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Messages - neuroanatomist

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6181
EOS Bodies - For Stills / Re: 1D X - Few Questions
« on: March 04, 2013, 07:49:42 AM »
I have always shot sRGB but this article makes me think. What do you shoot with in-camera?

I shoot RAW.  I can specify a color space appropriate for the intended output when I convert to JPG.

6182
EOS Bodies - For Stills / Re: Amazon vs B&H for purchase?
« on: March 04, 2013, 12:16:17 AM »
Quote
Doesn't really matter (as long as you're buying direct from Amazon, not a 3rd party even if fulfilled by Amazon).

I'm curious about your caveat for 3rd party vendors fulfilled by Amazon.

"Fulfilled by Amazon" sort of sounds like Amazon is the seller, but they're just the shipper.  3rd party vendors on Amazon, whoever ships the merchandise, can be risky.  Amazon is an authorized Canon dealer, the 3rd party may not be.  There have been lots of instances of grey market items, counterfeit batteries, etc., from 3rd party sellers on Amazon.  Yes, Amazon has the A-to-Z guarantee, but having to use that is likely to involve jumping through more than a few hoops.

6183
I bought my 55-250 for $199 on Amazon with an Xsi and 18-55 several years ago. The round (NOT petal) lens hood fits both lenses and causes a round solid vignette on the wide end of the kit lens.

A bent paper clip fits into an electrical outlet, too...just because something 'fits' doesn't mean it's the right fit.   ::)  The correct hood will not vignette.  The 18-55 takes the EW-60c (the 'W' is for wide angle), the 55-250 takes the ET-60 (the 'T' is for...you guessed it...telephoto). I presume you used the ET-60 on your 18-55, and that's why you got vignetting. The EW-60c fits on the 55-250, also...and would be totally useless in terms of protection from flare.

I do not know who to believe now.

Of course, you should believe the outfit trying to get you to buy their 3rd party hood, because the company that makes the lens clearly doesn't understand how to design a hood to match the lens they designed.

Sounds like you really want a petal hood.  It'll look so much cooler and fancier than the one designed by Canon, making you look like a cooler, fancier photographer.  How you look is more important than the pictures you take, anyway. So please, just get the petal hood. Be sure to do a lot of focusing from close subjects to far ones, while people watch. You will want to call lots of attention to that petal hood as it rotates with the front element. Heck, maybe it won't even vignette when it does that. Also, I really like the convenience of the screw-on one the guy in the first video bought, too. You should get that exact one, because not only will you look like a better photographer, it'll be a lot easier than the pesky, reversible bayonet mount Canon has for that lens. </sarcasm>

Just get the Canon hood or a knockoff that looks like the Canon hood, mmmm'k?

6184
Lenses / Re: UV filters (any difference?)
« on: March 03, 2013, 11:32:14 PM »
You do not need UV filter because the Canon L lens already got UV inside the lens. All you need is the best clear protector filter like B+W clear MRC protector filters to protect your expensive lens.
Where did you get that piece of information?

The sensor in a current dSLR is effectively insensitive to UV light (I've empirically tested this with a 7D and 5DII, an appropriate light source with UV/Vis emission, and a set of narrow bandpass filters).  Therefore, for a dSLR there is no difference between using a clear filter and a UV filter. My advice is to get whichever is cheaper and/or more readily available for you.

6185
EOS Bodies / Re: How do I set button to use only center AF point?
« on: March 03, 2013, 08:20:15 PM »
Your 6D has something the Rebel lacked - an AF-ON button. That's normally used for back-button AF.  Go into Custom Controls (apologies if the 6D doesn't have that, but I'm pretty sure it does), set the shutter button to metering start, and the AF-ON button to metering+AF start.

6186
Lenses / Re: UV filters (any difference?)
« on: March 03, 2013, 08:17:18 PM »
Get the B+W XS-Pro mount. It's a slim filter, but still has front threads so the regular lens cap fits.

6187
Lenses / Re: UV filters (any difference?)
« on: March 03, 2013, 07:27:07 PM »
A cheap filter will negatively impact your sharpness, and add flare.  A good filter will not reduce sharpness, and will only very slightly increase flare.  I'd go with B+W MRC (or Nano) or a high end Hoya.  Skipping the filter is better than a cheap one (but your 17-40 needs one to complete the sealing).

6188
EOS Bodies - For Stills / Re: Amazon vs B&H for purchase?
« on: March 03, 2013, 05:37:31 PM »
Congrats!

Doesn't really matter (as long as you're buying direct from Amazon, not a 3rd party even if fulfilled by Amazon). 

6189
Lighting / Re: Super DIY Remote Speedlites
« on: March 02, 2013, 04:52:32 PM »
Makes sense - thanks!

6190
Lighting / Re: Super DIY Remote Speedlites
« on: March 02, 2013, 04:01:32 PM »
I don't understand - how is the volume potentiometer going to control the flash output?

6191
EOS Bodies / Re: On the 5DM3 what is the difference
« on: March 02, 2013, 02:03:21 PM »
When you look through the view finder, the array of focus points is a matrix of small squares.  But each of those small squares also has an even smaller square in the center of it.  When using Single Point AF, you are using the larger, outer square for that point.  When using Single Point Spot AF, you are using the tiny square in the center of each focus point.

Just to be clear, with Spot AF the actual AF point is still slightly larger than outer square.  The area being used for AF isn't nearly as small as the little inner box, that 'double' box is just the indication that Spot AF is being used.

6192
EOS Bodies / Re: On the 5DM3 what is the difference
« on: March 02, 2013, 12:31:57 PM »
Spot AF reduces the effective size of the AF point. With single point 'regular' AF, the actual AF point is quite a bit bigger than the little box in the VF (basically, the real points on the AF sensor almost touch).  Spot AF restricts the AF point size to only very slightly larger than the little box that represents it in the VF. Spot AF is useful for macro shooting, I also use it with small birds in thickets. It's bad for moving subjects.

On the 5DIII, spot metering is always in the center (only 1-series bodies can link spot metering to the selected AF point).

6193
Lenses / Re: Canon 100-400 f/4-5.6L IS II Leaked!!
« on: March 02, 2013, 06:54:03 AM »
Sorry, but the attempt is pretty lame.  If you're going to put up a fake 100-400, your fake should show focal length markings somewhere.  No numbers around the zoom ring?  More importantly, you're showing a non-extending zoom and it's too short to be 400mm (unless it's a DO lens, in which case you've got the wrong color stripe).  Better luck next time.

6194
Software & Accessories / Re: Good GND filter to go with new Lee system
« on: March 01, 2013, 09:35:36 PM »
The 4x6" Lee (100x150mm), the 150x170mm are too big for the holder. That's the right S-R, though.

6195
Software & Accessories / Re: Good GND filter to go with new Lee system
« on: March 01, 2013, 08:08:54 PM »
NA, any suggestions for a soft 3 stop then? I like the idea of Glass of course, resin is find too I guess.

Personally, I plan to get a 4" CPL and 3-stop grad hard and soft from Lee, and a 3-stop reverse grad from Singh-Ray.

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