April 17, 2014, 04:04:14 AM

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Messages - Don Haines

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46
EOS Bodies - For Stills / Re: Not sure which Canon body to get
« on: April 06, 2014, 07:18:20 PM »
Hi, could you please show how you arrived at this formula!   :o
BODMAS being the first principle, (0x)10 I still recon this equals zero even if x is an unknown, anything (x) times 0=0, 0x10 =0 so are you saying 6D +0 = 7D? Or is my calculus (basically unused for 20 yrs) really that rusty?   :'(
I stand to be corrected, perhaps we are using cypher principles rather than mathematical principles?  ::)  ;D  ;D

Cheers Graham.


For the uses listed, the 6D is the better choice, budget permitting. 

6D

I was going to say +1, but 6D + 1 = 7D, and that's not what I mean.  ;)

No, 6D + 1 = 6E.  6D + (0x)10 = 7D.  :D

I saw it... and I thought there would be a joke somewhere than I'm not getting. 

6D9 + 1= 6E  Ok... Then we need to solve for D since that is use in the next equation.

D=(6e-10)/6

ok

So plug that into the next equation which gives us...


6*(6e-10)/6+(0x)10=7*(6e-10)/6

So... reduce... and we get to

6e-10+0=(42e-70)/6

6e-10=7e-11.66
6e=7e-1.66
1.66=1e
ergo e=1.66

plug that into the equation above...

D=(6*1.66-10)/6
d=(10-10)/6
d=0/6
d=0 


So yeah...

I loved calculus 1 and 2 and got my ass kicked in calc three... so one day when I'm retired... I'll happily go back and audit some calc classes... for shitz and giggz.

It's counting in Hexadecimal...

0 1 2 3 4 5 6 7 8 9 A B C D E F 10 11 12 13 14 15 16 17 18 19 1A 1B 1C 1D 1E 1F 20 21.....

67 68 69 6A 6B 6C 6D 6E 6F....

and 6D(hex) + 10(hex) = 7D(hex)

Sad thing is, I'm old enough to have programmed bootstrap loaders in Octal and binary.... loading it in with toggle switches...


47
Animal Kingdom / Re: BIRD IN FLIGHT ONLY -- share your BIF photos here
« on: April 06, 2014, 04:34:17 AM »
Few more of my favorites share with everyone.

1Dx with 1.4x extender
420mm

F11
1/1000
ISO 400

F5.6
1/5000
ISO 800
The second shot is perfection!

48
Technical Support / Re: I was so mistaken!
« on: April 05, 2014, 10:35:35 PM »
Focal length and aperture are lens properties and the lens does not change no matter what body you put it on!
 
There are a ton of confusing articles that cause confusion  because of the terminology used.  People will glance at that title and become convinced that its true.
 
Where the confusion comes in , is that some assume the same lens to subject distance, while some assume the same composition (move the camera further away).
 
If you move the camera further away to get the same angle of view as FF, then the depth of field is different.  If you keep the camera at the same distance, then the angle of view is different.
 
The focal length and lens aperture never change.
You hear so many complicated explanations, yet the answer is so simple.... A crop sensor samples the central portion of the image, usually at a higher density....

It is incredible how many people believe that the optics magically change when you mount the lens on different bodies...

49
He was either, an idiot, misinformed, or trying to con you.

You do not need a UV filter on any lens ever, they are useful particularly at higher altitudes when using film. Some/many swear by them as protection for the front element as an unrelated side use too. All digital camera sensors have UV blocking filters built in.
Agreed!

UV and skylight filters are a holdout from the days of film. Your DSLR is not sensitive to UV... It is not going to show up in pictures and it will not harm your sensor.

You can use a filter to provide protection to your lens, but unless it is a high quality filter it will degrade your image. You will not find a high quality filter at best buy.

50
Animal Kingdom / Re: Show your Bird Portraits
« on: April 05, 2014, 11:52:31 AM »
This guy was about 100 feet or so from the Sandhill Crane.  Waited on him for 2-3 hours to fly around.  Nope...

NICE!

I love owl pictures....

51
Animal Kingdom / Re: Show your Bird Portraits
« on: April 05, 2014, 10:53:31 AM »
First Great Blue Heron seen this year.... the shot was through a chain link fence and focused so as to make the links of the fence almost invisible. If you look closely at the picture you can make them out... they are the slightly brighter diagonal diamond pattern.


Pretty good result considering the chain fence in the way!

After seeing this, I guess I won't worry as much anymore about a little dust on the front element.  ;D

There was a great post from Roger at Lens rentals about dust on lens.....

http://www.lensrentals.com/blog/2011/08/the-apocalypse-of-lens-dust

52
Lenses / Re: Philosophical question about Sigma Lenses - Why?
« on: April 05, 2014, 10:44:58 AM »
As for my question about what’s the Sigma lens to have, you’re right that it’s an invalid question since it’s not specific enough… too general of a question. In the immediate future I need to do macro photography, closes ups of specific objects for graphic design projects like catalogs. What I really want to do is to astro-photography.

Sigma (and Tamron) are companies in transition. For a long time (with a few exceptions) both have been known for fairly poor quality optics but at a great price.. Recently, both have been coming out with good to great optics at a good price.... The Sigma ART lenses and the Tamron 150-600 shocked everyone. For wide skies astronomy, I would be very tempted with the 35F1.4... It is supposed to be a great lens, although I have not heard anything about it from the astronomy crowd..

If you do decide to go into astrophotography, look at tracking mounts.... they will do more to help you than and camera or lens will...

53
Hi,
In another thread on this website, there is a lot of posters from this website that are (or at least were!) absolutely certain that 4K wouldn't take off this year and that Canon wouldn't need to include it in their cameras this year. Seems to me that everyone else thinks that now is the right time to be delivering 4K capability.

If the 7D mark II arrives this year without 4K, Canon will be at the station looking at the caboose as it disappears into the distance...
That really made me smile... and brings up a mental image of Mr. Canon and Mr. Nikon at the train station filming the departing train in 1080 at 30hz, while on the train, the lovely ladies Miss Sony, Miss Panasonic, Miss GoPro, Miss Red, and a host of others are waving goodbye :)

I think I'll go take my GoPro and shoot some 4K video, and when I'm done I'll grab my p/s and try to capture some blue jays in flight at 240hz....
    Then they realized they left all the consumers at the station...  ;D

    Have a nice weekend!
But then again, sometimes missing the train is a good thing :)

54
In another thread on this website, there is a lot of posters from this website that are (or at least were!) absolutely certain that 4K wouldn't take off this year and that Canon wouldn't need to include it in their cameras this year. Seems to me that everyone else thinks that now is the right time to be delivering 4K capability.

If the 7D mark II arrives this year without 4K, Canon will be at the station looking at the caboose as it disappears into the distance...
That really made me smile... and brings up a mental image of Mr. Canon and Mr. Nikon at the train station filming the departing train in 1080 at 30hz, while on the train, the lovely ladies Miss Sony, Miss Panasonic, Miss GoPro, Miss Red, and a host of others are waving goodbye :)

I think I'll go take my GoPro and shoot some 4K video, and when I'm done I'll grab my p/s and try to capture some blue jays in flight at 240hz....

55

Okay, maybe not the most appropriate example- I get your point.
What I said was processing power doesn't need to compromise efficiency.
An example closer to home: 5D III vs 5D II- 950 shots vs 850, using the same battery.

In any case why am I even discussing D4s and 1D X. I won't ever be able to afford any of those. Okay, peace...  :-X

Haha, never say never!  I agree, power efficiency does not always factor in.  If a processor is designed to better make use of the power it consumes, then it could obviously peform more computing tasks with the same or less power consumption.
agreed!
A lot of the improvements in processing power have come from using lower voltages (less heat waste) and finer lithography, making the electrical paths smaller and thereby speeding up the processors. Both of these advances decrease power consumption.... The next big factor is variable processing clock speeds, enabling chips to slow down and use less power when the demand is lower.... so in a way, you could say that increased computing power is linked to lower power consumption.

Hmm, sounds like variable clock speed could be interesting.
The variable clock timing has been around for a long time. For example, if you look at a PC, under normal use there is only a few percent use on the CPU, but if you run something that stresses the system you see the load jump up to 100 percent and you can watch the temperature rise. In the PC world you can slap on a bigger heat sink and add fans, but good luck trying to do that with a DSLR.....

I suspect that this is one of the reasons why Canon and Nikon are so conservative with their video performance.... You know that the camera has the power to do more, but if you ran the higher resolutions you would get into cooling problems.

56
Animal Kingdom / Re: Show your Bird Portraits
« on: April 04, 2014, 09:37:41 PM »
First Great Blue Heron seen this year.... the shot was through a chain link fence and focused so as to make the links of the fence almost invisible. If you look closely at the picture you can make them out... they are the slightly brighter diagonal diamond pattern.

57

Okay, maybe not the most appropriate example- I get your point.
What I said was processing power doesn't need to compromise efficiency.
An example closer to home: 5D III vs 5D II- 950 shots vs 850, using the same battery.

In any case why am I even discussing D4s and 1D X. I won't ever be able to afford any of those. Okay, peace...  :-X

Haha, never say never!  I agree, power efficiency does not always factor in.  If a processor is designed to better make use of the power it consumes, then it could obviously peform more computing tasks with the same or less power consumption.
agreed!
A lot of the improvements in processing power have come from using lower voltages (less heat waste) and finer lithography, making the electrical paths smaller and thereby speeding up the processors. Both of these advances decrease power consumption.... The next big factor is variable processing clock speeds, enabling chips to slow down and use less power when the demand is lower.... so in a way, you could say that increased computing power is linked to lower power consumption.

58
Landscape / Re: Deep Sky Astrophotography
« on: April 04, 2014, 07:08:48 PM »
stop siding with him and kissing his ass.
He has helped me many times with advice on many subjects.... what have you done for me?

I didn't realize you felt such hostility towards me.  Do I have to do things for you in order to be treated with common decency?  I don't recall disrespecting you, your opinions, or your photography.  Sorry if you feel that way.

I feel no hostility towards you and I enjoy reading many of your posts and comments too.

I just wish you and Jrista wouldn't fight.. it detracts from everyone.

Sure seems that way to me, but you and him are old buddies, I guess I can understand that.  There are some people that will never get along.  I respect some of the work he does, and some of his knowledge, but I don't respect his hatred, anger, immaturity, antagonism, and self righteousness...he is deluded where I am concerned.  He keeps claiming I don't know him.  I say the same, he doesn't know me.  All we know is what we read on here, and from day one (over a year ago) he has been extremely hostile and insulting to me...sending me insulting private messages.  Nobody is perfect though.  But I will not be called a small and weak man, and then have someone else portray me as the instigator in that exchange (as you did), because I was not.  He started the name calling, and he got away with it.  The moderators like him, they don't like me.  I hope you can understand that.  I certainly know you would not tolerate it, if it were directed at you.  I refuse to be insulted for simply sharing my own experiences, by someone who has no experience with a product, yet types in caps as if to emphasize his pronouncements as "factual", and anyone who disagrees, is somehow in error.  John Rista is not a god.
I apologise for my comment. It was ill conceived and in poor taste. I hope we can move past it and be friends.

59
Landscape / Re: Deep Sky Astrophotography
« on: April 04, 2014, 07:00:32 PM »
@Don & @Reinz: I'm really glad to hear you guys are interested in astrophotography. :) I think this is a GREAT time to get into the field...the technology we have today makes the cost of entry relatively low (if all you want to do is very wide field work, all you really need is a $800-$1000 mount, and your DSLR + lenses). If you find you really like it, high quality equipment can be purchased for only a few thousand dollars more, such as an astrograph OTA (like the AT8RC) and maybe an entry-level cooled astro CCD, the cheapest of which cost around $1500, about the same as a midrange DSLR.

The technology is pretty darn good, too. With an entry-level Atik CCD camera, people are producing high quality images that rival what NASA was getting a decade ago. Even highly advanced software packages for processing have become cheaper. It used to be that dedicated astro processing tools cost about $1000. Today, you can buy PixInsight, an extremely powerful processing system, for around $250.

Anyway, great time to be getting into astrophotography. I wish you guys the best, it's very fun (especially if your more technically minded, and enjoy a challenge.)

I started with a really crappy 3" refractor telescope and got hooked!

I picked up a Celestron Advanced GT tracking mount... it's nice and solid and seems to track quite well. After lots of fiddling with aligning mounts, I ended up putting in some patio stones in the yard, made sure they were as level as possible, and marked where the tripod legs go... instant alignment! I have an 8" reflector telescope that I can use, or I have a mounting rail with a quick release camera mount. I have shot video of planets through the telescope, 2X barlow, and a 60D and run the images through Registax and I have just started to get interested in image stacking for nebulas...

The more I learn, the better the images get, and that just makes me want to try harder.

Backyard EOS seems like a perfect tool for capturing images of nebulas.... what software do you recommend for processing the images?

For planetary images, it's been recommended that I get a Celestron Neximage 5 CMOS Solar System Imager Camera to use instead of my DSLR... and I have been thinking of getting a 6D to replace my 60D for night skies... the 60D is real noisy!

60
Landscape / Re: Deep Sky Astrophotography
« on: April 04, 2014, 06:34:41 PM »
stop siding with him and kissing his ass.
He has helped me many times with advice on many subjects.... what have you done for me?

I didn't realize you felt such hostility towards me.  Do I have to do things for you in order to be treated with common decency?  I don't recall disrespecting you, your opinions, or your photography.  Sorry if you feel that way.

I feel no hostility towards you and I enjoy reading many of your posts and comments too.

I just wish you and Jrista wouldn't fight.. it detracts from everyone.

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