marsbar

marsbar

Lives in Canada Vancouver, Kitsilano, Canada
Works as a I work!
Joined on Jun 28, 2005
About me:

Serious amateur photographer.

10-years experience with 35mm Film SLR, Digital SLR, and P&S digital.

Comments

Total: 13, showing: 1 – 13

16mm.. @ f/2.0 !! :D If its sharp, that would be awesome for astrophotography!

Direct link | Posted on Jun 14, 2013 at 09:43 UTC as 17th comment | 1 reply
In reply to:

offshore13: was this a self portrait or is there someone or some marsian taking the picture? I'm just curious where the camera connection is

MAHLI was tha camera used to take the image:
http://mars.jpl.nasa.gov/msl/missions/images/MSL-payload-fi.jpg

This high res image shows stitching misalignment near that area of the rover:
http://photojournal.jpl.nasa.gov/jpeg/PIA16239.jpg

no martian, just cleaver stitching to give more pleasant looking image.

Direct link | Posted on Nov 5, 2012 at 06:23 UTC
In reply to:

GPW: Sigma and Tamron doesn't have the IQ or quality of the others. I shoot Nikon and I have tried both of these brands and they don't come close to the IQ of my Nikon lens. This is the reason for the cheaper pricing of Sigma and Tamron

Um, this is a Pentax lens announcement...

Direct link | Posted on Sep 12, 2012 at 02:38 UTC
In reply to:

EmmanuelStarchild: Can someone please explain what 'flourite-like' means vs. actual flourite, and how this affects quality?

"flourite like" glass is meaning that its refractive index is similar to fluorite. This is like Canons SLD glass. Quality wise not too sure, i have lenses and telescopes with both types of glass, and both perform well enough.

Direct link | Posted on Jul 14, 2012 at 00:31 UTC
In reply to:

Francis Sawyer: Let's see: 40mm, which isn't a "normal" lens on either sensor size, and slow.

More bizarre flailing from Canon.

Technically a "normal lens" for a 135 (35mm) size sensor/film is 43.27 mm. So a 40mm lens is actually closer than a 50mm lens is to "normal perspective".

Direct link | Posted on Jun 10, 2012 at 05:21 UTC
On Canon updates EOS 5D Mark II firmware to v2.1.1 article (17 comments in total)
In reply to:

DuckShots: Please help me. If I download the latest version, do I update all the previous updates or just the latest one?

Firmware updates work by completely deleting the previous firmware and then installing the new one. It does not matter if the firmware currently on your camera is the first version ever released, or the one just before the newest one. You will have the latest firmware. It's not like installing updates for you computers OS. It's like formatting your hard drive, and then installing a new OS.

This is why its so very important to have a freshly charged battery when doing firmware update, and to not turn camera off or press any buttons when doing update.

Direct link | Posted on Nov 17, 2011 at 16:37 UTC
On Samsung and Google unveil Galaxy Nexus with Android 4.0 article (132 comments in total)
In reply to:

BBnose: Steve Jobs said "I will spend my last dying breath if I need to, and I will spend every penny of Apple's $40 billion in the bank, to right this wrong,"
"I'm going to destroy Android, because it's a stolen product. I'm willing to go thermonuclear war on this."
Jobs left the words in anger in his biography.

So, how can we still buy the stolen product " Android "! No! At lease I can't.

I personally don't care who invented what... I only care that I can get the product I need, at the best quality I can afford. End of story!

Direct link | Posted on Oct 25, 2011 at 13:53 UTC
On Canon EOS-1D X overview article (363 comments in total)
In reply to:

Zabih: This is an important technology point, and I hope to can buy it!

There are always important technology points! Hate to say it, but this "hype" over the latest and greatest, never ends... wait two years... 1D XT... :)

Direct link | Posted on Oct 22, 2011 at 15:28 UTC

Hay cool, I've been on that ferry before! Awesome photo, and great story!

Direct link | Posted on Oct 12, 2011 at 10:21 UTC as 13th comment
On Seascape photography article (43 comments in total)
In reply to:

JasonQR: I'm not sure shooting at F22 is a recipe for pin-sharp anything.

Sometimes to get needed DOF, you need to sacrifice overall sharpness. It is a balancing act. I have definitely had to shoot scenes where foreground and background were so different in distance, that I had no choice to but to shoot at f/16 - 22. Otherwise some part of photo would have been even less sharp. You can focus stack with right subject, but not all subjects work, especially ones with water.

Direct link | Posted on Sep 23, 2011 at 08:44 UTC
On Adobe announces Carousel - cloud-based image service article (33 comments in total)
In reply to:

Traciatim: Any reference to 'Cloud' should be immediately replaced with 'For Suckers'.

I'm going to remember that one! :)

Direct link | Posted on Sep 8, 2011 at 00:54 UTC
On Adobe announces Carousel - cloud-based image service article (33 comments in total)
In reply to:

kcf955: They are missing 1/2 the boat. What we need is same concept but for Lightroom so I don't have to juggle export/import of multiple LR catalogs between multiple computers (laptop - desktop). I don't need more apps just a better, more streamlined way to manage my LR libraries between multiple computers and my Drobo backup. Where I can see my edits on multiple computers AND have everything backed up at the same time without having to go through the hassle of exporting/importing catalogs....

Not only that Octane, but even with the faster ISP today, most web sites/servers won't match those's speeds. I doubt Adobe will allow 100mbps download speed, even if its currently available.

Direct link | Posted on Sep 8, 2011 at 00:52 UTC
In reply to:

David Parsons: I am assuming the dof seen in the photo is due to the aperture of the lens, then moving the focal point is achieved by the information gathered from the micro lenses? so having greater dof would be possible with a smaller aperture, but with a wide aperture, surely there is the opportunity (now or later with software development) is do an 'HDR' like effect on dof, shoot at f1.8 but layer up to what would have been achieved at f8 if that is what you wanted - this would be very useful for low light, if you wanted more of the picture in focus than the aperture needed for the conditions allowed?

The "HDR" effect your talking about is somewhat similar to focus stacking, its already something people do mostly for Macro Photography, but can also be used for landscapes and architecture. Software is readily available for cameras with normal lenses to do this, of course this means taking multiple photos at different focus distances, so your pretty much limited to no moving subjects. But of course you can still shot wide open and have each image with less noise. So instead of one f/8 at ISO 1600 you can have say for example 4 or 5 f/2.8 shots at ISO 200 or still at ISO 1600 but a faster, more stabilizing, shutter speed.

Not exactly as versatile as a one shot plenoptic, but i thought i should point out that this is something available to you.

Direct link | Posted on Aug 19, 2011 at 09:50 UTC
Total: 13, showing: 1 – 13