sleibson

sleibson

Lives in United States Silicon Valley, CA, United States
Works as a Technical Marketing
Has a website at www.hp9825.com
Joined on Apr 20, 2006
About me:

Shooting with Canons for 40 years

Comments

Total: 11, showing: 1 – 11
In reply to:

brendon1000: Sigh. One more case in point to avoid third party lenses for cameras.

Canon has changed the focusing systems in its dSLRs many times in the past decade and a half: 9-point sensor, 19-point sensor, 60% phase coverage in the image sensor on the SL1, and full phase coverage on the 70D, just to name some I'm familiar with. They also have at least three lens-focusing drive systems: micromotor, USM, STM. Every time Canon engineers come up with a new sensor or focus-drive, they're likely to discover a new way to drive the lens-focusing interface using the full internally documented spec. It takes a lot of reverse engineering for a 3rd-party lens manufacturer to figure this out. That they do is a wonder. That they sometimes get caught in a corner case they didn't figure out is not a surprise. The most well-known case is Canon's change from film to digital EOS bodies that left Sigma lenses generating error codes in the new digital bodies. Some lenses could be re-chipped. Some could not. As a result, I'm only buying Canon lenses these days. Been caught before.

Direct link | Posted on Jun 30, 2015 at 14:03 UTC
On Interview: Canon's Chuck Westfall on the new XC10 article (347 comments in total)

I saw this camera last week in the Canon booth at NAB. I also watched a 15-min 4K film made with this camera. It was a chase film with lots of Parkour running and jumping through an urban landscape. The filmmaker waxed enthusiastic about the camera's DR and hand-holdability. The filmmakers also bolted this camera to a drone and flew above the actors running across rooftops. They got a bit more than 10 minutes of flight time. It's a relatively big drone, much bigger than you use to fly a GoPro.

I also handled a pre-production version of the camera. I'm accustomed to dSLRs and my G12. This is a big camera by comparison but my cameras don't shoot 4K video, they shoot HD. This camera feels pretty big in my hands, but again I'm not used to hand-holding cinema or pro-video cameras. It's certainly smaller than the Canon C300. I felt that the lens didn't turn as smoothly as I'd like, but that could be chalked up to the pre-production status of the sample I held. Also, manual zoom only.

Direct link | Posted on Apr 24, 2015 at 00:30 UTC as 84th comment | 1 reply
On Canon EOS 5DS / SR First Impressions Review preview (3412 comments in total)

Clearly a studio-oriented camera where you have controlled lighting and the workflow to support the large files. I expect that these new 5D variants will do well there. Canon devoted a large portion of its booth at last year's NAB show to a studio workflow setup.

Direct link | Posted on Feb 7, 2015 at 18:00 UTC as 507th comment
On Starstruck: Adam Woodworth's nighttime photography article (60 comments in total)
In reply to:

TLD: Beautiful images. It really makes you want to go out and try yourself. Unfortunately, I doubt it's as easy as Adam makes it appear.

Thanks for the link! A great article with good technical details.

Direct link | Posted on Dec 25, 2014 at 15:51 UTC
On Pentax launches K-S1 Sweets Collection article (231 comments in total)

Ooooh, these are so purty. Kidding aside, there's method to Pentax's madness here. A marketing maxim is not to give a prospect a "yes/no" choice but a "which one do you like best" choice. It works every single day for cars. It will work for cameras. It won't work for the majority of DPR readers, who worry bout how many angelic shadows can dance on the darkened head of a pixel, but it will work for the much larger audience concerned with "Teal is my favorite color! I'm a San Jose Sharks fan." This is the same audience that will never augment the camera with a second lens. The kit lens is fine, thank you very much.

Direct link | Posted on Oct 22, 2014 at 23:45 UTC as 97th comment | 1 reply
On Canon EOS 7D Mark II: A professional's opinion article (502 comments in total)

I was happy to see this review because it has the ring of truth to it. This pro photographer brings her biases to her review, just like any reviewer. She is a full-frame shooter. She has a color preference. She knows what she likes and what she doesn't like. I found her review of the 7DII very credible based on that. She noted the fast AF and the fast burst speed. She noted controls she didn't like. She also noted how she sets the camera up for her work. In all, this is as informative a working review of a camera as you can hope to get and I appreciate the even-handed, easy-to-read tone.

And no, Canon didn't pay me to write this.

Direct link | Posted on Oct 22, 2014 at 22:11 UTC as 125th comment | 3 replies
On Beyond the ordinary: Tim Dodd's Everyday Astronaut article (102 comments in total)

Have Spacesuit Will Travel.

Direct link | Posted on Jul 6, 2014 at 03:57 UTC as 24th comment
On Kodak reborn: A look at JK Imaging's 2014 lineup article (198 comments in total)

Looks like they're planning to compete is several established, currently successful markets like Micro Four Thirds mirrorless interchangeable lens cameras and GoPro competitors. More power to them. I hope these products deliver on their promise and on the name Kodak. Pricing and marketing will largely determine the success of these products. I suspect they won't be bought by people spending a lot of time studying their specs.

Direct link | Posted on Mar 22, 2014 at 15:19 UTC as 45th comment
On ICBM in the NUKES challenge (5 comments in total)
In reply to:

itchhh: Great photo! This looks like a Minuteman III.... How did you come to get this photo especially in Tucson AZ?

Yes, that's the Titan Museum. The missile inside is a training missile that was never flyable. It took a special deal with the USSR to arrange to make a museum from this missile silo. All of the other Titan silos were filled in as part of an arms-limitation treaty. The missile port must always be partially opened to allow for satellite inspection. Also, this silo was used in the Star Trek movie Star Trek: First Contact. The Titan missile doubled as Zephram Cochran's first human-built, warp-capable spacecraft.

Direct link | Posted on May 5, 2012 at 02:51 UTC

Many thanks to the author of this fine book. It's an inspiration on many levels and will help many photographers get better images, even if their safari takes them only to their back yard.

Direct link | Posted on Dec 11, 2011 at 16:28 UTC as 179th comment
In reply to:

W5JCK: A PDF is NOT an eBook. An eBook is in a format that is readable on electronic reader devices like the Kindle, Sony Readers, Nook, et cetera. For example, a format like MOBI or ePub. A PDF is just a crappy, bloated, antiquated format developed a generation ago by Adobe to allow the secure transfer of documents designed to be printed.

Funny, I depend on downloading and using the information in PDFs nearly every day. Also, I've paid for a few eBooks in PDF format so it's a shame to find out they don't really exist. In other words, it's the content not the container that's important to me. PDF containers seem to work fine for nearly everyone in the world except perhaps for the late Steve Jobs and the author of this comment.

Direct link | Posted on Dec 10, 2011 at 16:12 UTC
Total: 11, showing: 1 – 11