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Messages - skitron

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EOS Bodies / Re: Whortwhile to go for 5D Mark II?
« on: December 19, 2011, 12:03:33 PM »
Just understand that the while the price of the 5D appears appealing, the accessories necessary to make it "movie platform" is not...

...That should tell you something about the limitations of owning a 5D Mark II.

In my case 5D2 limitations are well known. I need the video for business purposes and that footage will be interviews in controlled conditions so 5D2 is a good choice for it (given I also want what it does for stills). I use a CX550 for chasing the kids and such, the Sony hybrid IS is impossible to beat, hopefully 5D3 implements something like it...

That said, it appears I'll need to test 5D2 autofocus carefully in low light. If it's worse than the 50D center point, it goes back where it came from...

EOS Bodies / Re: Whortwhile to go for 5D Mark II?
« on: December 19, 2011, 11:13:40 AM »
Even though I got a "good deal" on mine ($2K bundled with Red Giant software and bag), IMO it is still overpriced. If you think about it from a pure manufacturing point of view we get about the same amount of "stuff" as a 7D assuming a tradeoff between sensor size and extra digic processors and the like, but then it doesn't even have a flash so 5D2 is actually *less* "stuff" than 7D.

If you think about it from a pure R$D amortization perspective the 5D2 is just a repackaging of existing technologies whereas 7D had new sensor and new autofocus...clearly more with the 7D.

So 5D2 pricing is similar to that of gemstones where parameter grading determines the price. I'm pretty confident it costs more to manufacture a 7D and clearly its R$D costs amortized later.

As far as marketing strategies, I suspect the 5D3 is both imminent in the very near future and it will completely obsolete the 5D2 in every respect. Otherwise why would Canon take a bunch "finally got tired of waiting for 5D3" customers out of the market by selling them a "cheap" 5D2? That is, unless Canon is betting that many recent buyers of 5D2 will dump for a $600 loss to immediately buy the 5D3? Or... 5D3 will be much more expensive and Canon figures those who've been waiting and then bit on the $2K bundle wouldn't pay $3200 for a body? (they'd be right in my case)

EOS Bodies / Re: Whortwhile to go for 5D Mark II?
« on: December 15, 2011, 09:57:17 AM »
For me it was price driven. I just bought a 5D2 from Adorama for $2K bundled with nice bag and 3 Red Giant plugins (all current versions, all that I will find useful even though one is actually a video only plugin). Not grey market, came with full Canon USA warranty. I figure at this price I can sell it for a small loss later down the road if the 5D3 ever does materialize and I just have to have it, and I'll still have the plugins. Plus for me it is a business expense I can apply to this tax year.

EOS Bodies / Re: 7D2, 5D3 and Megapixel Insights
« on: December 14, 2011, 09:50:32 PM »
Good news everyone waiting for the 5D3, it's announcement should happen within the next week since I finally gave up waiting on it and bit on a 5D2. Such is my luck.

Adorama has body + Canon USA warranty for $2K bundled with a Slinger bag and Red Giant Magic Bullet PhotoLooks, Text Anarchy and Knoll Light Factory for Photoshop.

I need to do some advertising shots for my business websites as well as a series of videos and the bundled software definitely made me bite on this deal. I'm a huge Red Giant fan for their video plugins. And best of all it will get written off this tax year, despite the high likelyhood the 5D3 will appear very soon now that I bit on the old one...

Software & Accessories / Re: Your Personal 7-Point System
« on: December 09, 2011, 05:39:52 PM »
2.  From jrista's post "The 7D, unlike other canon DSLR's, has ISO 80 as a base, making ISO 160, 320, 640, 1250, and 2500 ideal."   I've never heard of this, this is very interesting.  Can someone confirm if this is theory or fact?

I can't confirm directly but will say I saw that same info in several 7D video related forums.

Software & Accessories / Re: Your Personal 7-Point System
« on: December 09, 2011, 05:26:17 PM »
As far as the NR/sharpening goes, mine is pretty simple. In Capture One 6 Pro, import RAWs using a predefined profile I built for 50D and then zoom 400% on an area with small details, usually the eyes since I'm primarily a people shooter. Adjust as needed and apply local contrast while at 400%. Pan to dark areas to verify NR. I tend to lean on CO's "surface NR" and pull back "(regular) NR" as much as possible (which usually comes out about 1/3 NR slider 2/3 surface NR slider). The "color NR" value sent from the camera is usually right. For sharpening I tend to stay around values of 400/1.1/1 for the 50D and reduce the radius if hair doesn't look right, then increase threshold if it still isn't right. Add a hint of fine grain. Zoom out to normal and tweak local contrast as needed. This method is very fast and effective for me. It's interesting just how inter-dependent these particular functions are and it took some experimenting to find the sweet spot and fast workflow.

EOS Bodies / Re: Brand New Canon 7D $1099 Canon USA Warranty
« on: December 09, 2011, 04:20:17 PM »
I think it's grey market with no waranty. Thats the reason it has an "add waranty" button by the Buy It Now. I think they just forgot to take the mention of Canon Waranty off the "what's in the box" list. I checked their listing for a 5D2 for $2K and there is no mention of a Canon waranty on it. If proven otherwise I'd buy one of them today.

EOS Bodies / Re: Beauty is in the eye of the beholder?
« on: December 09, 2011, 04:02:18 PM »
I used to really belabor similar things in the audio world. As a result I did extensive mods to my A/D/A, built custom preamps, did vacuum tube implants in studio microphones, all kinds of crazy stuff. And it all did in fact make improvements for the better. Too bad it's not so simple in the camera world. But I learned that, while I'm all for raising the bar (and eagerly waiting for 5D3), it's a huge mistake to sidetracked from the infinitely bigger question of *content quality*. So yeah, I'll play too when it comes to disecting the technicals but I don't get very wrapped up in them anymore. And if the technicals do start to bother me I'll just go buy a used Phase One and call it a day...

Lenses / Re: Sigma 50mm f1.4 EX DG HSM....are they any good?
« on: December 09, 2011, 02:10:24 PM »

Another update: AI Servo works really well.

That's good to see. I'm having pretty good luck out of mine but this looks like it should make the percentages even better, plus maybe it works using a filter.

BTW, I get the same "pulsing" sensation with my 100 L when in servo, so it's not a Sigma specific thing. It's a bit smoother but definitely there.

EOS Bodies / Re: Earthshatteringly Disappointed With 7D
« on: December 09, 2011, 12:29:34 PM »
Totally agree, a $600 sony nex 5n can beat canon 7D in terms of image quality, check out the dpreview "Studio shot comparison:

If I haven't had 5DII with 8 L lenses and full frame, I would jump to sony nex 5n or 7 with legacy lenses. Actually I am think to get a nex 7 as backup main body since 5DII is collecting dust.

Thanks for the cool link, that is a nice resource for making comparisons. Unfortunately I couldn't find any info on what lens were used so that limits the usefulness somewhat...

I thought the RAWs out of the 5N and 7D looked a lot alike. The 5N may be slightly better at low ISO and and 7D better at high ISO. I also added the 5D2 and 50D since it will compare 4 at a time, so I would have references of both clearly better and clearly worse.

Not that it much matters if all you're interested in comparing is noise, but I did notice that the comparisons don't all have the same focal plane. For instance the 5D2 is OOF when zooming the queen's face on the playing card and also the checker targets in the upper corners, but is sharp on subjects more forward in the shot. Meanwhile the 50D is OOF when zooming anything further forward like the paper clips and bottle labels, but the queen's face is sharp as are the corner targets. Just a heads up for anyone looking at sharpness comparisons...

Lenses / Re: Sigma 50mm f1.4 EX DG HSM....are they any good?
« on: December 08, 2011, 11:10:48 AM »
EDIT 2: Lens is completely unpredictable, would not recommend at this point.

One thing I noticed about mine was if the camera is not steady (i.e. good handhold technique) I will often get both motion blur and OOF. It's as if the AF can't deal with much camera motion and still do its job. Only an issue at low aperture values.

Another thing I'm going to try even though I'm having good luck with this lens is shooting in AI servo mode when at low aperture values due to the very thin DOF. Several folks are recommending this in the Canon vs Sigma 85mm thread and it makes alot of sense. May be worth a try for you.

Lenses / Re: Canon 85mm 1.2LII vs Sigma 85mm 1.4
« on: December 08, 2011, 10:50:42 AM »
I have found my "hit rate" with f/1.4- f/2 lenses (50 f/1.4 and 135 f/2) improves radically if I shoot using AI focus and shot at 8 fps on the MkIV, particularly when shooting people handheld. Just that tiny rocking on your feet is enough to shift focus from the eyes to somewhere useless.

I think it's more than just front/back movement, though that's an important point. I get the feeling that one shot AF quits a split second too soon with fast primes, or at least with Sigma fast primes. AI Servo keeps trying even if you and the subject are stationary. I get a higher hit rate if I use AI Servo and wait to fire until the AF has settled.

Interesting, i will definitely try this. Thanks for the info!

EOS Bodies / Re: How can Nikon remain in business with 12MP FF?
« on: December 07, 2011, 08:06:48 PM »
The attached image shows 100% crops of the identical region, the left being from the 1/2000s image and the right from the 1/5s image.

Very interesting. I guess I can't "take away" what I thought I could earlier LOL.

EOS Bodies / Re: How can Nikon remain in business with 12MP FF?
« on: December 07, 2011, 08:04:51 PM »
So the sensor is actually a storage device?

Yes, that's precisely right...

In a way, yes...

Thanks to both of you for enlightening me. :) I know quite a bit about audio related circuitry but nadda about this sort of thing and the explanations are good.  ;)

EOS Bodies / Re: How can Nikon remain in business with 12MP FF?
« on: December 07, 2011, 02:25:56 PM »
Maybe it is thermal noise.   It's normally considered to be insignificant at exposures less than 1 second but certainly it's continuous and would be greater (although possibly still very small) at 1/60s than it is at 1/2000s.  Any thoughts?

Wiki has a decent and short writeup of different noise types found in all electronics. They all apply all the time, it's just a matter of when do they become significant. Obviously neuro's example reaches 'significant' since we're spending our time talking about it. :) And that said, the useful principle seems to be that system S/N is closely correlated to instantaneous intensity of light reaching the sensor and lowering the instantaneous intensity and then collecting the same number of photons over time does in fact reveal this to be true. At least that's what I'm taking away from it.  :D

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