petrocan

petrocan

Joined on Feb 20, 2011

Comments

Total: 37, showing: 1 – 20
« First‹ Previous12Next ›Last »
In reply to:

Tom Schum: If Sigma is working on a new DSLR or Mirrorless camera, this fine might put a serious dent in their schedule. We might be stuck with another year of delay in the Sigma development process.
On the one hand, patent infringement is a serious problem and ought to be enforced with fines. On the other hand there can be far-reaching effects against competition in a case such as this. Since Nikon was asking for ten times as much money as they actually got, the judgement seems lenient to me.
Thinking about in-lens image stabilization in general, it seems to me that there is not a whole lot of choice regarding how to do it: move a lens or an element of a lens. In-camera image stabilization is a similar situation: you move a sensor.
Either way, one false move and you have re-invented something previously patented, and there will be infringement issues to deal with. I doubt Sigma had any criminal intent. This is an area for the patent trolls.

i'm not a expert on patent, but usually a concept cannot be register. What you mentioned is a concept, move a element or a lens. That's a concept. But the implementation can be register, how to do you move that lens, with what to move it...

I guess sigma has copied the way to do it. Then you can argue there must not a tons of way to do that either. Ask a lens architect and he will tell you otherwise.

Direct link | Posted on Mar 12, 2014 at 14:19 UTC
In reply to:

slncezgsi: The film duplicator is going to support also medium format films, hurra! I really need that sort of accessories so that I do not have to send ALL of my films out for scanning even if mostly I only need decent pre-views (the good ones are then scanned with better quality of course)

I have used that kinda of duplicator with a digital full frame dslr, the trouble is how to get uniform light.

Direct link | Posted on Feb 6, 2014 at 20:26 UTC
On Just Posted: Sony Alpha SLT-A99 review article (498 comments in total)
In reply to:

jonikon: With the recent price drop announcements* for the Nikon D800 body to $2799.95, and the Nikon D600 24-85 VR kit now reduced by $700, to only $1999.95, it is obvious to any reasonable person that the Sony a99 is WAY overpriced at $2800 for the body only. A thousand dollars to high!

How DPR ignored these huge price discrepancies in their value rating for the a99 is anyone's guess, but unless Sony substantially reduces the exorbitant price on the a99, they will not be able to sell very many of them, DPR gold award notwithstanding.

*
http://nikonrumors.com/2012/12/13/for-tonight-200-price-drop-on-the-d800-free-24-85mm-lens-with-the-purchase-of-the-d600.aspx/#more-50272

-Jon

But that's just rumor right?

where can I buy it?

Direct link | Posted on Dec 13, 2012 at 21:32 UTC
In reply to:

Marc Rogoff: This is not only a D600 problem but apparently the D800 has the same issue. In fact my D3X has terrible dust issues - very frustrating that Olympus seems to have solved the dust issue yet Nikon with all their R&D money cant sort this out...

I don't think Olympus have solved anything, but the fact that the sensor size is smaller it does help I think. I never get dust on my 4/3 camera. And also I rarely close down my lens at more than f8, so it kinda help too. I don't know but I never get dust on picture with 4/3 camera. I have a old 1ds, I get dust all the time :)

Direct link | Posted on Nov 22, 2012 at 14:43 UTC
On leaf colour in the Ad campaign: Turning over a new leaf challenge (9 comments in total)

very nice leaf, how do you black background like this? do you put a black cloth on the back of the subject?

thank you

Direct link | Posted on Jul 4, 2012 at 13:11 UTC as 6th comment | 1 reply
On Lily 1 in the That Colorful Lily! challenge (6 comments in total)

Very nice shot, how did you get that black background? I want to do the same with my daughter shot. any insight would be welcome.

thank you

Direct link | Posted on Jun 20, 2012 at 17:57 UTC as 2nd comment
In reply to:

Banana Chips™: The lack of CRC (floating element) is a disappointment...

"It has the same focusing distance .85 feet as the old AIS 28mm f2 (which had CRC). Why do you need CRC necessarily?"

The 28mm AIS f2.8 has CRC and it focus 7inch compare to the f2 which is 9inch I think not 0.85feet. 9inch is 0.75feet. Anyway, it's not big difference but some some people and use it makes the difference.

Direct link | Posted on Apr 19, 2012 at 20:36 UTC
On FRANK ANDIVER - PONTE DEL DIAVOLO in the Drivin' that Train... challenge (15 comments in total)

Very well done, thank you for this inspiring picture

Direct link | Posted on Mar 21, 2012 at 19:40 UTC as 6th comment
On Just posted: Nikon D800 test samples article (423 comments in total)
In reply to:

cleverinstigator: wow this image makes the E-5 and OM-D look awesome.

+1, the om-d is amazing, maybe not just sensor related, the lens has surely something to do with that.

Thank you for posting image of the d800, to confirmed I should buy the OM-D :)

Direct link | Posted on Mar 20, 2012 at 15:29 UTC
On Just Posted: Olympus OM-D E-M5 test samples article (458 comments in total)
In reply to:

Mtsuoka: looks like this one gonna beat "current" APS-C offerings..
think about it:

why 35mm film, with all the advance in film technology, never replaced MF film?

well you are right, it can't possibly replace bigger size sensor. But if it gets to the point where it's excellent enough. people might just settle for that. I was just like the film days, 35mm was getting excellent enough so 35mm rule the landscape of photography. 35mm did replace medium format in a lot of field. It just didn't totally replace it.

Direct link | Posted on Mar 18, 2012 at 19:47 UTC
On Just Posted: Olympus OM-D E-M5 test samples article (458 comments in total)

Is the setting from the jpg over sharpned or other camera are just soft???

I see line from the scene so clear now, it's like someone highlight it.

Direct link | Posted on Mar 16, 2012 at 21:29 UTC as 94th comment | 2 replies
On this one might be closed (1 of 1) in the Sorry, We're Closed challenge (3 comments in total)

It might be closed, but the building is still pretty leveled :)

nice pic!

Direct link | Posted on Feb 24, 2012 at 13:30 UTC as 1st comment
On Nikon D4 & D800: What do the Professionals Think? article (391 comments in total)

andy sheppard:
"It's great to see Nikon finally challenging Canon's dominance in the HD video arena but for me video is not a priority. On the rare occasions that I need to capture video I'll do it with my phone."

Hehe, I always wanted video from my camera, I have 2 who can do it, but I never do video.... only on the beginnig when I want to test it.

Weird isn't it?

maybe video is a art that demand more knowledge, I never had nice video.

Direct link | Posted on Feb 23, 2012 at 13:52 UTC as 80th comment | 2 replies
On Preview:olympusEM5 (1364 comments in total)
In reply to:

REJ: Given the new image stabilization feature, this just might be the ideal camera to use with my Minolta 500mm mirror lens. Not to mention ISO 800.

Lack of noise doesn't mean that the detail will be kept. I find canon files noiseless at high iso, but I find them not very nice because all the details smooth away.

Posted on Feb 22, 2012 at 13:47 UTC
On First impressions shooting with the Olympus OM-D E-M5 article (269 comments in total)
In reply to:

petrocan: I was very interested to see how it performs with 4/3 lenses. I have a few I would like to be able to use.

I know I can buy a e30 or e3, but this camera is tempting.

too bad, I thought it can be faster.

Direct link | Posted on Feb 22, 2012 at 03:22 UTC
On First impressions shooting with the Olympus OM-D E-M5 article (269 comments in total)

I was very interested to see how it performs with 4/3 lenses. I have a few I would like to be able to use.

I know I can buy a e30 or e3, but this camera is tempting.

Direct link | Posted on Feb 22, 2012 at 02:43 UTC as 57th comment | 4 replies
On First impressions shooting with the Olympus OM-D E-M5 article (269 comments in total)

I like the model :)

Direct link | Posted on Feb 21, 2012 at 22:13 UTC as 70th comment
On _DSC3750 in the Senic views of California challenge (4 comments in total)

nicely done, I don't think this is post processed at all. nice capture, nice patience.

Direct link | Posted on Feb 12, 2012 at 16:41 UTC as 2nd comment
On Nikon D800 preview (1110 comments in total)

with the d800 out, the used body of d300, d300s and d700 are dropping fast. I see in my local listing a few now. check kijiji site.

Direct link | Posted on Feb 7, 2012 at 18:04 UTC as 286th comment
On Nikon D800 preview (1110 comments in total)

This is crazy!!! 36mp!! I want one, but why would I want one? I even don't print my picture hehe :)

Direct link | Posted on Feb 7, 2012 at 13:55 UTC as 319th comment | 2 replies
Total: 37, showing: 1 – 20
« First‹ Previous12Next ›Last »