Messages

361

EOS Bodies / Re: Eos 1Dx and 5D mark III / 5 Dx tonight

« on: February 07, 2012, 11:44:56 AM »

... You can also spot a new model just by looking at the pixel dimensions.  Each sensor has different dimensions.  You might crop to 1D MK IV size, but it would be pointless...

1D X has the same image resolution as 7D.

I saw somewhere on forums 2 post-processed images of the same subject shot using 5D original and 400D and there was no difference at all. Nobody could tell what was the camera that was used for each of those.

362

EOS Bodies / Re: 1D X high res samples just appeared

« on: February 07, 2012, 08:24:35 AM »

Another thing that astonished me was that all sample shots were made at Auto WB setting. If you look on samples of other recently released models (Nikon's for example), you'll be able to see that WB of those was set manually to some XXXX Kelvin value.

If these 1D X examples are straight from the camera it means that it becomes much easier to handle colors and easier to post-process (or post-processing might be not even needed for some areas of photography). WB might have been configured in-camera though, as Canon's added some editing functions inside of it 

363

EOS Bodies / Re: 1D X high res samples just appeared

« on: February 07, 2012, 08:04:06 AM »

Check the second protrait's background noise, not as good as I expected.

the second one sucks.... it´s not very sharp either. not a good example imho.

Exactly~How come they can use this as the offical sample!! And the model is not as pretty as Nikon's 

Here's a Nikon D4 image example shot at ISO 100 and it's not even close for me to those ISO 400 / 800 examples from 1D X taking into account look and feel of the images. I know it depends on personal taste, but I don't think ISO is the only thing we should pay attention to.

The ISO 1600 image is blurry and it looks like a shot with focus-error (may be front-focus due to recomposing after focus lock, for instance), however if you make it smaller it looks fine: resized sample of ISO 1600 shot and the grainy background even at 100% crop looks almost the same as in ISO 100 shot above made on D4.

364

EOS Bodies / Re: 1D X high res samples just appeared

« on: February 07, 2012, 05:07:02 AM »

It looks like all images are straight from the camera, shot in JPEG with WB set to Auto. Please correct me if I'm wrong.

365

EOS Bodies / 1D X high res samples just appeared

« on: February 07, 2012, 04:42:40 AM »

Check this out: http://web.canon.jp/imaging/eosd/samples/eos1dx/

366

EOS Bodies / Re: 7Dx

« on: February 05, 2012, 04:51:53 AM »

Canon EOS 1v, released in 2000, was the last Canon's professional film camera, where "v" represented 5th generation. Four generations of 1D series and you get 1D X as the 10th generation

367

Lenses / Re: What about DxO Mark?

« on: February 03, 2012, 08:37:44 AM »

It's also interesting to know whether or not DxO sensor ratings is something we should be guided by. If you compare new APS-C sensor ranks even with current full-frame sensors, new ones will have better performance: DxO Mark Sensors Comparison: Sony NEX-7, Nikon D7000, Canon 5D Mark II

Can someone explain me what's happening? Is this an improved technology used by all manufacturers (Nikon, Sony, Pentax) or some kind of hack (algorithms applied to RAW files in-camera) manufacturers use to make their images look better than they initially are?

368

EOS Bodies / Re: Canon 1D-X: "Full" 2-Stops ISO Improvment...only in JPEG??

« on: January 29, 2012, 10:31:12 AM »

If I turn on NR in my camera I see difference even in RAW images. I used Irfan View to convert them from RAW to JPEG format and here's what I've got when ISO was set to 12'800.

If Digic 5+ is so powerful comparing to Digic 4, we might see similar NR applied in 1D X image processing, but without blurring the image. Or am I missing something?

P.S. I shot painting on my wall to compare RAW image noise.

369

Third Party Manufacturers / Re: Nikon's D4 Outed Officially

« on: January 05, 2012, 11:55:01 AM »

I've used translator to grasp the meaning of the article above, here's what it gave me:

Sensor: CMOS 16 MP FX format (24x36 mm)
Sensitivity: 100 to 12800 ISO (ext. 50 - 204 800)
Autofocus: 51 points
Viewfinder: pentaprism, 100% coverage, 0.7x magnification
FPS: 10 to 12 frames / second
Measurement: 3D Matrix II Color 91000 points
Screen: 8.1 cm
Video: Full HD 1080p
Memory cards: CF / XQD
Dimensions / weight: 160x157x91 mm / 1.34 kg
Price: € 5800

Everyone was waiting for the successor of the semi-pro D700 and the pro SLR D3s which will be replaced in February. The quantities required are not commensurate with those of the future "D800" that will address a much broader customer base. However, the D4 is one of really good news, and will return investments to the business of Nikon.

Reasonable resolution

The D4 replaces D3s of 2009 that was an evolution of the D3 released in 2007. The version of "rich-pixel" D3x, which appeared in 2009, is currently in the queue, waiting for possible "D4x". Rather than the image resolution, the main aim of D4 is sensitivity and speed. The new FX-format sensor (24x36 mm) that adopted 16 MP, is far from being unique these days when even amateur models can exceed 20 MP. But it is a figure that makes you more comfortable than 12 MP in D3s, and considered sufficient for reporters. Advantage of the less amount in photosites is that they perform better: the sensitivity is from ISO 100 to ISO 12800 and goes up to 204 800 ISO in extended mode! The ISO range is limited by default to ensure a relatively quick process in burst that is announced to be 10 frames / second (instead of 9 frames / second of the D3s).

The fastest of all?

The unit will go up to 11 frames / second at full resolution, but without focusing after the first shot, and even to 12 frames / second in DX image format (8 MP). The shutter system (mirror included) has now reached a 400,000 life cycle. Considering the burst shooting speed D4 is the Nikon's fastest device ever made. Nikon states that the sensitivity of the focus points was improved, even if you work with teleconverters. Moreover, the selection and display of AF points have been simplified, as we have seen in the grip. On the other hand, the autofocus is supported not only by a brand new EXPEED processor, but a brand new 91 000 points measuring sensor. At this level, it's a real small image taker able to determine precisely the type of scene and location of the subject. The Nikon D4 is the first device capable of performing face recognition without using the main sensor, and thus reflex. We tested this successfully. An effort was also made on the reactivity of the AF contrast detection. The video feature lovers will also benefit – Nikon has clearly put their efforts in video in an attempt to gain the field largely monopolized by others.

Rival in size

Announced last November, but out in March, the new pro SLR Canon EOS-1DX will be the only rival for the D4. On paper it looks better (18 MP sensor, 61 AF points, maximum default sensitivity up to ISO 51200, 0.78x viewfinder, FPS of 12 to 14 frames / second ...), but it is known that the duel of the titans will be played on the ground according to their ability to capture the right image! The price of the Canon, still unknown at the time we loop...

See you next month for a full test!

P.S. Few sentences were removed, because they were meaningless after translation. Also I've rephrased some of those that were left to make them easy to read. Don't blame me for my poor English 

370

EOS Bodies / Re: Canon 1D X High ISO shot preview

« on: January 01, 2012, 06:15:58 AM »

After a short investigation I've found few more examples of high ISO shots.

Here's how 51k ISO JPEG image made at "S" quality looks at 100%:

׎,	Small | Large

(time 2:24)

Here's 51k ISO image taken at "L" quality:

Û½l	Small | Large

(time 4:31)

371

EOS Bodies / Canon 1D X High ISO shot preview

« on: December 31, 2011, 02:15:37 PM »

I've just spotted a short review of 1D X on YouTube where high ISO shot was shown on the camera screen. It's hard to tell the difference between the test shot and today's cameras performance, however if the image was taken at 204k ISO, it looks ok for me:

×],	Small | Large

372

Canon General / Re: Lens Focusing

« on: December 29, 2011, 01:55:20 AM »

Hi John,

I believe there's nothing you can do to break the lens or camera body if you treat them carefully. I.e. don't drop or put it into sand / water and everything will be ok 

373

Lighting / Re: Color temp of pictures using flash

« on: December 26, 2011, 08:37:01 AM »

Im sorry to be out of topic here, but what strobe technique is this? This is amazing! I cant think of what the WB would be if what the flash fires is blue and the natural light is orange 

The photo is not mine, but I guess they used external flash behind the tree (got it from shadows' direction) and made the shot with a relatively long exposure (such as 0.3 seconds). Long shot retrieved ambient light of 2 different color temperatures (cold and warm) and then flash added details in the middle with its own temperature (flash was triggered with the second curtain, added a moderate color temperature). I see a lot of post in the shot though (colors / contrast correction, tilt-shift simulation). This photo may be combination of several different shots.

374

Lighting / Re: Color temp of pictures using flash

« on: December 26, 2011, 04:36:48 AM »

I am trying to practice using my flash some more.  I use manual settings, and the exposure meter seems to be pretty worthless when using a flash.

It seems that you've not configured your camera and flash properly. To identify the problem we need all information about your set-up (e.g. camera / flash configuration, where flash is located, sample photos).

The simplest thing you could do with your flash at home is to set your camera to Manual mode and set shutter speed / aperture / ISO to get -2 value in your exposure. Then switch your flash to E-TTL mode and turn your flash head to look at your ceiling.




That's all for the set-up, make photos:



You can read about this technique here.


Here's a good example where external flash was used:



It was triggered wirelessly and some kind of diffuser was set in front of the flash head.


P.S. Color temperature is not something you can easily control on your camera, because your flash outputs light of different temperature compared to ambient light. If your problem is localized in color, you should think about color gels for your flash.

375

EOS Bodies - For Stills / Re: High-ISO Noise Performance of the 1100D ?

« on: December 24, 2011, 02:05:36 PM »

I think that's ok as far as 1100D has 20% bigger pixels than 7D. The noise level of both cameras is almost equal if you compare overall image.

Even if you compare IQ of 5D Mk II which has 23% bigger pixels with 1100D on pixel level, there won't be a big gap in high ISO performance. 5D Mk II has noticeable improvement in image quality due to bigger sensor and that's all.

P.S. Information about pixel size taken from here.