October 31, 2014, 03:54:50 AM

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Messages - Marsu42

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Lenses / Re: Canon 6d vs 24-70mm mark ii
« on: October 30, 2014, 03:49:00 PM »
The 24-70mm is a great lens, but it often whiffs on focusing.  I'm amazed at how many more keepers I have with my 70-200mm and my 17-40mm.

Well, the 17-40 is a f4 lens and uwa at that, so it's not that hard to get something into focus :-p ... as others wrote, maybe you should get the lens serviced because the L1 is known for being more fragile than the L2 if it ever took a bump.

Am I fooling myself that my current 24-70mm will perform better on the 6D?

Yes, you are fooling yourself at least partly: One of the most important advances of the 24-70L2 is the more precise af motor, but *only* the 1dx/5d3 (and now probably 7d2?) can make use of it.

So basically you're paying for tech you cannot use, that's why the Tamron 24-70L might be a better combination - sharper than Canon's L1 and with IS, plus having a fast lens af doesn't really matter with the 6d anyway :-\

Due to finances, I would have to sell the body or lens to fund the new purchase.

Imho stretching your budget to get top notch glass on a crop is complete overkill, even though investment in lenses usually is the smarter choice. The f2.8 standard zooms are really designed for full frame for low light and thin depth of field - if that doesn't matter you could simply go for the f4 zoom otherwise.

You didn't write what you usually shoot, but with your L1 lens and the 6d you'll see a vast difference, while with the L2 it'll take some pixel peeping or very large prints to notice the difference.

EOS Bodies / Re: Modular DSLR Coming from Canon? [CR2]
« on: October 29, 2014, 03:01:53 PM »
We’re told that Canon will introduce a brand new DSLR model some time in 2015 that will be somewhat modular. All we were told is that the viewfinder will be interchangeable, as well as “other parts of the camera”. We’re trying to find out what else would be removable on a DSLR.

As this would be the choice between old-school optical vf and evf, I guess the other interchangeable parts simply depend on your main choice - like maybe no phase af/metering for a pure evf camera for live view / video. I don't see Canon modularizing anything else, their careful crafted lineup depends on too much giving this and that model this and that feature (or not).

EOS Bodies / Re: Patent: Canon EF 35mm f/1.4L II
« on: October 29, 2014, 02:59:15 PM »
We haven’t seen a new patent for this optical formula in quite some time.  I recently received a claim that we’ll see such a lens in Q1 of 2015, but I haven’t been able to confirm that information.

Half a year from patent public release to lens shipping - is this realistic looking at Canon's last patents and respective release dates? Or does the time simply depend on how much Canon really wants to get this patent built?

Technical Support / Re: failing shutter on 60D
« on: October 28, 2014, 05:50:26 PM »
Fixing a failing shutter can be done with a $6 part, assuming that you are able / willing to tackle the job, and, of course, that the issue is not with the shutter motor.

Oh my, why didn't anyone mention this before?! You might just have saved me €1000 for a new crop backup dslr.

* Are there any differences between the shutter blades offered on ebay (the price varies a lot), or is this just the sellers making a different amount of profit?

* Did you know how complicated it is to chance the shutter myself, any links on this? Of course I'm going to google it myself, too, but since you brought it up you might have some more insight than the first random search engine hits.

Technical Support / Re: failing shutter on 60D
« on: October 28, 2014, 04:46:29 PM »
You can continue using it at slow speeds until it finally dies.

Plus you can use it for video and with Magic Lantern for full res "silent pics" w/o moving the shutter, so if you still get into live view the 60d definitely is still good for something.

EOS Bodies - For Stills / Re: Whats wrong with the 70 D ?
« on: October 28, 2014, 04:01:19 PM »
Those recommending FF...you're not going to notice a difference in print except at high ISO. Even there you have to be printing large. Nothing against FF. It is better for really low light, it can achieve more shallow DoF, and some lenses just seem to 'fit' FF better (i.e. you want a 17mm TS lens to be 17mm). But final IQ in the vast majority of shooting situations? No difference.
As an owner of FF and crop cameras, I have to disagree. All the little improvements add up to a superior image for print and online.

As I'm also using crop (60d) and ff (6d), and not wanting to get into ff/crop discussions I just want to mention that it very much depends on the actual scene and postprocessing strength how large the difference is (if any).

This is especially apparent on fine detail like fur and feather.

I doubt anyone will argue against that in general(?), the point probably is that a crop 70d will have the edge against 5d3 ff if you put the price difference into a better lens... but if money is of no concern, go 1dx+200-400L. And hire someone to carry it for you :->

I'm in the field with a 70D now, and I can say the keeper rate is much higher than 7D.

... and, do you miss the spot af pt option from the 7d or find the  70d's af points too large? Or doesn't it matter for what you track/shoot anyway?

EOS Bodies - For Stills / Re: Whats wrong with the 70 D ?
« on: October 28, 2014, 03:29:34 PM »
the 70d does have AFMA Marsu.

I know, I meant to say that for giving back afma 60d->70d, they cut spot af 7d->70d :-p

The af points are big and that can be a problem if your trying to focus on a bird through an opening in the branches and that sort of thing.

Hmmmyes, I figured as much, how unfortunate :-\

Certain wide aperture lenses seem to confuse the af system?

Absolutely, that's why the 1dx/5d3 af system have "lens groups" and only a few very recent and select lenses support the full-blown af system with all points. As Canon puts much more time tuning their 1d cameras (and the 5d3 has the same basic af), you can then expect it to work.

With a lowly camera as the 70d, it'll be much more hit or miss as the same af system is only on the 7d which didn't exactly have a reputation for precision. The 60d had the good fortune to be based on Canon's long-running diamond 9-pt system, so inevitably they had a lot of attempts to make it work alright.

I recommend grabbing a 1dx or 5d3 manual and look at the chapter "lens groups" - if the lens your struggling with has a low/limit group, that'll be your problem. Esp. wide angle and fast lenses have a lot of distortion to the edges, so the outer points face a challenge unless the af system is tuned for this exact lens.

Lenses / Re: More EF 100-400 f/4.5-5.6L IS II Talk [CR2]
« on: October 28, 2014, 02:51:32 PM »
Availability will be at the end of the November according to one source.

Yeah, right, a few people are beta-testing some lens design now, and in one month it'll be available to the general consumer. This is flimsy, even for CR :-p ... on the other hand, no mention of *which* November :->

Technical Support / Re: 60d issues
« on: October 28, 2014, 02:25:12 PM »
AE exposure is supposed to show the (*) in the screen right?

Yes, and it does (well, on my 60d :-p)... but only until you release the button. It's much more convenient to select "AE lock (hold)" which freezes the exposure until the next shutter cycle.

Technical Support / Re: failing shutter on 60D
« on: October 28, 2014, 02:23:34 PM »
The camera has never been cleaned or lubed... I was wondering if the problem could be solved with a proper cleaning. From everything I have read, when a shutter fails, it just stops... so I am wondering if clean and lube is the solution.

My 60d shutter is about to fail at 160k cycles, I asked about the same question "What can I do" here: http://www.canonrumors.com/forum/index.php?topic=22565.0

Quick answer: Time to buy a new dslr as the price/cost relationship of a 60d shutter replacement isn't worth it.

EOS Bodies - For Stills / Re: Whats wrong with the 70 D ?
« on: October 28, 2014, 02:20:01 PM »
Focus issues with central focus point. Canon deny about this problem, but serviced mine and now it's better. My old 60D focus was more reliable...

Speaking of the af system - if I should ever replace my 60d with (nearly) failed shutter with a 70d, I'm worried about the 70d's af system. Now I'm really used to mediocrity as I've got the "5d2 af clone" 6d, but at least the 6d has an ok center point unless you're using fast lenses.

Question: When I tried the 70d in a shop, I felt that the af point were very large - and Canon has removed spot af on 7d->70d (thanks, Canon!). Probably the price for re-introducing afma which they've cut from the 6d :->. Is it difficult to get an af lock on small objects, like the eyes of a horse looking at directly you?

Personally i am not interested in long tele primes, and even less in DO designs. But i would strongly consider a non-push pull, hand-holdable and compact, 4+ stop IS, absolutely excellent IQ 100-400 II at a price not far beyond 70-200 II. By Absolutely excellent IQ would mean every bit as good as 200-400 MTF, just 1/2 to 1 stop slower.

... while I am at posting pictures, this comes to mind concerning your wish for a top-notch, reasonably priced "mini 200-400" :-p

The 70–300 DO costs about the same as the 70–300 L these days.  Give it enough time, and the 100–400 DO will probably cost the same as the 100–400 L.  :)

The DO version of the 70-300L has just dropped in price because of the mediocre reputation (though it seems to be a great travel lens), imho not because of a "natural" movement of L lens' prices downwards.

If Canon introduces new, but mature and actually working tech they'll add a big premium - that is on top of the difference vanilla vs. DO production costs. Until the competition catches up, they'll try to keep it that way - who knows when this will be.

So for budget-limited photogs the (only) nice perspective is grabbing used legacy lenses while the new kids on the block smirk about the stone-age size and weight of these old school bricks:

The 400 5.6 prime beats them all, canon 100-400, sigma zooms, whatever.

A midrange zoom isn't supposed to "beat" a prime because unless you're focal length limited. With the zoom you can get the optimal sensor coverage meaning less noise and more sharpness because of less nr. With a prime, what do you do if your subject decides to get near you? Quickly switch to the 300L, 200L and 100L?

What's not to like is "supposedly".  Also, there's not too much weight reduction, although the length decrease is nice.

After their first botched DO attempt, imho Canon will only release a new generation if all possible criticisms (except for the price :-p) are eliminated. And they'd better hurry up as Sigma and similar are catching up building traditional high-iq lens designs...

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