October 20, 2014, 07:10:33 PM

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Messages - neuroanatomist

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It has been my experience, that most people purchase a medium-range fast-aperture lens, and then down the road a bit, they add a TC to the kit/gear bag.
But to find yourself suddenly nursing a 600mm f/4 with a TC on a thin-walled-camera-body. I see a chance of heart-break.

I don't understand your point.  I've used a 70-200/2.8 and a 600/4 with TCs, on and off tripods.  The lens mount on all bodies is quite strong.

Lenses / Re: 100-400 with 1.4x teleconverter on crop body
« on: Today at 10:44:38 AM »
I've used the 100-400L + 1.4xIII combo on my 1D X, and I'd call the IQ 'decent' but not great.  Here are a couple of examples.  I doubt I'd even consider ISOs this high on a crop body, even the 7DII.

EOS 1D X, EF 100-400mm f/4.5-5.6L IS @ 560mm, 1/320 s, f/8, ISO 5000

EOS 1D X, EF 100-400mm f/4.5-5.6L IS @ 560mm, 1/320 s, f/8, ISO 10000

Umm, at the risk of stating the obvious, we all know that TC's increase the deflection of the camera body, right ?!
Never seen a TC with a tripod/monopole mounting !

Is that a problem?  I suppose it could be if you are attaching your lens' tripod foot to the support (tripod/monopod) directly, but I suspect the vast majority use a quick release (e.g. Arca Swiss type) lens plate or replacement foot, when can be positioned at varying locations within the clamp jaws for appropriate balance (±TC, ±flash, etc.).

Lighting / Re: Is this dangerous when using the 600ex rt´s?
« on: October 19, 2014, 07:40:05 PM »
It's no problem leaving HSS as default.
Your flash works much harder during HSS, and produces less light while doing so.

So there are at least two problems:  1) the increased power consumption will wear down your batteries faster, and 2) the increased power consumption will heat up your flashes faster.

It seemed the core of his question was what happens at 1/250 s (Xsync) and slower, and in that case the flash fires normally even with HSS set.  The flash only fires in HSS if a shutter speed higher than Xsync is selected.  I wouldn't consider increased power consumption a 'problem' although it's good to be aware of it (one should always carry extra batteries if relying on flash).  I don't know that overheating would be an issue, but the 600EX-RT has an overheat warning (the display backlight turns red). 

But it might be worth knowing why the OP wants to use HSS, there may be other solutions.  The flash is much faster than 1/250 s, and can be used to stop action.  Alternatively, if using fill flash with a very wide aperture in daylight, an ND filter can knock down ambient light to Xsync speeds. 

Lighting / Re: Is this dangerous when using the 600ex rt´s?
« on: October 19, 2014, 04:50:34 PM »
The manual indicates that if you fire the modeling flash (which is what that 'continuous strobe' is called) more that 10 times in a row you should let the flash rest for 10 min.

It's no problem leaving HSS as default.

I pack bags in all sorts of ways, lenses go in the padded divider compartments however they fit best.  Keep in mind that when for most backpacks, hard cases, and some other bag types, 'down' is relative.  On my Lowepro Flipside packs, what is 'down' when loading them becomes the back side (away from my back) when being worn.  Having said that, relative to when I'm loading I store shorter lenses with the front element/lens cap down (so they're sideways when wearing the pack or carrying/rolling the case, longer lenses lay on their sides with the lens cap pointing what will be down when the pack is worn.  (Side note: longer 'sideways' lenses take up two 'spots' in the bag, that's one reason I went with the 70-300L over the physically longer 70-200/4L IS as a 'travel' telezoom.)

I've never had issues with caps popping off during transport.  That includes my 24-70/2.8L II, but I should mention I have one of the earlier versions that came with the 'old' side-pinch cap instead of the 'new' center pinch caps.  My only center-pinch caps are on my two EF-M lenses.

I pack the body with a lens attached, the mount is strong so there's no need to be concerned.  Many bags are designed to be packed with a lens attached, sometimes the longest one. 

Keep your empty bags zipped when not in use, clean them out occasionally (vacuum and wipe with a damp cloth). 

EOS Bodies / Re: Strange Behavior - Canon 5D iii memory
« on: October 19, 2014, 12:01:29 PM »
I suspect your Live View AF mode is set to Quick AF, so a half-press of the shutter flips the mirror down (for AF with phase/viewfinder AF), then back up. 

Technical Support / Re: Canon 24mm TS-E Mark II Tilt Knob Replacement
« on: October 18, 2014, 08:11:10 PM »
Clean the contacts anyway, just in case.  But unfortunately I suspect it will need to go to Canon.

EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 17, 2014, 12:53:24 PM »
Or cropping heavily.  Some of my final shots were shot on crop bodies with 400mm lenses and are cropped to 1:1 in the final.

If I need to crop that severely, I don't consider the shot a keeper.

EOS Bodies - For Stills / Re: How to differentiate crop vs. FF
« on: October 17, 2014, 12:24:30 PM »
And yet, you are "not seeing that much difference." 
The discussions in many of the FF vs APS-C threads could lead one to believe that the FF is always superior so I'm thinking "not much difference" is pretty good.

The general response is that in focal length-limited scenarios, the crop sensor is better.  It can be, if you're FL-limited and at low ISO and printing larger than 16x24"/A2.  Unless all of those are part of the scenario, when FL-limited there's no real advantage to the smaller sensor. 

Many people state the 'reach advantage' as the reason they choose crop bodies, but I doubt that most of them actually obtain any actual advantage based on 'reach'.  There are other benefits to crop bodies, and as I've stated previously, the main one is lower cost.

EOS Bodies - For Stills / Re: So what makes a camera a "pro" camera?
« on: October 17, 2014, 10:10:50 AM »
Canon's websites which break down pro vs. enthusiast bodies list the 6D among the latter.  Arbitrary marketing decisions.


I've seen a fair number of assertions on this forum that the 1D-series are Canon's only pro bodies, and the 5D-series and below are consumer or prosumer cameras. 

That's what Canon Australia seems to think.  Canon Europe has a different opinion.  Canon USA doesn't segregate them.  There's no 'official' Canon designation, because it's all about marketing.

2.5k just for the monitor as opposed to same price for a full-fledged desktop (that includes monitor) ... that's the difference here.

But...but...Macs are way overpriced for the features, right?   ::)

EOS Bodies - For Stills / Re: Hello FF!
« on: October 17, 2014, 08:14:54 AM »
Hmmm...  You title your post, "Hello FF!"  The implication is that you've bought your first FF camera and want to tell the world.  If you're seeking advice, it helps to title your post appropriately. 

Then, when you don't get any responses to your poorly titled post, you insult the people from whom you were trying (but failed) to request advice. 

Still, I'll offer some advice:  don't buy a camera, spend the money on a meditation retreat to practice patience and civility.

EOS Bodies - For Stills / Re: So what makes a camera a "pro" camera?
« on: October 17, 2014, 07:16:09 AM »
There is higher end gear and lower end gear.  Calling the higher end gear 'pro grade' is just a marketing tactic used by some manufacturers to label their higher end stuff.  As pointed out earlier, car makers use letters or numbers in the naming scheme for differentiation...that really has nothing to do with professional drivers.  "Pro" gear is just an arbitrary marketing designation, it doesn't connote anything about the intended use.

You've just replaced "pro" with "high end".  If you like that term better, then what makes a camera "high end".  In the original question I interpreted "pro" to be a qualitative term, not official marketing (does Canon, Nikon, or Phase use "Pro" in their naming?).  So "pro" as in "designed for professionals", "targeted at professionals", "used as the primary workhorse by a sizable fraction of professionals using the brand", etc.,

I think you've missed my point, it's not about 'pro' in the name.  High end gear is designed for people who can/will pay more for it.  Of course such gear has characteristics that differentiate it from other products in the lineup, but 'intended for professionals' isn't one of them.  I'd bet a much more sizable fraction of professional photographers use xxD bodies than 1-series bodies.  The 5DII was a widely used by pros, the 6D is essentially the same camera, but Canon's websites which break down pro vs. enthusiast bodies list the 6D among the latter.  Arbitrary marketing decisions.


I'm not planning on getting an iMac, but I hope the advent of large Retina displays means we'll see the return of the 17" MacBook Pro before mine gets too much longer in the tooth (but then, it's still running fine, and with the 960 GB SSD I put in it's quite snappy).

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