November 27, 2014, 06:11:09 AM

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Messages - arcanej

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What advantages does this lens have over - say - a train, which I can also afford?

Street & City / Re: Your best street shots of any kind.
« on: October 06, 2014, 09:57:49 PM »

EOS Bodies - For Stills / Re: Posting about sensors and DR!
« on: September 30, 2014, 11:00:47 AM »
There comes a point when you stop beating a dead horse and you start making glue. These forums have become stuck.

Third Party Manufacturers / Re: iPhone 6 gets an Exmor
« on: September 29, 2014, 03:19:34 PM »
Their curved sensor is still rigid.

I understand... it was a bad joke. For what it is worth, here is a good description for why iPhones might be bending along with a little force diagram.

Third Party Manufacturers / Re: iPhone 6 gets an Exmor
« on: September 29, 2014, 03:03:23 PM »

Can Exmors withstand bending?

Sony is way ahead of this with their curved sensor tech.... 

EOS Bodies - For Stills / Re: Photography's Top Manufacturers for 2020
« on: September 21, 2014, 11:47:33 AM »
Absolutely - Samsung has come from nowhere in the mobile phone market, to become one of the market leaders, Sony has a reputation for making huge money, then dropping the ball, look back at Walkman, Hi8, Betamax, minidisc etc, which is why given their sole backing of the full frame mirrorless market, makes me feel uncomfortable and why I'm pretty sure it will flop and the crop Mirrorless product will succeed.

HTC & Apple are others to watch, no product in the market but a great following for quality and big pockets to buy one of the established brands technology - Pentax, Leica, Sigma or Fuji perhaps ?  The market will be very different in 2020, but one thing is for sure, Canon & Nikon will still be big players

Leica might be the wildcard. In 2011, Blackstone acquired a 44% stake in Leica. Private equity typically has a 6 or so year investment horizon before they begin to wind down funds, so Blackstone may be looking to unload its stake in the next few years. This was pretty much confirmed from a recent interview with Leica's CEO.

Blackstone acquires stake in Leica:
Leica CEO on Blackstone wanting to sell:

Reviews / Re: Tony Northrup - D810 vs. 5D Mk3
« on: September 19, 2014, 10:05:28 PM »
What is the time between design to final product for a CMOS sensor? Or, to ask it a different way, how long after AMD's purchase of Radeon did the first fully AMD designed Radeon graphics card reach the market?

Canon has had patents for designs that could compete with the Sony-Exmor and Samsung-BSI sensors. A product incorporating these patents hasn't released it yet. If the D800 was a shot across the bow for Canon, should we begin to see that next year? That would be three years after Canon saw what Exmor could do. Is that approximately the lead time from the start of a chip design to a product reaching the market?

Taking a step back, what Canon had been doing seemed like a great business plan. It was - and still is - the dominant camera manufacturer. It's nearest peer was trailing in sales and didn't have the capital to sink into a revolutionary, new chip, sink a few hundred million into a new fab and come out with a revolutionary new design.

I'm sure Canon did the math: what would be the incremental revenue that could be gained from a much higher DR chip design and what were the costs associated with bringing that chip to market. If the up front costs were higher than the discounted future cash flows, the best business decision would be to hold off.

Reviews / Re: Tony Northrup - D810 vs. 5D Mk3
« on: September 19, 2014, 04:34:34 PM »
After reading hundreds of these threads debating so many minutiae in such scientific rigor, I have come to one conclusion: there are a lot of really smart people who've bought Canon gear. I feel smarter by association!

And I don't mean this in a trivial sense. Head over to a Leica forum, for example. Those people may have more money to burn, but they can't hold the same caliber of discussion.

"The body alone costs $16,900."

Erk!  :o

And that's the cheap model.  The other one is "$25,400" I think that is body only also

Erk Erk!

It's a little costlier than that. After you write the check for $25,400, you then have to write a payout half of your remaining wealth in the ensuring divorce.

Is there a MTF chart for this lens anywhere?

Set an X-Rite ColorChecker next to your monitor, take a picture of the monitor and the ColorChecker and then correct colors through X-Rite software. If the image of your monitor on your monitor looks really off, you probably need to run an adjustment.

Reviews / Re: NIKON Releasing a Medium format DSLR 50MP
« on: August 02, 2014, 11:38:01 PM »
Hopefully someone with better attention to detail, too.  In removing the left side of the camera, the lens release was also removed.  A buyer would need to think carefully about which lens to mount first...

That might be a feature not a bug. A MF entry by Nikon will need a new lens lineup. The article mentioned that Nikon has a patent for exactly one MF lens. If there is only one lens, no real need to take it off after you mount it.

Reviews / Re: Pentax 645z Review
« on: July 31, 2014, 05:20:54 PM »
A question to the more scientifically competent than I:
So, DSLRs have bigger lenses than rangefinders or other mirrorless cameras because there is a bigger distance between the end of the lens' flange and the sensor. Would it be possible for Canon or Nikon to make a mirrorless medium format camera that could use their existing stock of 35mm equivalent DSLR lenses?

Third Party Manufacturers / Re: DXO uh-oh?
« on: July 30, 2014, 12:03:37 AM »
That's stunning, jrista! Thank you!

Third Party Manufacturers / Re: DXO uh-oh?
« on: July 29, 2014, 09:46:38 PM »

If you wouldn't mind, I'd love to get a walk through of your post processing. You mentioned using DeepSkyStacker and PixInsight to boost the DR of your files. I'd love to get a a step-by-step look at what you do. Thank you!

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