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Messages - RVB

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Reviews / Re: Review - Sigma 50mm f/1.4 DG Art
« on: January 20, 2015, 04:35:21 PM »
Nice review Justin.  I had purchased this lens a while ago and had to return it three times due to none of them are able to focus correctly without micro adjustment.  Once they were adjusted the images were beautiful and I was able to capture tack sharp images at f/1.4.  Though I had returned it seven months ago due to it would not work on bodies that does not have build in micro adjustment function, I had always missed it.

Last week, I decided to purchase it again and this time with the USB DOCK.  The copy I received still needed micro adjustment to work; however, after spending two nights of adjusting and testing all focusing ranges in the Sigma USB Dock software, I can now say that it is tack sharp without any micro adjustment ☺.

Now, the big elephant standing in the room is: "would I need to recalibrate the lens again if I buy another Canon body in the future?"  Luckily, I do have access to cameras and after testing my calibrated Sigma 50mm f/1.4 ART on a T5i, 7D Mark II, 5D Mark III and 1DX with multiple photographers, I now can confidently say that no calibration or micro adjustment will be required once a copy of a 50mm f/1.4 Art is calibrated correctly with the Sigma USB Dock and will work on any compatible Canon bodies.

By the way, this lens will also works (auto focus with all 61 focus points) with both Kenko 1.4x and 2.0x Teleplus Pro 300 DGX teleconverters on a 5D Mark III (so as Tamron 150-600mm DI VC USD but not the Tamron 28-300mm PZD VC).  Using 1.4x @ f/2 images looks like taken from a "soft focus" lens; however, when using the 2x @ f/2.8 it is sharp (that was unusual!).  Both become sharper when closed down one stop.

Thanks again for reviewing this product and nice to see your beautiful work on your website and flickr.  Heavy it may be, I still rather use this lens than any other 50mm f/1.4 (or f/1.2) out there by any other manufactures.

I had a similar experience.once this AF is fine tuned its superb ,even wide open and color and contrast is very good,its a great lens..a steal at this price.

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Lenses / Re: New Rebel & EF 11-24 f/4L USM Coming Shortly
« on: January 15, 2015, 10:19:40 AM »
Its the same as the Zeiss ZF 15mm but this is a zoom and has AF so its not so bad,the street price will also fall within a few months...

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Am I the only person looking at the sensor dimensions and thinking "they get away with calling THAT medium format these days?... and people pay what?!"

Really, I'd just assumed "dMF" was worthwhile and comparable to MF (120/220). Are these figures for real?

I agree.

This shouldn't be called anything more than a FF+, it isn't even 2" wide. Not good enough.
While I don't think I'd ever want an 8x10, a digital 4x3" sounds just about right. Though they should probably design the lenses for a 5x4" sensor and then just use the largest sensors available (kind of like ten years ago).

Leica uses a similar sized sensor in the S system and they call it "Pro Format",It's not a replacement for a Phase/Hasselblad FF sensor.

The rules of sensor size and resolving power are different between digital and film!FF digital like the D800e can out resolve 645 film,and on landscape magazine ran a great test that compares formats,the IQ180 can easily match 5x4 film ..  see this article.. http://static.timparkin.co.uk/static/tmp/cameratest-2/800px.html

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Software & Accessories / Re: need help choosing the right macbook.
« on: March 02, 2014, 02:59:15 AM »
Hi im looking for advice on choosing a new MacBook. I am looking into the MacBook pro 13" with retina
•2.4GHz Dual-core Intel Core i5, Turbo Boost up to 2.9GHz
•8GB 1600MHz DDR3L SDRAM
•256GB PCIe-based Flash Storage
 but the apple worker is telling me if I want to run adobe lightroom and photoshop I will need to get the 16gb.
so im stuck in deciding what to get I also have a budget. so I don't know if I should just stick to the one I was going to get or go with a MacBook pro that doesn't have retina and add more storage. if you have any advice id appreciate it thank you.

Lightroom typically uses 3GB of ram at the minimum,performing raw conversions and other tasks raises this considerably ,kernel task and basic apps will use easily another 3Gb of ram,I think that 16GB of ram is a good idea for your next Macbook...

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EOS Bodies / Re: "Two New FF Bodies in 2014" - if 5DM4, would you jump in?
« on: November 30, 2013, 04:47:05 PM »
DR needs to improve and they need to get rid of banding and pattern noise,the D800 sensor is far better than any of Canon's sensor's,Canon really need to catch up with or surpass the D800 sensor.

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Software & Accessories / Re: Photoshop CC & Lightroom 5 for $9.99/mth
« on: November 22, 2013, 03:10:05 PM »
This promo makes me think that their new licensing approach is not as successful as they had thought it would be. 

Agreed.

I'll continue to use my 'perpetual license' version, thank you very much.

So will I…but for those that don't already have a CS license, the cost of Photoshop CS6 new would pay for close to 6 years of a subscription at $10/month, and they'd have CS7, CS8, etc., when they come out.  That doesn't sound like such a bad deal…

Thats "if" it stays at $10 p.m...  I wouldn't bet on it..

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Software & Accessories / Re: Photoshop CC & Lightroom 5 for $9.99/mth
« on: November 22, 2013, 09:42:01 AM »
Adobe are hurting,they're trying to lure you in now with a cheap fix.. don't take the bait,let them learn a hard lesson instead....

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Third Party Manufacturers / Re: Zeiss Otus Initial Impressions
« on: November 22, 2013, 02:26:22 AM »
Best?  So, it's the lightest?  And has the greatest zoom range?  Is unprecedented in it's telephoto capabilities?

People that market "the best" anything drive me nuts.  Maybe it's the sharpest in the corners wide open.  Maybe it has the truest color representation and saturation.  Great, but that doesn't make it "best" in a million different other scenarios.

They claimed the best image quality in 35mm format and they achieved this... simples..

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Third Party Manufacturers / Re: Review: Zeiss 15mm f/2.8 Distagon
« on: November 14, 2013, 04:29:53 PM »
I'm generally a Zeiss fan myself but the Nikon 14-24 (w/adapter) represents a much better value and is sharper across the frame when stopped down vs the Zeiss.

I have both,, the Zeiss is sharper and has better colour and contrast (although at certain apertures the Nikkor is better at the edges.. but not by much),it also has no problems with focus shift,the same can't be said about the nikkor..

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Lenses / Re: Lots of New Lenses Coming in 2014 [CR2]
« on: November 10, 2013, 12:52:46 PM »
Any chance 85 1.2ii will be updated?  :-\

+1 ,A lighter faster focusing version would be welcome..

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The is almost no distortion with the 85mm 1.2 Lmk2  ,just some -EV in the corners,so any idea of "deforming the corners" or "Liquifying" the image is nonsense,Lens profiles do almost nothing to the image except correct the Vignetting..

12
Technical Support / Re: URGENT help needed: Issue with files on CF card
« on: October 12, 2013, 05:43:47 PM »
Try viewing them in finder,if they're visible there you may be able to copy them into a folder..

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This lens is not an L lens, it's not casual AF lens. It's a speciality lens made with real image quality in mind.
Who cares if it doesn't have AF. And if you don't like the price there are many other "good" lenses with AF in a cheaper price range.

There are many who appreciate this lens.

+1

It's a master piece of optical engineering,it has a lot in common with the Zeiss master anamorphics.. No canon L lenses can match it's wide open performance except for the best of the great whites,namely the 200f2 (I owned one for 3yrs)and up and the especially mk2 versions of the super tele's.

It's not for everyone but Zeiss knew this when they gave Dr Hubert Nasse the go ahead to design and build it,at a push I would say indie film makers will be in for it,it's a fraction of the price of the Zeiss masters..it is what it is ,an expensive  niche lens high on performance and low on versatility .. very focused piece of kit. (and still almost half the price of the Cron 50 APO)

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here's a stupid question...  with sigma suffering  auto focus issues but reportedly great  image quality...  why don't the  manual focus crowd gravitate to sigma as a value option and simply use it as a manual focus lens?

The Sigma has onion bokeh.. great lens but if bokeh is your thing you may be disappointed ..

15
here's a stupid question...  with sigma suffering  auto focus issues but reportedly great  image quality...  why don't the  manual focus crowd gravitate to sigma as a value option and simply use it as a manual focus lens?

The manual focus on Zeiss does not compare with that of any other auto focus brand.

+1

One of the reasons that Zeiss glass is so popular with the video crowd...

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