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Messages - Rocky

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EOS Bodies / Re: 1Ds Mark IV Feature
« on: October 19, 2010, 11:58:47 AM »
Bayer sensor is 2 green, 1 red and 1 blue as a group. How can you bin 3 color in 4 pixels ???  People tends to confuse down sizing with pixel binning.

Simple - you average the output of the two green pixels.
How about the red and the blue?? you cannot just average  one color without doing anything to the other 2 color.

EOS Bodies / Re: 1Ds Mark IV Feature
« on: October 19, 2010, 11:04:28 AM »
Proper pixel binning has huge ramifications for video.

Also huge for stills, especially with a high pixel count sensor.

It means massive sensitivity (ISO) at low noise.
PIXEL BINNING is not possible to be done at "raw" level for Bayer sensor. No camera maker dare to mention "pixel binning" except Sigma(they are using Foveon sensor). Bayer sensor is 2 green, 1 red and 1 blue as a group. How can you bin 3 color in 4 pixels ???  People tends to confuse down sizing with pixel binning.

EOS Bodies / Re: 1Ds Mark IV Feature
« on: October 19, 2010, 01:04:40 AM »
A 35MP FF sensor is about the equivalent of a 13.6 MP APS C sensor.  I'm pretty sure there is no problem with almost all, if not all resolving a sensor like this.
Almost all consumer  grade lens from Canon will run into problem at FF with 35MP. Remember, with APS-C sensor, we are only using the middle of the image field (best performance area)of the lens. With FF we  are using the full frame (image field) of the lens. Even some L zoom lens will get into trouble for that. just look into lens test reports from slrgears.com. Some lens with very good result in APS-C sensor becomes unacceptable in the FF sensor.

EOS Bodies / Re: 1Ds Mark IV Feature
« on: October 19, 2010, 12:54:30 AM »
Aah. Somebody's been wet-dreaming again.

Pixel-binning and weak/missing AA filter are technical characteristics that have no appeal for real photographers - just for the techno geeks that came up with this lame rumor. 


Au contraire.

It's been noted in various photography forums that the Leica M9 with 18MP delivers a picture that exhibits finer detail than do any of 1Ds3 (21MP), 5D2 (21MP), Sony A900 (24MP) and Nikon D3x (24MP).

But maybe your "real photographer" doesn't use high end equipment like professionals do.
M9 got better picture is due to the combination of the following three factors (in order of importance): 1. Much better lens than Canon, Nikon or Sony. 2. Better DSP. 3. Removal of AA filter ( with the potential of Moir under certain condition)
As for Leica being used by professionals, this can be a very interesting situation. Leica is being used mainly by high end enthusiast with a deep pocket. A very small percentage of professional will use it. the reason is due to high price for the body and the lenses. Also even it can be used up to 135mm focal length, it is already a pain in the butt,  due to small frame in the view finder.  So the usable focal length is from 21mm to 90mm. You cannot use it for closeup, period. How many professional can live with  these limitations???

EOS Bodies / Re: Canon 60D v. Nikon D7000
« on: October 07, 2010, 01:07:52 PM »

Overall my impression is that this is a fantastic upgrade for Rebel users and beginners, but far too limiting for those who aspire to do more. Due to the lack of essential "pro" features then I wouldnt even recommend this as a 2nd body. As much as I wanted to love the 60D then I'm reluctantly going to move on to the 7D or D7000. They're both fantastic cameras but both also will cost me more than I budgeted so hopefully I make the right decision in the next 2 weeks.

very nice summary. I am still torn between the 60D and the 7D. can you tell me what are the "por feature" that is missing on the 60D??  I know that 7D has the micro focus adjustment, more auto focus points with grouping, and the metal body that the 60D lacks. On the other hand, I like the tilt screen of the 60D. I do not care about any video related feature. Thanks for the advice in advance.

EOS Bodies / Re: Photokina 2010 Report
« on: October 01, 2010, 03:45:40 AM »

The 60D's autofocus is its own beast.  It has fewer AF points than the 7D (9 cross-type compared to 19 if memory serves), but, like the 7D, the center one is "additionally sensitive at f/2.8 or faster," which wasn't the case with any previous non-professional (not the 7D, not the i.e. the 1D / 1Ds series), affordable camera.  The autofocus points also may be a different size, which has its own repercussions.

60D has the same focusing system as the old 40D and the 50D. 9 point all cross ,with extra sensor for lens faster than f2.8 at the middle sensor.

EOS Bodies / Re: The Leica M9 Experience
« on: September 29, 2010, 01:49:42 PM »
Hi ,

Great article!!  Thanks.  Am really looking for a full sensor canon EVIL with m- mount adaptor.  For me this would be ideal.  No huge payment for a M-9 body that will be outmoded by an improved model in the relative hear future (relative to the length of time I'd be owning the Leica or Zeiss or Voitlander lenses).    I love the comments about simplicity and ease of transport of gear.

one person referred to the need to take off glasses while looking into the viewfinder of the M-9.  I am in that category.  My diopter is 2.5 right now.  Pardon my ignorance of the rangefinders but......   if I were to be wearing the correct diopter glasses (or glasses that are over magnified like a diopter 3.0 to be used only when using the camera), wouldn't this auto correct the focusing problem allowing me to focus accurately using the rangefinder???

thanks to anyone with experience along these lines.

I have been using a M4 for more than  40 years. I am a glasses wearer. I have never have any problem using the view finder or the range finder. It does not have the same amount of eye releive as the modern DSLR. you should try it out yourself.

EOS Bodies / Re: Canon Announces EOS 60D
« on: September 23, 2010, 02:02:38 PM »
I should have a more detail on the diffraction effect before some one jumps on me. In reality, the diffraction effect is always there (from the size of the lens aperture). For the lower Mp sensor, It just cannot resolve the diffraction effect. For high Mp, the effect will show up due to higher resolution. We can down size the High Mp picture to "eliminate" the effect.  But then, we will end up with a lower Mp picture

EOS Bodies / Re: Canon Announces EOS 60D
« on: September 23, 2010, 01:49:51 PM »
Part of the reason (may be problem) of people thinking about switch Camera maker (or even switch new body within the same band) is that cameras are relatively cheap. In the '60s, a good camera cost almost as much as one month wage and people stick to their camera for 10, 20 years. Nowadays people always want the newest model. I stress the point want, not need. Let us be honest to ourselves, does the 40D really give us a better picture than the 20D? Or does the 7D really give us a better picture than the 50D?? I am talking about prints, not pixel peeping. Especially now that the resolution of the sensor demands the best prime lens. Even that we need to beware of the diffraction effect. Granted that each newer model give us more feature that we want, but how many of them do we really need ?? Nowadays, camera makers try to out done each other. It becomes an endless chase for us.

EOS Bodies / Re: Fujifilm FinePix X100
« on: September 20, 2010, 04:01:58 PM »
No offence.... but stick to Canon posts.... all the rumor sites are starting to take from each other and it is beginning to get pointless to click through 4-5 sites all reporting the same stuff.

You have a niché site... keep it that way.

Ease up... and it's niche, not niché...

No offense. Great post. But just wondering, if that is the philosophy of CR, next up is Nikon new releases?

I would think anything other than Canon will not be showing up here, this aint rumor equivalent of DpReview, is it?
CR is right about posting the Fujifilm FinePix X100. It is a very unusual camera.  It is a great fill-in article for lack of real Canon rumors. Also CR has the sense of just doing a brief mentioning rather than going into great deatil ,like the DPReview. So reader knows it is there, If you want more information (people like me) you can go to find it in another site.

EOS Bodies / Re: Fujifilm FinePix X100
« on: September 20, 2010, 01:02:19 PM »
Check out this site.It got a lot more detail.

It is a beauty and a photographer's camera.

They could put a Leica M mount on it on the next generation and give Leica M9 a run for the money.

EOS Bodies / Re: Fujifilm FinePix X100
« on: September 20, 2010, 12:29:11 PM »
Check out the interface (the cleave line) on the prism (beam cube).  It's backwards.  It's a "theorist beam splitter."  ;D

The drawing is right. It is not a light splitter. It is a "combiner" . Either the light from the bright frame or the LCD is combined with the light from the view finder window(scenery) and reach your eye.

EOS Bodies / Re: Canon 60D v. Nikon D7000
« on: September 19, 2010, 08:08:06 PM »
I decided to take the $2,000 limit challenge. Here is what I came up with.

Canon T2i w/kit lens: $900
Canon 55-250mm EF-S zoom: $230
Vivitar DF383 Strobe: $130
Protective Filters/Cards/Camera Bag: $300

Personally, I would not recommend this lens for a one lens outfit. 1. 55mm for a  ASP-C camera becomes 88mm focal length. The owner will be using tele-zoom lens all the time.  What happen when group shots, scenery shot are required. 2. That is the kit lens that my friend is complaining about the noise in focusing that will over power the conversation. 2. Most of the people that use the DSLR for video  are mainly for family affair, parties etc.  It will require a wide angle lens of minimum of 35mm equivalent focal length.

EOS Bodies / Re: Canon 60D v. Nikon D7000
« on: September 19, 2010, 06:29:58 PM »
Now, a word to my fellow forum readers. I hope you'll rise to the challenge and put together your own $2,000 package for this upgrader. If you can do a better job or have constructive recommendations that fit within the confines he or she has provided us, have at it. I'm not particularly interested in reading nitpicking comments from trolls, but if that's your thing, so be it.
May I add that the people that will rise to this challenge should have also used the DSLR for video (hopefully extensive and speak from their own experience.

EOS Bodies / Re: Canon 60D v. Nikon D7000
« on: September 19, 2010, 02:35:03 PM »
My budget is now around $1500-$2000, which I plan to spend on a good camera (with video shooting feature) plus only 1-2 lenses.

Right now I'm leaning toward the Nikon D7000 as its features look promising and will allow me to learn almost everything I need to know about photography.  As for the lenses, I'm thinking about 18-135 or 18-200 instead of the kit lens (I want some telephoto), and probably something for the portrait shots. (35 or 50mm/f1.8???). Within my tight little budget, I might be able to only get one lens at the moment.

A friendly advice from a second hand experience. I have a friend shooting video with the T2i with the kit lens. he told me that the noise from the focusing of the lens is loud and can overtake the conversation. So if you are aiming at video, you need lens with both USM and IS. For me the ideal lens from Canon for video on APS-C camera is 17-55mm f2.8 with both USM and IS. It will be about US$1100. Speaking of USM. Please make sure that you got the RING USM, not Micro USM.

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