shutter speed?

Haha, very funny neuro! I don't want to quote your comparison between the 17-55 f/2.8 on crop sensor and the 24/105 f/4 on FF (again  ;D), but I'm sure you know what I'm taking about  ;). Btw, there's no f/2.8 sensitive sensor here, so the advantages are on the G1X's side, right?

65
EOS Bodies - For Stills / Re: DOF FF vs Crop...
« on: February 13, 2012, 11:12:43 AM »
The way I understand it FF gives you a smaller DOF at the same focal length. So if I zoom to 17mm on my crop body and to 28mm on my FF camera, giving them effectively the same field of view, the FF will have a shallower DOF?

If you use a 17mm at f/4.0 on a crop body (crop factor 1.6), in terms of field of view and depth of field, it is similar to a 27mm at f/6.4 mount on a FF body.

66
Lenses / Re: 36+ Mp EOS dSLR (rumored): How do existing EF lenses cope?
« on: February 09, 2012, 06:01:31 PM »
And yet, my 5D2(s), can out resolve my 100mm f2.8 Macro (the non L version).
I know this because i've taken duplicate shots with same lens on 30D, 40D and 5D2 (both of them).

For general portrait, i can get away with quite a bit - but once i start using it for macro, i start to notice failings that i never did when used with the 30D and 40D. I don't have the budget to upgrade to the L version, nor do i have the inclination to do Macro work to a level that requires the L, otherwise i would invest in the MPE-65 as well.

So, whilst it is clear some lenses can handle further development in the sensor MP race, others are starting to suffer - but i have no problem with this, it is the down side of technological advancement.

How many of us can play our favourite DOS game on a Windows 7 computer? (sorry, pre 1995 computer era for the children reading in  ;) )

I have no idea what it looks like when the camera out resolves the lens. The 40D is the highest MPix I've ever owned. Technically, the 5DII has about the same pixel density as the 30D. Could you please show me examples where the 5DII out resolves the 100mm while the 30D/40D does not? Thank you in advance!

67
EOS Bodies / Re: A guy used 1DX yesterday in Germany!!
« on: February 05, 2012, 08:26:13 AM »
How 18-22 Mpixel arent' going to be enough?? How big are the prints you will make?

It's nothing to do with print size. Try shooting wildlife instead of easy, controlled studio stuff, then ask again how 18-22 mps might not be enough.

More pixels means more ability to crop, in focal-length limited situations.

why not using a bridge camera with a 35x zoom and 800mm on the long end when pixel size does not matter? you donĀ“t have to crop that much.   ;D

He's saying something like: "For wildlife, given the same sensor size, more pixels is better". Why do you counter him by taking another sensor size? It just doesn't make sense to me.

By the way, his next sentence is also important, again, given the same sensor size and print size.
Oh, and more pixels does not - now, in the past, or in the future - mean more noise. Just to bury that notion before it comes up.

68
Lighting / Re: Softbox vs Diffuser
« on: January 27, 2012, 05:38:48 AM »
For outdoor portraits I use a large Rogue Flashbender (http://www.expoimaging.com/product-detail.php?cat_id=13&product_id=21), eventually combined with a Stofen diffusor. I put the flash direction behind me and shape the flashbender so that it throws the light toward the "models" (my wife or my friends). The light source is thus (significantly) bigger than bare flash. This setup works for me as it is quite versatile and easy to transport.

69
EOS Bodies / Re: *UPDATE* 5D Mark III Sighting?
« on: January 24, 2012, 09:28:18 AM »
My firmest hopes are that, if if it full frame, it is a 5DIII. Not a hybrid, a chimera of two glories kludged to mutual detriment.

The 7D mk II is a camera I have been looking forward to for quite some time now, and it must needs be asp-c! And it must needs exist, not as a hybrid, not as a ghost of what might have been, but in its full asp-c, hopefully 24mp glory!

If ever there is a 7D mkII, it will have a ASP-C sensor. Otherwise, it would not be called 7D mkII (7D X is possible, but I highly doubt that).

70
EOS Bodies / Re: *UPDATE* 5D Mark III Sighting?
« on: January 24, 2012, 09:16:04 AM »


Click here for full size (1600x1400)


Did somebody notice that the diopter adjustment is set very far back into the body? There is also some kind of "hole" left from it. The adjustment wheel should be centered, which it isn't.


http://acmaxx.net/product/canon_7d/canon_7d_top.jpg

Another design this camera takes from the 7D  ;)

71
EOS Bodies / Re: Announcement Date? [CR1]
« on: January 24, 2012, 07:37:23 AM »
Don't worry, Canon  ::)  the money saved will go toward lenses....

The 200-400mm f/4 I guess  ::)?

72
Well, did anybody buy a a new Mark III as the IV was coming out? That I imagine would be a good indicator as to wether this thing is going to go on sale anytime soon. Thanks again.
i certainly hope you are right

A bit different this time as there seems to be no direct (1.3) replacement for the 1D4, so I would guess there ill be a queue of wildlife and sports shooters wanting one

+1

Do you think that the price of used 1Ds mkIII will not drop much as it has the AF at f/8 advantage compare to the 1D X?

73
EOS Bodies / Re: The 5D Mark III Megapixel Count? [CR2]
« on: January 24, 2012, 07:17:12 AM »
With the risc for beeing called a gearhead or whatever, I will soon change to Nikon despite I have 580EX, 70-200 1:2,8L WFT and a 40D (I know it will cost a lot).
I have sold my 20D two years ago to buy a new Canon semi-pro camera which must be able to use autofocus while taking video. Sony, Panasonic and Nikon can do it . . . .   Come ON Canon, get a hold of your self.

If Canon want to keep being the leading manufactor of cameras in the world, Canon should make a camera with the following specs (will be between 1Dx and 7D (5D mrk II):

Vari-angle monitor 3" OLED or LCD 1.1 mil. pixels display (good in the sun)(protects the oled glas)
Perhaps FF 18MP from 1Dx
ISO 100-51200
The necessary numbers of DIGIC 5+
Video 1080p mode with 60fps
Build-in Stereo mic
Head phone out
Autofocus at Video and Live View
Facedetection during both Video and still
Interchangeable Focusing Screen, Rule of Thirds known as the Golden Mean or Golden Ratio.
Continuous shooting 8fps
Magnisium alloy body
Water resistant (Weathersealing)
19 AF points with 9 cross over
Both CF and SD slots
Build-in WiFi per-to-per directly to laptop
GPS

No matter the cost, I would buy IT !!! (better than change to Nikon, that would also cost).

If the specs are between the 1D X and the 7D and you'll buy it no matter the cost, why don't you just buy the 1D X ::)?

74
PowerShot Cameras / Re: Canon PowerShot G1 X Announced
« on: January 10, 2012, 06:25:31 AM »
I will not buy the G1 X. However, I am really interested in the mirrorless or rangefinder system. Wide-angles lenses on these systems are usually smaller and have less distortion than their SRL counterpart. The ideal set for me would be a rangefinder with wide-angles lenses and a DSLR for the rest. However, I do not know any real alternative to the Leica and I do not have the budget for that  :-\

75
PowerShot Cameras / Re: Canon PowerShot G1 X Announced
« on: January 10, 2012, 06:06:27 AM »
I think this camera will fail, the fuji X10 lens is a full stop faster at the wide end and 2 full stops faster at the long end! not to mention its smaller, and the fuji looks retro :P

I will try to use the explanations of Neuro on the comparison between the EF-S 17-55mm f/2.8 and the EF 24-105mm f/4:

The EF-S lens that has had some full frame users jealous for a while. 

Not the educated ones, who would know that the EF-S 17-55mm f/2.8 IS on a crop body is out-spec'd by the EF 24-105mm f/4L IS used on FF, since the FF-equivalent of 17-55mm f/2.8 is 27-88mm f/4.5 (becuase the crop factor affects aperture in terms of DoF for equivalent framing), and the 1-stop effect on shutter speed is more than compensated for bu the 1.33-stop improvement in ISO noise with the additional light gathering ability of a FF sensor).  So, the 24-105 on FF is wider, longer, and faster than the 17-55mm on crop, still has IS, and is weather-sealed with L-quality build to match.

The sensor sizes of the G1 X and the Fuji X10 are respectively 1.5" and 2/3", so the sensor of the G1 X is 2.25*2.25 larger than the X10's. The two cameras have the same FF-equivalent focal range. However, the maximum aperture range of the X10 is f/2.0-2.8. If we apply the crop factor of 2.25 to convert this to the equivalent aperture range of the 1.5" sensor, we obtain f/4.5-6.3. So the G1 X's lens on its 1.5" sensor is better than the X10's lens on its 2/3" sensor.


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