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Messages - tron

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16
EOS Bodies / Re: Who is going to buy the new 5Ds's?
« on: February 04, 2015, 12:53:34 PM »
If all we get is resolution I´m out. If we get (significant) improvements in noise and DR, I´m in. I have seen enough (condescending) proof from my Nikon 810 buddy (with Otus 55/1.4) to accept that Canon has a significant challenge.

If it turns out to be FF 7DII type sensor performance, I´ll be very disappointed  and probably go for the Pentax 645z. If so, I´ll sell off a majority of my EF lenses and limited Canon to action, birds and wildlife.

I suspect we are seeing 50MP, because Canon might not be able to compete on the lower ISO DR quality front. They are over-compensating for other inadequacies.

If this thing is 16bit with massive DR, then the market will probably justify spending the money on it. Otherwise, it bodes very poorly for the near future of Canon tech, in terms of market perception.

I would only buy one of these cameras if the price was down to $3000 or less.
In that case I think I would prefer a Sony sensor in the short term but I think it is better for Canon to develop their own sensor in the long term...

17
EOS Bodies / Re: Who is going to buy the new 5Ds's?
« on: February 04, 2015, 12:50:54 PM »
Now that it looks like the cameras will be priced around $4k (as I feared), I think this will go on the waiting list

You *actually* though it'd be like the 5d3 starting price at $3.5k, even if the 5ds has the premium flagship tag attached and is lacking current competition from Sonikon? Oh my, I'd love to have part of your optimism in some parts of my life :-)

If the new Canon cameras use a Sony sensor, what will you call the new Sonikon empire?  By the way, my interest is in the "R" version.  Before I invest in the 11-24, I plan on using my Nikon to Canon adapter for the Nikon 12-24mm lens which I know is hot stuff and testing the D810 vs the "R".  It will be interesting to see what the extra MP's do with my 36x24 prints (if any).  I too am interested in whatever dynamic range improvements this might mean (if they use the newer sony sensors I expect quite a jump - lower ISO like the D810?).
Hmmm. let me try first:

1. CaSoNikon.
2. SoNiCanon
3. SoCaNikon

 ;D ;D ;D

18
Lenses / Re: EF 11-24 f/4L USM Specifications
« on: February 04, 2015, 10:25:12 AM »
This lens is giving me G.A.S.  I will be selling my 14mm f/2.8L II very soon...
For astrophotography 2.8 cannot be beaten.... Other than that I agree...

no, that's nightscapes.  Astrophotography is an exacting photographic discipline all in itself that most would laugh at the thought of doing unguided photographs.
If you read the previous posts you will see that I have explained later that I meant landscape astrophotography... so yes nightscapes basically...

19
EOS Bodies / Re: Who is going to buy the new 5Ds's?
« on: February 04, 2015, 08:40:35 AM »
Not me! All I want is a 5DMkIV with the same Mpixels as 5DMkIII with better high and low ISO performance, 8 fps and much better DR (maybe using the Canon Dual-Scale Column-Parallel ADC Patent...).

20
Lenses / Re: EF 11-24 f/4L USM Specifications
« on: February 03, 2015, 04:55:36 PM »
This lens is giving me G.A.S.  I will be selling my 14mm f/2.8L II very soon...
For astrophotography 2.8 cannot be beaten astro-tracker cannot be beaten as even f2.8 and high ISO won't print worth a damn.... Other than that I agree...

There, I fixed it for you. :)
Even a well made cheapo barn door tracker is vastly better than f2.8 static. Printing is abysmal even with a FF sensor and f2.8 or faster lens set at 30 seconds or slower.

I do have astro tracker. Rumor has it that the landscape (forground) part of the photo gets blurred when using it though  ::) ::) ::)

You can move the camera position from one shot to the next. Don't be stuck with thinking your tripod needs to be in the same place for foreground and background. If you worry about parallax error with objects light years away, then I don't know if there is any helping you get better shots. :) :)

That's just the reality of astro landscapes and being able to print well. Static single exposures just don't cut it with current technology.
I have thought too of blending 2 photos into one. Forground shot at lower ISO with many minutes exposure and background (stars) with astrotrac also at rather low ISO and many minutes exposure (I have already done that for a pure galaxy shot). But I feel this as being a little cheating. I generaly use my 5D3 at ISO 10000, shoot at 25 sec (14mm) at 2.8 and get decent results. The most difficult problem is to avoid car headlights from aside. The bulb element of 14mm does not help a lot so I dream of a new coma free 16-35 2.8 lens with a flat element that will take hood just fine.

But yes I will try blending this summer.

I use this method for doing daytime focus stacking, when bokeh fringing becomes a problem. It works really well! Just use the foreground shot to align the BG where it needs to be to be realistic. I don't see that as cheating, as much as being clever and one-upping the competition. I've been told by countless people that it's impossible to avoid bokeh fringing, when they have the mindset that the camera must never move. For my focus stacking, I will crank the tripod column up to get it over flower and stuff that are causing the fringing in the focus stack. :)
A trick that I think is halfway between the two (and does not require tracking) is to take a shot of the whole scene just with tripod and another one of the foreground using lower ISO (and longer exposure of course). Then I guess  the cleaner foreground can be superimposed in a front layer.

21
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: February 03, 2015, 12:02:09 PM »

KR says: "12 channel parallel readout."

He also says 1080/60p, 7 FPS, ISO 100-16,000, and some other stuff that doesn't match any of the other rumor sites. Shrug, it's all guesswork at this point.
7fps (for full frame mode) would be nice but I do not believe it even for a dual digic 6!

22
Lenses / Re: EF 11-24 f/4L USM Specifications
« on: February 03, 2015, 09:20:45 AM »
This lens is giving me G.A.S.  I will be selling my 14mm f/2.8L II very soon...
For astrophotography 2.8 cannot be beaten astro-tracker cannot be beaten as even f2.8 and high ISO won't print worth a damn.... Other than that I agree...

There, I fixed it for you. :)
Even a well made cheapo barn door tracker is vastly better than f2.8 static. Printing is abysmal even with a FF sensor and f2.8 or faster lens set at 30 seconds or slower.

I do have astro tracker. Rumor has it that the landscape (forground) part of the photo gets blurred when using it though  ::) ::) ::)

You can move the camera position from one shot to the next. Don't be stuck with thinking your tripod needs to be in the same place for foreground and background. If you worry about parallax error with objects light years away, then I don't know if there is any helping you get better shots. :) :)

That's just the reality of astro landscapes and being able to print well. Static single exposures just don't cut it with current technology.
I have thought too of blending 2 photos into one. Forground shot at lower ISO with many minutes exposure and background (stars) with astrotrac also at rather low ISO and many minutes exposure (I have already done that for a pure galaxy shot). But I feel this as being a little cheating. I generaly use my 5D3 at ISO 10000, shoot at 25 sec (14mm) at 2.8 and get decent results. The most difficult problem is to avoid car headlights from aside. The bulb element of 14mm does not help a lot so I dream of a new coma free 16-35 2.8 lens with a flat element that will take hood just fine.

But yes I will try blending this summer.

23
Lenses / Re: EF 11-24 f/4L USM Specifications
« on: February 03, 2015, 07:34:36 AM »
This lens is giving me G.A.S.  I will be selling my 14mm f/2.8L II very soon...
For astrophotography 2.8 cannot be beaten astro-tracker cannot be beaten as even f2.8 and high ISO won't print worth a damn.... Other than that I agree...

There, I fixed it for you. :)
Even a well made cheapo barn door tracker is vastly better than f2.8 static. Printing is abysmal even with a FF sensor and f2.8 or faster lens set at 30 seconds or slower.

I do have astro tracker. Rumor has it that the landscape (forground) part of the photo gets blurred when using it though  ::) ::) ::)

24
Lenses / Re: EF 11-24 f/4L USM Specifications
« on: February 02, 2015, 04:44:02 PM »
This lens is giving me G.A.S.  I will be selling my 14mm f/2.8L II very soon...
For astrophotography 2.8 cannot be beaten.... Other than that I agree...

25
EOS Bodies / Re: The most important feature missing from the 5Ds/5DsR is...
« on: February 02, 2015, 01:28:06 PM »
Assuming all specs are correct, I wish 5ds series had minimum ISO 64 instead of 100. And probably it's just for me but I wish it had integrated grip like 1d series... But regardless of all of that I'm sure the 5ds cameras will be brilliant!
An integrated grip - ok, together with a set of buttons instead of a wheel - would make it a series 1 camera. But being a 5 series camera may allow the ML team to add functionality sometime in the future.

26
Third Party Manufacturers / Re: Review: Zeiss 15mm f/2.8 Distagon
« on: January 27, 2015, 12:26:30 PM »
I have no interest in this Zeiss lens however. TDP even mentions the Zeiss some has coma, not ideal for stars. I heard the Samyang has one up in this regard.
Actually, the Zeiss has very little coma, except in the extreme corners. Even then, it's not much. That's the main reason I bought the Zeiss (for star pics), after hiring and testing a couple of other lenses (a Canon 24mm f1.4 and a Zeiss 21mm). Plus the hard infinity stop makes distance shooting easy, day or night.

I strongly suggest the following 2 links for people who want to check coma.

Comments like no coma or not much coma are next to useless if someone thinks about buying this lens for astrophotography. It is not a 400$ lens...

http://www.trichardsen.com/blog/zeiss-15mm-f28-distagon-review

http://www.the-digital-picture.com/Reviews/Zeiss-15mm-f-2.8-ZE-Distagon-Lens-Review.aspx

Also quoting Brian from TDP:
Quote
An interesting image quality note is that my Canon EF 14mm f/2.8 L II USM Lens produces images 1/2 to 2/3 stops brighter than the ZE 15 using identical settings under a clear sky.

27
EOS Bodies / Re: EOS 5D Mark III Replacement Talk [CR2]
« on: January 26, 2015, 07:42:31 PM »
Maybe I'm in the minority here but I think Canon should call the new high MP full frame the 'EOS 3'.  Forget about 5DS....just go with EOS 3.  The film version hasn't been made since 2007 and the 'D' moniker is pointless as everyone already knows it's a digital camera.

and what about a FILM camera..?    I'd use it professionally along with my other cameras

Just call it a Canon EOS 3D, anyone who is in the market for one will know it's a model number not a stereoscopic camera. The potential for confusion, among those who actually matter, is very low.

Yes but how many times will you be asked if you need 3D glasses to go with it before you scream  :o  ;D
How about EOS 2D?  It will sound rather flat but it will keep hopes high for a future 3D  ;D

28
EOS Bodies / Re: Big Announcements Coming Next Week [CR3]
« on: January 26, 2015, 07:29:57 PM »
 I am not interested in a 50+ Mp camera. But any news = good news because it means something is going on.

So I guess no more than a year for 5DMkIV (similar Mp, higher DR, less Low and High ISO noise, just hoping... )

Now the new lens is interesting...

29
EOS Bodies / Re: 50mp Cameras Coming in March [CR1]
« on: January 24, 2015, 01:07:59 PM »
I prefer my 44Mpixels (two 5DMkIII cameras  :D :D :D :D )

30
EOS Bodies / Re: High Megapixel Camera Coming in 2015 [CR3]
« on: January 21, 2015, 11:00:04 AM »
Image Quality is about how clean the image is, how well colours are reproduced, etc. Low noise and high DR contribute in a very direct fashion to IQ.

That is part of it.

As has been pointed out before, but really shouldn't need to be, there are other aspects to image quality too. Like if the subject is in focus. Indeed, in many circumstances, that is as important as noise. I'm not the first to say, though I will repeat - moderate noise can be reduced by software, but a subject cannot be made to be in focus with any postprocessing technique if it was not so in the original image.

Focus has no bearing on the image quality - only the clarity with which subject of the image is captured. An out of focus bird at ISO 25,600 is just as noisy (image data wise) as an infocus bird at ISO 25,600. Focus cannot correct image quality issues.
It should be obvious though that lack of focus has a negative impact to IQ  ::)

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