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Messages - CR Backup Admin

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EOS Bodies / Re: Ai Servo in low light
« on: January 14, 2011, 11:31:46 AM »
Realise that focus assist will only work in one shot and AI Focus modes (and I'm not even sure about AI Focus, since I always use one shot in these situations).

Can you provide a reference that says this? 

When the external flash is enabled, AF Assist is automatic on the 1D MK IV.  It can be disabled by CFNIII-15, and it is not available in live view under certain conditions.

See pg 98, 119, 134, 216, 225 of the manual.

EOS Bodies / Re: Ai Servo in low light
« on: January 14, 2011, 10:18:53 AM »
The 1D MK IV is well known for its weak low light focusing.  The 5D MK II is about the best.  Attach a flash unit (580 EX II) which has a focus assist light.  That will be about the best solution.

EOS Bodies / Re: white balance issues
« on: January 14, 2011, 10:16:02 AM »
Are you shooting raw or jpeg?

If jpeg, use a gray card to use for setting white balance.  That will also help you set colors in post processing if you shoot raw.  There are all kinds of gray cards and similar gadgets that do something similar.

EOS Bodies / Re: Canon 5D Mark III / 1D Mark IVn
« on: January 12, 2011, 02:22:33 PM »

beyond that ... how about not making personal attacks on the forums here?


I've been monitoring the forum, and have removed posts with personal remarks as I find them. 

Think carefully before you post, I don't like to interrupt a thread, but I will remove posts, or even ban someone if they continually post objectional material.

Do report spam, I remove it as soon as I find it.

Off topic posts should be avoided as well, it makes it much more pleasant for readers if you stick to the topic.


Lenses / Re: 5D MKii lens
« on: January 11, 2011, 12:41:29 PM »
Also does anyone have experience with the 24-105mm f4 L IS USM lens?

The 24-105mm f/4L IS is a great lens on FF.  With f/4, it's really too slow for capturing movement indoors, but then for that application you often need a fast prime since f/2.8 is not very fast, either.  For static subjects, the IS is great.

IQ is very good and the zoom range is excellent - it makes a great walkaround lens.  There is a fair bit of barrel distortion at the wide end - pretty noticeable depending on your subject.  I use DxO for post processing, and the software corrects the distortion very well (better than Canon's corrections in DPP).


EOS Bodies / Re: Advice on Camera
« on: January 09, 2011, 08:56:52 PM »
I have been following your discussions on this forum for a while to learn more. I'm doing research to get a good camera for our daughters birthday. She is very serious about this, but I know close to nothing about cameras.

I have been looking at the 7D, but I can see it has been on the market for some time. I do not want to buy old tech.

Please come up with some nice advice about cameras and lenses, I'm looking at spending about 5k for a body and maybe 2-3 lenses.

If your daughter is serious about a camera, listen to her.  She likely knows what she wants.  Consider renting a camera and lens that she is interested in.  $5000 is a lot to invest for a starter, a months rental would be reasonable before making a final choice.

Neither I nor anyone else can make a reasonable recommendation for equipment without knowing her experience level, and what kinds of things she wants to photograph.  If she doesn't know, start small and then get the equipment that she needs to expand her photography as she gains experience.

If she is planning on attending photography school, they usually start with film cameras and progress to digital.  They will tell her what to get for her classes.  For serious photography, you need a serious computer, monitor, and software, so allocate money for that, its easy to spend $2500 and up on a pc and software. 

EOS Bodies / Re: 5D Mark III [CR1]
« on: January 07, 2011, 07:54:35 PM »
My point was that sometimes there are very large expectations for the 5D, which will probably never materialize, certainly it will not be a "Lord of Darkness" and will not offer MF DR (nor does it need to).

The 5d appeals to a large user base - which is perhaps its greatest selling point, and my expectation for the next gen camera is to offer greater improvements to the video oriented user, while offering smaller improvements to the stills user (since the camera is already very good in this category).

I wasn't disagreeing with you.  I hope there are improvements in video features like adding usable autofocus, but I don't really expect it.  I do expect improved DR and ISO, and perhaps a slightly higher pixel count. I also expect 7D type autofocus.

EOS Bodies / Re: 5D Mark III [CR1]
« on: January 07, 2011, 05:24:18 PM »
I am not saying that Canon would be (or should be) abandoning completely the ISO and DR (sensor) improvements, and we probably will see improvement in both areas, but that is probably not the greatest selling point.

Not the greatest selling point for whom?

They may not realize it, but even for the theoretical "video only" user, sensor improvements will probably benefit them greater than any other single area.

The reason I bought the 5D MK II was the low light performance and reasonable pixel density.  Certainly all the features are important, and everyone buys for a different reason or combination of reasons.

The only thing that would make me want to upgrade my 5D MK II would be noticibly better ISO and DR.  if everything else remained the same, I'd upgrade.

Canon EF-S and EF-M Lenses / Re: Canon EF-S 18-55mm f/3.5-5.6 IS
« on: January 06, 2011, 10:40:04 PM »
A few pictures taken on a cheap lens, in fact probably one most of the entry level cameras come with now, the Canon EF-S 18-55mm f/3.5-5.6 IS on a 450D.

Overall, very happy with the results, slight issues with fine detail when zooming into the images, in particular some colour fringe between contrasting colours, but on the whole, I'm finding it difficult to justify spending big money on moving up to a 17-40 or 16-35 as I had originally intended.  Great starter lens !

Excellent job.  Pretty much any lens will take excellent photos if the photographer knows how to take advantage of its strong points and work around its weak points.

I have a lot of "L" lenses, but am happy to use a consumer lens if thats what is available.

The photographer is by far more important than the hardware, IMHO. 

EOS Bodies / Re: Nikon Mirrorless to be launched in March?
« on: January 03, 2011, 01:43:21 PM »
NR thinks so, based upon an article in the German DSLR Magazine.  So with Pentax hinting at a mirrorless camera in development and Canon still "monitoring developments", perhaps "the first shall be last and the last shall be first" (apologies on my poor biblical referencing!). 

Have Canon missed the boat? In a way, it doesn't matter for anyone considering a puchase because using existing DSLR lenses via an adaptor is a poor solution to the lack of lens availability on current systems.  This is micro-4/3rd's greatest advantage over the current Sony/Samsung offerings (credit to Samsung and their comprehensive roadmap). 

Whilst mirrorless is currently not up to DSLR technology in performance terms, either it or Sony's SLT technology (ironically pioneered by Canon in the sixties) probably represent the future.  The 500lb Gorilla of the consumer electronics world is hedging its bets, while the old silverback of the camera world seems to be digging its heels (or its head) into the sand.

Canon does not generally leak informatioon about upcoming products, they hold the information very closely.  nikon, on the other hand does leak information.  Just two different philosophies. 

The patents that canon has filed in recent years usually give a mirrorless example in addition to the primary moving mirror implementation.  Pellicle mirrors are covered as well.  Obviously, they are and have been aware of the interest in mirrorless designs, but tend to be very conservative.  When they finally decide to release a design, they have a huge PR department who will make it seem like they were first, and will sell a ton of them based on their reputation and sales power.  Canon has always done this, and it seems to work for them.  Whatever they come up with will be among the best, not always the best,  but will be much less expensive to produce and will sell for a larger profit margin than the competition, thats Canon's stock in trade.

Canon General / Re: Canon 1st and 3rd in Japanese DSLR sales
« on: January 03, 2011, 12:44:03 PM »
I believe that those figures have both Canon and Nikon dropping their share of the market from 2009 due to the inclusion of mirrorless cameras. 

2010:  Canon 32.1% of the total, Nikon 26.8 % of the Total

2009:  Canon 37.9% of the Total, Nikon 28.1 % of the Total  http://www.radiantlite.com/2009/12/digital-slr-sales-in-japan.html

Nikon dropped a little, but Canon took a huge drop. That 32.1% is a 15.3% drop relative to 37.9% in 2009.    (37.9-32.1)/37.9 = .153 (15.3%), while Nikons drop is (32.1-26.8)/32.1 =.046  (4.6%)

I'm sure that this is not lost on either of them, and new systems are being developed.

Canon EF Zoom Lenses / Re: Canon EF 100-400mm f/4.5-5.6 L IS USM
« on: January 03, 2011, 12:06:03 PM »
Has anyone used this lens with the new mark III 2x converter? What do think?

With a 2X extender, the lens becomes a f/11 and will not autofocus on any Canon camera (maybe at 100mm it might).  The new MK III TC's are supposed to give faster AF with the new superteles and might be a hair sharper.

There does not seem to be much point is paying a high price to use it with a f/5.6 lens and have to manual focus.

EOS Bodies / Re: all 18MP bodies
« on: January 03, 2011, 11:49:04 AM »
Nikon does the same thing, they share sensors accross as many cameras as possible.  The cost to make a sensor drops as the manufacturing process matures and bugs in the process are worked out.  The cost of developing a new sensor is extremely high, and Nikon  as well as Canon have been reducing costs, and sharing sensors is low hanging fruit.

Lenses / Re: EF 70-300 f/4-5.6L IS Review
« on: January 01, 2011, 09:31:48 PM »
I love the 100-400mm L on my 5D MK II and 1D MK III, but with a crop camera, I might go for the 70-300mm L.  There are more things to consider than focal length, and with a lighter camera, the 70-300 would balance well.

I don't think you could go wrong with either, I've used my 100-400mm on my 1D MK III at 1/25 sec handheld in a pinch, and the results came out much better than I hoped for.  Not totally sharp, but plenty good for normal sized prints.

Lenses / Re: Who do you trust?
« on: December 31, 2010, 06:12:36 PM »
A DPR reader once complained that a lens had a higher rating in DPR than photozone.  The DPR reviewer replied that the results were remarkably similar, its just that photozone is harsher than they are, but they are seeming the same results, just intrepreting it differently.  As long as you understand this, then differences between reviewers tend to become minimal.

I always check photozone, the digital picture, and other sites that have reviewed a lens.  If all but one agree, I can usually find a explanation for the difference.

I'm also suspicious of a site that seems to have very close connections with a lens company.  I'm not going to name it, (It is one of the ones named above) but I can't help thinking about the apparent connection when I see a high rating on that site and low ones elsewhere.  I even bought one of the high rated lenses once, it was horrible and went right back, so I tend to avoid that site.  Still, it might just be the luck of the draw that my lens was bad.  One bad lens does not really condem a company.

I had 5 Sigma lenses that would not work on Canon DSLR's, but did work on old Canon film cameras (a common story).  I  was able to get Sigma to rechip one of them (105mm f/2.8 macro) at my expense ($100).  I keep the rest that Sigma would not rechip to remind me that there is no guarantee that a 3rd party lens will work on tomorrows new DSLR.  I've never had a issue like that with Tamron or Tokina, just  older Sigma lenses, and those made by Sigma for other companies like Quantaray.  Except for the 105mm Macro, they came with old Canon film cameras that i had bought.

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