April 16, 2014, 07:46:37 AM

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Messages - neuroanatomist

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1
Lenses / Re: Sigma vs Zeiss vs Canon
« on: Today at 07:27:46 AM »
I totally doubt that Canon makes lenses with soft edges on purpose. I think the soft edges are a result of technology limitations and cost saving.

In the case of the 50L (both of them), it was an intentional design decision by Canon.


I'm pretty sure that you can introduce spherical aberration through plugins or other software components if you really so desire. What you can't do is correct for poor image quality at capture time.

There are polarization effect filters for post-processing, but they cannot properly replicate the effects of having a CPL on your lens at capture.  Similarly, adding spherical aberration in post will not correct for poor bokeh in the captured image. 


Anyway, in the main the comments above about justifying Canon's current design and product are more about trying to ensure that people who worship Canon find a way to present Canon's offering as good and justified so that they feel good about owning Canon products. That's it. I'm sure someone will argue here that this comment is wrong...

Comments like the above are mainly about bashing Canon, made by people who have an inadequate grasp of the concepts behind lens design (and in one case, the inability to distinguish a lens from a camera). 


...but you don't see anyone saying that they wish the 70-200/2.8 II had soft focus like the 50/1.2L and so on.

Not in those words, no.  But plenty of people have said that they prefer the bokeh of the MkI versions of the 24-70/2.8 and 70-200/2.8 IS, or at least acknowledged the less-that-stellar bokeh of the MkII versions.  When push comes to shove, they may not want to trade sharpness for better bokeh, but I suspect many people aren't even aware of the trade-off. 

2
Lenses / Re: Lens calibration
« on: April 15, 2014, 11:37:38 PM »
Reikan suggests 50 x focal length in millimeters for FoCal, I don't have a reason why off the top of my head but it seems to work.

The reason is that at the optimal AFMA can change with distance, but by 40-50x the focal length (and a bit less for very long lenses), that variation has asymptotically evened out.  The caveat is that if you usually shoot with a particular lens at a much closer distance, you should test at that closer distance.  Personally, I test lenses at 25x and 50x the focal length, and if the optimal value is different, I consider how I usually use that lens in deciding on a value to set. 

3
Reviews / Re: Another Interesting (or just Meaningless?) Comparison
« on: April 15, 2014, 11:00:38 PM »
"Subjective Quality Factor," it sounds arbitrary, made up, and, well....subjective.

I know it's not, it's been around for 40 years and was first published by Kodak.  But still, I wish Ed Granger had come up with a different name.

For those who are curious, Bob Atkins discusses PopPhoto's use of SQF (although he misspells Granger's name).

4
EOS-M / Re: Canon EOS M3 in Q3 of 2014?
« on: April 15, 2014, 10:47:00 PM »
...has a special "cat mode" for taking pet pictures...

I have a friend who could really use that.  She takes cat pictures by the hundreds!

To be fair, she owns a pet-sitting business and they're 'look, Fluffy is doing fine' pics for the vacationing pet parents, but still...HUNDREDS OF CAT PICTURES!!!

5
EOS-M / Re: Canon EOS M3 in Q3 of 2014?
« on: April 15, 2014, 10:03:29 PM »
Hi,
Looks like Canon is pasting feathers on a turkey hoping it will fly.  They ought to lay off the whole group that
worked on this - and then fire the management team that approved it.
    For your info, wild turkey can fly... :P

    Have a nice day.

Yep.  I've seen them perched high in the pine trees at our summer place.  Guess I'll have to get a photo one of these days.

Now, now...give dickgrafixstop a break.  Maybe all that time spent standing in the rain, staring up open-mouthed at the sky, made him forget the other things turkeys do.   ;)

6
EOS-M / Re: Canon EOS M3 in Q3 of 2014?
« on: April 15, 2014, 07:33:05 PM »
Looks like Canon is pasting feathers on a turkey hoping it will fly.  They ought to lay off the whole group that
worked on this - and then fire the management team that approved it.

I guess you missed the point that the EOS M was the second best-selling MILC in Japan (which alone accounts for >25% of the MILC market) last year, beating out all models by Fuji, Olympus, and Panasonic, and behind Sony's best-selling model by only a narrow margin.

But you didn't like it, so it was a failure.  ::)

7
Pricewatch Deals / Re: Calumet Store Closing Sale
« on: April 15, 2014, 06:50:08 PM »
Thanks for the heads up!  I think I'll head across the Charles River to the Cambridge location tomorrow...

8
Canon General / Re: "MAP" pricing....How long will it last????
« on: April 15, 2014, 06:07:36 PM »
...I see the downside to massive internet retailers like Amazon, that have little to no investment in the community. They don't pay the taxes that support schools, roads, police, etc. etc.

On the other hand, like most consumers, I am interested in maximizing my purchasing power.

To the extent that sales taxes support community services, Amazon is now collecting them on behalf of many states (mine included).   Even without that, consumers in most states are obligated to pay use tax on items purchased from another state and intended for use in the home state.  I'm sure all law-abiding citizens declare such purchases on their state tax returns...  ::)

9
EOS-M / Re: Canon EOS M3 in Q3 of 2014?
« on: April 15, 2014, 04:47:26 PM »



Is that you?  ;)


Nope, that's RRS owner Joe Johnson.  After I bought the TQC-14, though, I couldn't resist trying it out myself!  :D

10
Lenses / Re: New 50mm Sigma ? There are other options !
« on: April 15, 2014, 01:08:36 PM »
Quote
Photography is just a hobby for me & take photo of my kids around the house :)

This is hardly the kit list for someone who take pics of their kids at home
If you are not using that lot to generate some income then there is something wrong !


Photography is a hobby for me, too, and I also shoot photos of my kids around the house.  Here's one, with the 1D X and 600mm f/4L IS II…


11
EOS Bodies / Re: Has anyone confirmed the 12 FPS on the 1DX?
« on: April 15, 2014, 11:38:44 AM »
Record audio or time a 2-sec burst.  I get 12 fps with appropriate settings (1/1000 s or faster, lens wide open, ISO 25600 or less).

12
Photography Technique / Re: Photographing through fencing
« on: April 15, 2014, 11:30:09 AM »
Get as close to the fence as possible, touching it with your hood if you can.

The OP mentioned a restriction requiring a distance of at least 3 feet from the fence.  I don't know that shots like the great ones you posted would turn out quite so well with that much separation from the fence.

13
Lenses / Re: Sigma vs Zeiss vs Canon
« on: April 15, 2014, 11:14:41 AM »
But but what about the people who want a good quality 50mm and are willing to pay appropriate money?

And don't you think lots of people will buy the Sigma?

I think the Sigma 50/1.4 will be pretty popular. 

We've seen Canon recently bring out several new EF non-L primes with IS (24/28/35), and I expect we'll see an updated 50mm with IS soon.  The IQ of those new lenses is quite good (compare the 35/2 IS to the Sigma 35/1.4 Art, for example).

14
Lenses / Re: Sigma vs Zeiss vs Canon
« on: April 15, 2014, 11:00:31 AM »
Does Canon not want its customers to have better?

Canon wants its customers to buy lenses.  The Canon 50/1.8 is among their most popular lenses, primarily because it's cheap.  The 50/1.4 is also quite popular.  A lot more people are going to buy a $400 lens than a $950 or $4000 lens.

15
Software & Accessories / Re: The best tripod ...
« on: April 15, 2014, 10:45:32 AM »
No, I didn't. From what I've read, I understand that Manfrotto and Induro offer the best quality in terms of sturdiness and strength.


Read more.

Also, don't use manufacturer's load ratings as a guideline, they are useful for comparison within a brand, but effectively meaningless for comparison across brands.  A Manfrotto 055CXPRO3 is rated for 17 lbs - does that mean it can hold 17 lbs without breaking, hold 17 lbs with complete stability and no vibration, or something in between? 

The Really Right Stuff TQC-14 is their 'travel tripod', the lightest and weakest one they make.  It's rated for 25 lbs.  That load capacity might, just might, be a bit conservative.


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