December 20, 2014, 03:08:30 AM

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Messages - Albi86

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Lenses / Re: Review: Sigma 50mm f/1.4 DG HSM Art Lens
« on: April 23, 2014, 08:04:11 AM »
How many (p)reviews of the Sigma 50mm f/1.4 ART actually report problems with the AF? I read a few but only found this report at TDP. Is it possible that Bryan had bad luck with his copy? Although it was provided by Sigma?

EDIT: Lenstip reports an AF problem specific with the Canon 1Ds MKIII. Maybe they should have tried another FF to see if it is that camera or the lens....

I used to own the 'old' Sigma 50mm f/1.4. I never had AF problems with that one. I got rid of it because I did not like to performance on the FF but loved it on my 7D.
It is possible that production copies will perform outstanding where always you have some copies that are not okay.

Lenstip claims the issues were with the 1Ds3, but non with the 5D3. Bryan reports issues on a 5D3.

Good news is that it's probably a software quirk. I would wait a little before buying the lens, but I'm confident Sigma will release a firmware update soon.

We should also wait to see how widespread is the problem.

It's also interesting to notice that both tested lenses (lenstip and TDP) came from Sigma. Maybe they weren't really retail-ready models and had a beta firmware?

Lenses / Re: Review: Sigma 50mm f/1.4 DG HSM Art Lens
« on: April 23, 2014, 06:47:52 AM »
Besides some cases of users having problems with the 35A, I believe in the majority of cases the lens works quite well.

I can't imagine why this 50mm should be a step back. It is either a lens design problem (big issue) or a small software quirk that will soon be corrected via firmware update (small issue).

It's a pity because the rendering of this lens looks really stunning.

Canon General / Re: TIPA winners for 2014
« on: April 23, 2014, 05:53:45 AM »
I'm not sure I really get this advanced/expert/professional distinction...

Third Party Manufacturers / Re: Fuji Full Frame X-PRO2 coming 2015
« on: April 11, 2014, 09:55:31 AM »
Given that Canon is probably going to lay all their cards down in September

What makes you so sure?

Lenses / Re: New 50mm Sigma ? There are other options !
« on: April 10, 2014, 09:45:48 AM »
It is a good lens with IS and at a decent price, but nothing more than that.

It delivers consistently but it has absolutely nothing special about it.

Third Party Manufacturers / Re: Sigma 50mm f/1.4 Art Gets Reviewed
« on: April 09, 2014, 11:56:07 AM »
SLRgear has updated the Sigma 50 review since publishing the Otus.
The crop comparisons show well what tradeoffs Sigma made in designing this lens to be slightly less sharp but provide better microcontrast.
I like what I see from the Sigma more than from the Otus at this stage but for me a lens must balance sharpness and bokeh so I'll still buy the Sigma cuz it's cheaper. ;)

from this excerpt, they agree

"All in all, this is a case where the raw test numbers doen't carry the entire message. For our money, we'd go with the slightly higher CA, lower sharpness, but higher micro contrast of the Sigma, even if the two lenses cost the same."


I so much wish I liked the 50mm FL better.

12 mp? Foveon or Bayer sensor? It's hard to believe that Sony, which got good reputation because of its high MP sensors, would go back to 12 mp camera  :o

I don't think they're going back, but rather in a parallel direction. This camera seems to be based on the opposite concept of the a7r and is targeted at a different market.

... I don't think these documents should be released, its a dangerous game and I don't think CR has the money or the power to fight a big corporation like Canon ... but be my guest and prove me wrong.
I'm with you - it is a risky endeavour to release NDA'd or internal documents.

Technically there should be a legal issue only for the person that sends/steals them. If you have no agreement with Canon, you're not a Canon employee, etc.. There should be no obligation for you to keep them secret. Unless Canon publicly disclaims their genuineness and sues you for diffamation.

Think I'll bookmark this.

Might be useful next time I hear some litany about disservice from Nikon or Sony and how much more attentive Canon is to customers.

Oh yes because Nikon (D600) and Sony (just about everything from flaming TV's to laptops) don't have similar lists!

Yes? No? Maybe?

I'm not claiming that Canon is worse, I'm only disputing the belief that Canon is better.

Think I'll bookmark this.

Might be useful next time I hear some litany about disservice from Nikon or Sony and how much more attentive Canon is to customers.

Third Party Manufacturers / Re: New Curved Sensor Tech by Sony
« on: April 04, 2014, 10:36:45 AM »
I guess it's going to be for small sensors only.

Third Party Manufacturers / Re: D9300
« on: April 04, 2014, 10:35:27 AM »
If it's true that the 7D II will be announced in May, this Nikon D9300 rumor would have a quite exceptional timing for a mere coincidence.

Third Party Manufacturers / Re: New: Sony A7s FF E-mount
« on: April 04, 2014, 10:31:51 AM »
Considering it's going to be announced for NAB, I guess it will be something video-related. Maybe 4K?


The optics of FE 24-70 f/4 are very much from ZEISS made by ZEISS, including the anti-reflective coating ... its just that the lens isn't all that good for the money they are charging, because of which some people speculate that ZEISS "only provide QC to Sony".

It's a bit more than a speculation.

I did some research, and Zeiss/Sony lenses are indeed designed by Zeiss, but in close collaboration with Sony, which is then the sole responsible for production and distribution. This means that Zeiss engineers are restricted to what Sony is able or willing to produce.

In fact it's not a contradiction that Zeiss will announce some manual focus primes for the FE mount. Those will be 100% Zeiss lenses like the ZE or ZF primes.

Lenses / Re: Philosophical question about Sigma Lenses - Why?
« on: March 31, 2014, 03:10:24 AM »
Just out of curiosity thanks to a conversation in Marketing 101 - why would a company like Sigma create products for other brands, specifically lenses for Canon? I'm curious about the thought process that went into a decision by such a company to create accessories and devices for someone else's products since they already have their own line of camera bodies...

Sigma is the third lens manufacturer in Japan by market share, not soooo far away from Canon and Nikon. When Canon sells lenses to Canon users only, Sigma sells to Canon, Nikon, Sony, Fuji, Panasonic, etc etc.

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