December 20, 2014, 10:34:18 AM

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Messages - Random Orbits

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406
Canon General / Re: Canon PowerShot ELPH 340 HS Official
« on: January 06, 2014, 12:26:19 PM »
OK, looks OK, just OK, but why does Canon still offer 30+ models of P&S cameras? I thought this segment was largely dead, taken over by iPhones.  I should think six models would be plenty. Just don't get it.

It's still a large market, albeit shrinking.  Plus a lot of those on the page are the previous models.  A new model comes out and pushes down the price of the lower model.  The consumer can choose to buy the latest and greatest and pay the higher price or choose something that does 90% of the job for a bit less money.  Either way, Canon makes a sale and makes money.  As long as each product offering is profitable, Canon is better off offering more choices that would cater to a wider audience.

407
Lenses / Re: Baby on the way - lens help
« on: January 06, 2014, 09:31:26 AM »
Congratulations on your family's addition!

I would hold off until you get the 6D kit and trying your existing lenses with it before replacing the 50 f/1.8.  The 50L does not perform that well at/near its minimum focal distance (if you AFMA at MFD, you'll be off significantly at more "normal" shooting distances).  See if the 50 f/1.8 will satisfy your requirements first before upgrading to the 50L.

None of the lenses you listed have very high max magnification (135L is best at 0.19x and the others range from 0.11 to 0.15x), so you'll be missing detail shots.  Newborns are small, so I'd suggest getting the 100L first.  It will give you the detail shots that you will not be able to get with the rest of your kit.  The IS also gives it more flexiblity for general photography and portraiture.

408
Lenses / Re: Should I go for the 85mm F1.2L II USM ?
« on: January 06, 2014, 08:03:35 AM »
If the 85L II is what you have your sights on, go for it.  The 85L II is designed as a portrait lens, and for that purpose, it works well.  It's harder to justify if the 85L II would be your only lens at that focal length and if you need for other scenarios, but when you have the 70-200 II too, the 85L II will be used mostly for portraiture while the 70-200 can be used for sports, etc.

409
Lenses / Re: Which one should I get?!
« on: January 05, 2014, 10:08:44 PM »
The way I use a fisheye now is more of a non-essential. It's to have it there when i need it. But i feel that I lug it around as a paper weight more often then not. that's why I ruled out the 14mm. It's just a tad bit too wide for everyday practical use as well as astrophotography and landscapes, given the large price tag.

Does anyone have any experience  with the canon 24mm? I really like a fast lens and don't mind that it's fixed focal length. When shooting stars pretty much anything at night more light is always a plus.

as for the Zeiss and the Samyang and maybe Tilt/Shift lenses, I have no experience with Manual focus for more practice uses and everyday stuff.. Is it easy to pick up?

The 24L II is a fine lens, good for just about everything except for astrophotography due to the coma.  To avoid the coma, people stop it down to f/2.8 to f/4.  You don't want to use it wide open for astro.  The 24-70 II is said to have less coma than the 24L II at f/2.8.

If you use a tripod/LV for much of your landscape work, manual focus and tilt/shift will not be hard to pick up.  If you don't use the movements, the TS-Es are about the best EF lenses at their focal lengths.  However the movements give you so much more capability to correct perspective and tilting the focal plane. 

410
Yeah, now if they can only reduce the battery drain.  ... The power consumption is another issue.  Battery technology is based on basic chemistry and there aren't any technologies that are better than Li-ion (cost, power capacity, etc.) and right now, people are not willing to give up the 700+ shots with a DSLR (OVF) for 200 shots with an EVF.

The source of the battery-life problem is the misguided insistence that mirrorless cameras be small in size, which obviously dictates a small battery as well.

Even if the batteries were as large as that in the 5DIII, the number of shots per battery will still be much fewer.  The EVF does not work without power.  That is the nice thing about OVF.  You can set up a lot of shots without using any power until you need to press the button.  On a good day, I can get 800+ using PDAF.  Using LV heavily, maybe 300, and if I had to use an EVF/LV for rough framing etc, it'd be even less.

411
Simple truth: the OVF is a passive device that has tied camera progress for years. This has been supported by Canikon being the benchmark of photography and by their being uninterested in developing EVFs.

That said, the EVF is a dynamic, active device that gives plenty of advantages. Magnification, exposure preview, peaking, zebras, etc are only some of them. More than that, an EVF can be extensively developed and improved over time, OVFs not quite. OVFs are the past, EVFs are the future, and we are now in a transition zone.

If any of the nay-sayers in this thread had actually tried the EVF in the a7 or OMD, probably they would have a different opinion.

Yeah, now if they can only reduce the battery drain.  EVFs can match OVFs but they are currently a lot more expensive than the OVFs.  That problem will be solved as the technology is developed and matured.  The power consumption is another issue.  Battery technology is based on basic chemistry and there aren't any technologies that are better than Li-ion (cost, power capacity, etc.) and right now, people are not willing to give up the 700+ shots with a DSLR (OVF) for 200 shots with an EVF.

412
Canon General / Re: Are Metal Mounts Better Than Plastic?
« on: January 04, 2014, 09:33:55 PM »
And this is one reason why I don't like how most reviewers evaluate "build quality."  They evaluate the feel of the materials of the parts they can see, which is a mistake.  Think of cheap faucets with nice finishes but plastic gears.  The same thing happens with lenses.  Having a metal outer barrel is not indicative of the materials used for the inner assemblies that often matter more...

OTOH, you seem to have missed the part where the materials for the inner anchors being metal actually might be worse than from plastic.

Umm... no.  I said NOTHING about whether or not lenses should be made with metal or plastic.  My point is that you cannot tell build quality by just evaluating just how it feels on the outside.  One can't evaluate quality without understanding the design and the design tradeoffs, and that is impossible by just feeling the outside of a lens.

413
Lenses / Re: Which one should I get?!
« on: January 04, 2014, 03:18:16 PM »
For astro, I'd start with the Samyangs.  They have a lot less coma than their Canon counterparts.

For landscapes, I love using the TS-Es (17 or 24).  Although I use the TS-Es more for buildings (exteriors and interiors), the additional DOFs are useful for landscapes too.

414
Canon General / Re: Are Metal Mounts Better Than Plastic?
« on: January 04, 2014, 03:03:39 PM »
And this is one reason why I don't like how most reviewers evaluate "build quality."  They evaluate the feel of the materials of the parts they can see, which is a mistake.  Think of cheap faucets with nice finishes but plastic gears.  The same thing happens with lenses.  Having a metal outer barrel is not indicative of the materials used for the inner assemblies that often matter more...

415
Pricewatch Deals / Re: Grab a Pancake! $129 at B&H Photo
« on: January 03, 2014, 07:01:37 PM »
Wait!  Does this lens come with the pinch-cap??  that's actually really important.. lol

Mine didn't come up the pinch cap... :(

Mine came with a pinch cap.

416
EOS-M / Re: EOS M: Patent-16-120mm-f3-5-5-6-is-stm
« on: January 02, 2014, 10:32:22 AM »
Interesting about the new lens patents.  I bought the EOS M pretty much hoping for the wide angle zoom.  Apparently Canon wasn't interested in selling it to us.  Rumors say the EOS M2 won't be sold here either.  I doubt this new super zoom will make it to the US.  I just bought a SL1 and will be selling my EOS M with kit lens and adapter.  Yeah, I'll miss its size and uniqueness, but at least with the SL1 I can use all the lenses I already have without adapter and performance should be a little better.

I thought about buying the 11-22 overseas, and I still might.  With the 11-22/22/18-55, that would be about as much as I'd get for the M.  The 11-22 is supposed to be a bit better than the ef-s 10-22, which was a pretty good lens before I moved to full frame.  I sold all my ef-s lenses so moving to the SL1 wouldn't make sense for me.

417
Lenses / Re: Canon EF 100 f/2.8L IS Macro autofocus?
« on: December 26, 2013, 06:29:25 PM »
I'm curious to know just how much Macro folks that are recommending using AF are doing? It's a sizable part of my portfolio and AF isn't ever part of the equation.

I use AF for handheld stuff and with lower magnifications.  For higher magnifications and for greater DOF, the tripod, rails and flashes come out and AF stays off.

418
Lenses / Re: Canon EF 100 f/2.8L IS Macro autofocus?
« on: December 26, 2013, 04:35:16 PM »
One Shot AF should be used for most applications.  The lenses focuses to 1:1 at the MFD, but if you're closer than the MFD, the lens cannot focus.  It will take a while for it to give up though.  To test this, step back a foot and try again.  If it locks, get closer and try again.  At some point, you'll be closer than the MFD and it won't be able to lock.

For macro subjects, use the aperture to control the DOF.  If it shutter speed drops too much, then adding light (i.e. flash) would be the way to go.

419
Software & Accessories / Re: Black-rapid failure!
« on: December 26, 2013, 01:47:29 PM »

If a randomly applied rotational force is applied to screw threads, the probability of that force being applied in the direction that tightens the screw is equal to the probability of it being applied in the direction that loosens the thread. You might want to look up the definition of "random."

Using a similar theory playing roulette, I once bet on red thinking that it would eventually land back on red. So I doubled the bet each time knowing it would eventually hit and I would win and cover my losses. What I found is that it can hit on black ten times in a row. Perhaps it would work if I had more money at the time.

I felt just as if the camera had come loose from its strap, I was also randomly screwed.

Even if a game is 50/50, the expected value with = 0.5*value, but the expected value is only the likely value.  With many roulette turns, the expected value might be even but the odds of remaining exactly even decreases toward zero as more turns as taken because the probability is spread over a greater number of possibilities.  It is similar to the random walk phenomenon. 

420
Lenses / Re: Sigma 35/1.4 or ...
« on: December 26, 2013, 11:27:22 AM »
Sounds reasonable.  I used fast 24 and 35mm primes when I used a APS-C.  I then added a 50 when I moved to FF.

I guess the question is whether or not you'd be OK with the S18-35 replacing the Tamron 17-50.  That would be swapping one crop lens for another.  Then you'd have the 18-35/50/70-200.  It would require a bit more lens swapping but it would give you enhanced DOF control over the 18-35 range.

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