November 23, 2014, 02:00:28 PM

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Topics - dilbert

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16
Landscape / Green Flash
« on: June 17, 2014, 10:40:40 AM »
Has anyone (else) here ever captured the green flash at sunset?

18
Lenses / When does the 16-35/f4L IS arrive?
« on: June 15, 2014, 12:20:38 AM »
Anyone have any suggested or predicted dates?

20
EOS Bodies / Can Canon deliver a FF sensor that is class leading?
« on: May 15, 2014, 11:02:45 AM »
Whilst we're going to have to wait a month to find out what the distortion is like on the 16-35/f4L, the MTF graphs and samples tend to suggest it is going to be a class leading lens. And how long have we had to wait for it?!

And if Canon can do that, can it finally deliver a FF sensor that is also class leading? By class leading, I'm referring to noise control and DR that is close to linear right through the ISO range and that matches or exceeds that of Sony sensors.

What's important about it being linear? At the moment Canon sensors have a DR function that is flat in the low ISO range as opposed to Sony's which is linear: below ISO 200 (or is it 400?) there is very little gain in DR from Canon sensors whereas Sony's deliver substantial gains the lower the ISO goes. I suspect that prior to Sony's sensors coming out, people thought that the "flat area" at the start of Canon's graphs looked good because there was no degradation. What people didn't realise is that there shouldn't be any flat spots, rather the DR (colour, noise, etc) response of the sensor should be close to having a linear relationship with ISO.

22
Reviews / dpreview.com reviews Sigma 50/f1.4 DG HSM Art
« on: April 20, 2014, 01:12:52 PM »
The latest 50mm is unusually large and expensive for its type; indeed its $950 / £850 price tag suggests Sigma is aiming at users who might otherwise choose the Nikon AF-S Nikkor 58mm F1.4G or Canon EF 50mm F1.2L USM. It bears a distinct family resemblance to the company's 35mm F1.4, but if anything is slightly larger, with a 100mm / 4" long barrel and 77mm filter thread. Its complex optical formula of 13 elements in 8 groups isn't based on a conventional double-Gauss design, like most 50mm primes are, but instead is of the retrofocal type.

http://www.dpreview.com/lensreviews/sigma-50mm-f1-4-dg-hsm

... Camera used: Canon 5D Mark III

23
Software & Accessories / Google Camera App for Depth of Field
« on: April 20, 2014, 08:54:33 AM »
So it would seem that someone (Google!) has taken on the challenge of how do you make a camera phone with limited depth of field produce images that are like that with DSLRs:

http://www.hardwarezone.com.sg/tech-news-googles-new-camera-app-lets-you-add-lens-blur-your-pictures

24
Canon General / NAB 2014 and Canon
« on: April 08, 2014, 11:04:29 AM »
Have Canon made any announcements at the show this year?

25
Canon General / Warning Bells Sound
« on: February 27, 2014, 10:16:43 AM »
"Two US research companies have now published US retail sales numbers to their clients for January 2014. It does not look good for serious camera makers. Sales fell off significantly year-over-year, and steeply off from December. In fact, the steepest decline from Christmas sales I can remember."

http://www.dslrbodies.com/newsviews/warning-bells-sound.html

26
EOS Bodies / Panasonic's view of the 7D successor
« on: February 12, 2014, 08:06:07 PM »
From http://www.personal-view.com/logo/GH4_Presentation.pdf:

Sensor: APS-C, 20MP
ISO: 100-12800, 25600 (extended)
Shutter Life: 150,000
Silent shutter: Yes (slightly noisy)
AF system: PDAF, 19 area
AF detection range: -0.5 to 18 EV
Burst speed: 8fps
Recordable number: 15 (raw), 126 (jpeg)
Finger: OVF
Rear Monitor: 3.0" 1040K-dot LCD, static touch
WiFi/NFC: optional transmitter
Exterior Design: mag alloy body & splash/dust proof
Battery life: 850 images
Dimensions: 148.2 x 110.7 x 73.5
Weight (inc Battery): 910g

27
EOS Bodies / Will the next xD cameras do 4k?
« on: February 11, 2014, 06:43:24 AM »
Panasonic have announced a 4k GH4, which kind of demotes any camera only doing 1080p to the "also ran" category. Sure it is only a small sensor, but if 4k is more important than FF DOF artiness then the GH4 would seem to be a good candidate.

http://www.dpreview.com/news/2014/02/07/panasonic-announces-lumix-dmc-gh4-with-4k-video-support?utm_campaign=internal-link&utm_source=news-list&utm_medium=text&ref=title_0_8


Is Panasonic hoping that this will push the sales of (their)  4k TVs?

Will Canon hold out on the DSLRs doing 4k to protect the Cinema EOS line or will they hope that they can maintain the premiums for those cameras based on features that aren't in DSLRs, such as SDI out? Oh, oops, Panasonic's got a base for the GH4 with SDI out ... someone is innovating!

p.s. why didn't this make it to Canon rumors front page? Surely this is just as significant as the Sony A7s or has someone decided not to put other manufacturers on there now?

29
Third Party Manufacturers / Phase One use Sony sensor for MFDB IQ250
« on: February 10, 2014, 08:18:55 AM »
From:
http://www.luminous-landscape.com/essays/the_phase_one_iq250_cmos_fully_realized.shtml

It goes without saying that it is highly likely the FF DSLRs using Sony sensors (D800, D610, etc) are all using sensor technology that is either similar to or will benefit from (if not already) Son'y work here.

So in the sensor stakes, it would seem that Canon need to come up with something that is as good as the CMOS now used by leading MFDBs, not just DSLRs ...

30
EOS Bodies / Will Canon ditch the AA Filter?
« on: January 09, 2014, 07:34:52 AM »
In Nikon's latest DSLR that is available for sale, the D3300, Nikon have removed the Optical Low Pass Filter (OLPF) - also know as the AA Filter. This would tend to suggest that the reason for it being there in the first place (combating moire due to hamming) is not nearly as prevalent or significant as once thought. All of Nikon's latest DSLRs (D7100, D5300 and now the D3300) are minus the OLPF. I can't help but wonder if this will be the case for the D4s too!

Question now has to be, when will Canon stop including it in their designs?

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