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Messages - gmrza

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391
Australia / Re: ND filters
« on: November 06, 2011, 04:42:52 AM »
check this place http://www.digitalcamerawarehouse.com.au/category827_1.htm
prices are out outrageous so i think im going to buy from b and h but at least they have some stock by the looks of it

Did you mean this one:
http://www.digitalcamerawarehouse.com.au/prod3553.htm

392
Australia / Re: ND filters
« on: November 06, 2011, 02:08:30 AM »
Thanks for the replies guys :)
I might give it a go and buy from amazon if i still couldnt find the filters anywhere near

Thanks peter hill for the info. Will look at it soon at home

Cheers!

Just wondering if anyone has had any luck sourcing a 8-10 stop ND filter / black glass in Melbourne recently.  -  I am off to Tassie in a couple of weeks and have left it too late to source a filter from overseas...

393
EOS Bodies / Re: 1dx and Ethernet
« on: November 02, 2011, 06:06:58 PM »
I'd guess at a minimum it will have the FTP capability of the WFT units that include ethernet, so you could use an SSD in a netbook or laptop. Either that or load up a NAS appliance with some SSD drives, most need mains power but not a lot of current so you could use a small inverter.

A number of small NAS appliances usee "cable wart" power connectors.  For instance, the external power supplies of my Synology NASes provide 12V to the NAS itself.  The DS410 (which I have) uses 20W on standby and 60W (or thereabouts) with 4 3.5" drives spinning.  It can also accept 2.5" drives, which should allow you to use SSDs.  The DS411 (which replaces the DS410) uses 10W on standby.  The DS410 is hardly a high end NAS, but I have still managed write speeds of over 50Mbytes/sec - this may be a challenge.  (I can't remember exact numbers.)

It may be worth investigating a hack to just run a NAS off 12V supply, cutting out the manufacturer-supplied power supply.  I think Synology also has NAS that is designed to take just 2.5" drives.  You may need to check on performance though.

You should probably be able to achieve the same with other manufacturers' NASes.

394
EOS Bodies / Re: Used 1DsIII Prices
« on: October 30, 2011, 08:04:50 PM »

Given the highly evolved performance parameters of the 1DsIII, particularly in dynamic shooting situations, it simply delivers a higher percentage of "keepers" than the 5DII. They are both brilliant cameras, you just need to know which one to pull out of the bag for the situation you are shooting in.

Rather than seeing them them as opponents, they are in fact mighty fine companions.

Paul Wright

Realisticly, with a 5D, you do need to spend more time worrying about your camera as well - so shooting in adverse conditions can be problematic.

Even though my wife's 5DII is coping quite admirably with a workload of up to 5000 frames a week recently, she is very conscious of the need to be careful in rain and dust.

A 5D(II) would never stand up to the rough handling I have seen/heard of a 1Ds being subjected to.

Depending on the work you are doing a few thousand bucks of capex is nothing compared to the damage to your business of not being able to do a job.  Add to that the higher keeper ratio when working in a pressurised situation.  Hence why my wife will be looking very seriously at the 1DX as a replacement for the 5DII when it has to be put out to pasture.

395
EOS Bodies / Re: Does a Digital camera need SLR?
« on: October 26, 2011, 10:23:15 PM »
No matter how good or fast the contrast-detect algorithms can be run, it still has to guess at the direction of focus adjustment, move the focus element a little, measure again, rinse and repeat.  That physical process of the adjustment can't be overcome by faster processing.

Could it be helped by faster processing?  Take two measurements and extrapolate to the direction and magnitude of adjustment?  Maybe that's already being done.  I agree that even so, it will never be as fast as phase detect.  But maybe fast enough in some cases?  AF times and shutter lag on P&S cameras are growing shorter, albeit slowly.

Or is the answer to build a phase-detect autofocus system into the main imaging sensor?

396
Lenses / Re: Buy 24-70 f2.8L now or wait for 24-70 f2.8L II
« on: October 26, 2011, 05:38:22 PM »
Hi,

you are right, intially there were issues with quality control. Recently, I have not heard of people that had to send a lens back.
I happily use the 24 70 F2.8L and sofar I have never missed IS, to me this is not really important at this focal length and I use this as a general purpose lens anyway.
IS is important in macro and in tele, the step change in the 100 mm macro to IS is enormous. Hope this helps

I think you are right about IS - the 24-70 is mostly used in situations which require exposures fast enough that IS is not necessary - e.g. for event photography where the exposure must be short enough to prevent motion blur.  It is very different to a 70-200mm lens which is often used, even for events, at around 1/80s to 1/125s, and therefor needs IS.

397
EOS Bodies / Re: Does a Digital camera need SLR?
« on: October 26, 2011, 08:34:54 AM »
Because contrast-detect AF is still way too slow.

I'm wondering how the in-sensor phase-detect system in the Nikon 1 cameras will perform in real life.  I wonder if that technology is ready for prime-time.
Aside from the phase-detect AF issue, I am also skeptical as to whether electronic viewfinders have proven themselves yet.  They also have room for improvement.  I don't regard composing via the rear screen as a serious option for a lot of situations, since it is generally difficult to brace a camera in live-view mode, plus having the sensor and rear LCD active chews the battery.  (I say it is generally difficult to brace in live-view, since there are a few situations where live-view wins out.)

398
Lens Giveaway Contest / Re: *Contest* Street - Post Here.
« on: October 21, 2011, 11:01:34 PM »
Altercation

399
EOS Bodies / Re: Opinion: 5dii or wait for 5Diii
« on: October 20, 2011, 10:27:21 PM »
Just read "What's next" from CR: a funny sentence is - "One of them will NOT be the 5D3"... Logic and wish tells me the rest.
There are many reasons to wait at least until Nov 3rd -
1. Patience is important feature of character
2. A chance to read more about techniques and experiences of other people and with other devices (not only Canon) and compare.
3. Save money, more money
4. Much better peace of mind is to buy when no one expects further announcements in the year.

You misread it. The November 3rd announcement is rumored to have 2 cameras... one of them will be a professional camera will the other one will NOT be a 5D3. Everyone just needs to stop taking everything as a signal to the 5D3, the 5D3 will not be until next year around this time.


If I recall correctly, the 5D was released about roughly one year after the 1DsII and the 5DII roughly one year after the 1DsIII.  If past performance is anything to go by, Canon could take up to a year to announce the 5DII's successor.  After that, you need to factor in a delay for RAW conversion software to become available if you do not use DPP.  You also need to consider whether you really need to buy the camera directly after release - for the initial period after release, expect to pay more (closer to RRP) for the camera.  With time RRP and street prices will drop.  Since the 5DII was released, the price of the body has dropped by close to $1500 in Australia.

Canon may however announce a 5DII successor sooner after announcing the 1D X, for reasons such as:
- Competitive pressure - Nikon has caught up in terms of "affordable full frame"
- next year being the 25th anniversary of the EOS system
- split in the 5D line.

I am not budgeting for a 5DII replacement until at least a year from now, unless my wife has a need for a second full frame body before then.

400
EOS Bodies / Re: EOS-1D X Canon USA Press Release
« on: October 18, 2011, 06:54:39 PM »
Why on earth would you need 30+ MP for a studio shoot? So you can print stuff on the sides of buildings?

As a matter of fact yes. Go to Macfly's website and you'll see that he does shoot images (movie promos, mainly) that do indeed go on the sides of buildings.

Seriously folks, it's bad enough to flame people, but flaming people without having a clue what their history and needs are is just ignorant.

There are a lot of reasons for solid use of a 30+MP camera... As everyone I'm sure has read from me before, I'm a huge proponent for more MP, but with that being said, I also understand there's a place for every camera and every use... As i've mentioned before, in film days, a 35mm camera rarely was printed at anything bigger than 8x10... even at 8x10, with good old tri-x film (ISO 400), you could see some grain.  Sometimes you would be daring and ask your lab (or push it in the darkroom) and pump out 11x14's, but you knew you were going to lose quality... Professional photographers knew and had in their back pocket MF cameras or even large format cameras for bigger prints...

Now adays with cameras we can pump out 16x20 practically without any interpolation with the 5d/7d printing at 300dpi.  I have shot murals with my 7D that were put on tradeshow booths (20 feet wide) however they were still lifes and I was able to shoot the large scene in sections and stitch together to build a native file without any interpolation.  Larger MP's would mean that I could do that with less stitching and make things essentially quicker, better, higher profit margin, however I hope that we keep in mind the limitations of the 35mm format and if you have the rare need for super large images, not to expect a 35mm to pull that off but instead look at MF with digital backs or LF with digital/scanning backs instead.

It would be a clever marketing ploy on Canon's part to put out a 5DII successor with 30+MP.  That would see a lot of professionals needing a 1D X and 5DIII - OK a lot have one or more 1DsIIIs or 1DIVs plus a 5DII already anyhow.
That way, Canon could put a very clear line between the intended purpose of the 1D X and the 5D line, and create more of a reason for people to have both!

Writing out 30+MP at 10fps is probably more than current storage and bus architectures can do, which may be one reason for sticking at 18MP for the 1D X.  A large section of the market will be happy with a 30+MP camera that can do 3-5fps.  - Of course that will not make everyone happy, but it will probably make Canon a lot of money!

401
Canon General / Re: Canon EOS 1D X Press Release
« on: October 18, 2011, 12:12:30 AM »
The 7D shoots 18 MP RAW files at 8 fps with dual Digic 4. If the Digic 5 is indeed 17 times faster and the 1D X has dual Digic 5 plus Digic 4 for metering, why can't it handle RAW at 14 fps? That's not even twice as fast at moving data as the 7D, unless it turns out to be foveon type sensor or something.
That is what I was wondering about.  Do you need that much power to process 18 MP raw files at 12 FPS and if not, what could the rest of the grunt used for.

Could Canon have removed the AA filter?

402
EOS Bodies / Re: The New EOS [CR3]
« on: October 16, 2011, 05:53:58 PM »
The closest thing is the Canon or other manufacturer's  MTF charts which measure contrast, (another way to indicate resolution).  So far, all Canon lenses seem to easily outperform a 21mp FF sensor at least in the center.  (edges and corners are another matter).  However, we won't be able to measure it on a camera unless the camera has a higher MP sensor.  We do use them on a 18mp 7D which requires a far higher resolution than a 5D MK II just fine, but only see the center portion.

How about testing with film ? Aren't there any films that are 'sharper' than 21MP ?

In a word NO.

I tested my 5D2 alongside my old Canon A1, both using a 50mm f1.8 lens.

I can assure you the 5D2 creamed the best film could offer. Even on low light the 5D2 come out on top convincly. It resulted in me selling my A1. And I have been using an A1 since the late 80's. Had 3 of them at one point.

And if any one is wondering, I did shoot at 12800asa on my old A1, cos that was its top setting. You just couldn't find the film so I had to push 3200asa to achieve it. Great fun and a great reserve option, but not against a 5D2!

That was the experience I had recently doing a (less extensive) test of the 5DII against my EOS 650, both using the 50mm f/1.4.  The 5DII out-resolved the EOS650 hands down.  For all the "romance" of shooting film, I am not sure it is worth the tedium.

403
EOS Bodies / Re: Leica M9 – A Second Opinion
« on: October 16, 2011, 03:09:30 AM »
I'm no fan of Rockwell by any stretch, but what he's says about distance of rear element to image plane is close to what I read many years ago about why rangefinder cameras are capable of sharper images than their slr counterparts.

Mirror slap is a non-issue with mirror lock-up.

The advantage a rangefinder has is that, without a mirror in the way, the lens mount can be brought closer to the the focal plane.  As a result there is not the need to employ a retrofocus design for short focal length lenses.  Unfortunately retrofocus designs lose out on edge to edge sharpness.

404
EOS Bodies / Re: The New EOS [CR3]
« on: October 14, 2011, 11:15:00 PM »
My main concern about in Camera GPS is that it does not function well in the reviews I've seen so far, and it eats up batteries. 

I don't object to it, its a good idea, but it would be more attractive if it worked better than what we've seen so far.  The external GPS modules seem to work just fine, but are another item to drag around.

I forgot to add - this needs to be a feature you can turn off.  Sometimes you would prefer not to have images geotagged, and sometimes you do really need the battery life just for shooting.

405
EOS Bodies / Re: The New EOS [CR3]
« on: October 14, 2011, 09:52:07 PM »

I know it's something that will go largely unused, but it's not a difficult addition if they do it like the d3 series. With them you still need an attachment to a garmin or whatnot, but it's just the ability to connect it through a simple cable and the results recorded straight to the EXIF. I'm not a camera manufacturer though so it may be more complicated, but i don't see how.

GPS capability is going to become a "must have" in the consumer segment, plus the hardware is now being manufactured in such large quantities, that even if it is a capability that only a few people really need, it will be cheap for Canon to include.

Again something that is niche is the kind of barcoding integration that the 7DSV has - not many people need it, but it would make my wife's life a lot easier on some of her jobs.

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