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Messages - Mt Spokane Photography

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4786
Canon General / Re: Post-Processing Woes
« on: February 10, 2013, 03:06:54 PM »
It happens, particularly with older images.  Perhaps I've learned something new in the ensuing time that can enhance a previous image. 

4787

That operate at 1/4 to 1/3 the speed of my CF cards? I can get up to 1000x CF cards, vs. 600x SDXC cards. Not only that, CF cards have a much lower latency, and buffer clear time with CF is three to five times faster (4-7 seconds for CF, 20 seconds for SDXC.) Even with the best of the best SDXC cards, they are still a slouch compared to even a moderate UDMA-7 CF card. I'll take the lower latency of CF at the same speed as an SD any day, even if it costs several times as much (although I'd say, given that I buy Transcend CF cards that have yet to fail me even once, the conversion rate is more like 3-4 SD cards per CF card, at mot.)

You are being generous with your estimate of SD card speeds.
The rated speeds for SD cards are only after a fresh low level format or when reading data.  Once the card has been written to and then formatted with the normal in camera format, write speeds seldom exceed 5-10 MB/sec, even if its a really fast rated card.  The issue is the time it takes to clear memory cells in order to write new data.  CF cards do this much faster.
 
Thats also why it is such a problem to use a CF and SD in the same camera and write to both.  If doing that, get a dozen fast SD cards and low level format them.  Then, after transferring and backing up your images, do a low level format.  this will substantially improve their write speeds and they will go from being almost useless for large Raw or video files to merely slow.

4788
Video & Movie / Re: The Blizzard of 2013 Time Lapse
« on: February 09, 2013, 11:42:14 PM »
If possible, post some stills of the Snow tomorrow.  How much did you get in Cambridge?  I hope that you and your family are all safe, don't do anything foolish.  I've seen two feet of snow in 12 hours in Seattle a few times, but not 40 inches!
 

4789
Technical Support / Re: Possible 7D Autofocus Issues
« on: February 09, 2013, 11:00:02 PM »
You mention that it has issues with still subjects?
 
Puut the camera on a tripod and take images of a flat wall about 15 ft away with a 50mm focal length.
 
Thak 10 shots moving the focus to infinity before each shot.  Make sure your shutter speed is at least 1/100 of a second, and set the aperture to wide open.
Variance in critical AF is normal, but 8 or 9 should have sharp focus.
That should show you that the focus is ok, or that it is bad.  The worst thing is when its erratic and every other shot is off.  That can be the camera or the lens, or a combination of the two.
Many of us went from a 8 or 10 mp camera to the 7D and started viewing images at 100%, and were appalled.  It takes more care and twice the shutter speed to get the sharp image you are used to seeing at 100%.  Once you get it down, then your images will be sharp, but its still a challange when you view them at 100%.
Now, just imagine those D800 users when they went from their 12mp D700 to the D800.  They had to learn to be very careful, and even then, viewing at 100% can be frustrating. I was one of them, but I went from a 5D MK II and 7D to the D800.  After a couple of thousand images, I got really tired of the long time it took to post process images and sold it, so I now have a 5D MK III.
 
Here is one of my first batch of images with the D800.  It was a struggle!

 
100% crop ---Frustrating and Fuzzy!!

 
By the second event, things were better. Same camera and lens, more experienced photographer :)

 
100% crop  Much better, but getting the apparent sharpness of a 30D at 100% requires ultra careful shooting, and thats not me!

 
 

4790
Lenses / Re: Would a 14-28mm f/1.8 be possible?
« on: February 09, 2013, 09:32:57 PM »
Of course its possible, but it is much more difficult and expensive to build a wide angle lens than a telephoto, who would buy a $50,000 lens like that.  They will make it for you if you guarantee  250 orders.

4791
Software & Accessories / Re: Lightroom and SDXC
« on: February 09, 2013, 07:52:32 PM »
Lightroom has nothing to do with SDXC or any other card type.  It merely works on a image file that you load into a computer from your camera or memory card.
 
However, a bad card or card reader can make life miserable for you.  I'd avoid savinng money by buying a cheap card, and stick with one of the better brands.  Same with CF reader and USB cables.
 

4792
Lenses / Re: Autofocus in AI-Servo performance in low light
« on: February 09, 2013, 07:46:17 PM »
Do not use AI Servo in low light 
It has little to do with the lens.  Its very difficult for a camera to find focus in low light and takes a second or two.  No way can it AF continuously in very low light.
Just use one shot and center point if the light is very low.

4793
I would not buy a 60D because it does not have AFMA.  That means that the body cannot be tuned to my fast prime lenses.  If you are using smaller apertures where the focus errors get lost in the depth of field, a 60D is fine.  But, if you want to move up to fast wide aperture lenses, they always have a little AF error, and sometimmes a lot of error.  I'd take a used or refurb 7D over a 60D any day.  That doesn't mean that the 60D is not a fine camera, it just means that you might be disappointed if you try to use fast lenses with it.

4794
Lenses / Re: AFMA Telephoto/Wide Discrepancy
« on: February 08, 2013, 09:30:12 PM »
My new 35mmL was +2 on m 5D MK II and +17 on my 1D MK III, I sent it to Canon with a explanation, and they adjusted it on their reference 1D MK III.  After that, it was perfect.
You can exchange it or do the same.

4795
EOS Bodies - For Stills / Re: Opinion on upgrades
« on: February 08, 2013, 08:26:40 PM »
The 17-55 is much better than the 17-40, but its also more expensive.  If you want to go to FF, get a 6D and a 24-105mmL.  A big step up IMHO.

4796
EOS Bodies - For Stills / Re: 5D III Dynamic Range
« on: February 08, 2013, 08:23:38 PM »
RLPhoto, can you share me your pop corn... i am running out of it  ;D

*passes popcorn

I hope its a big bag :D

4797
Lighting / Re: Batteries to speedlites
« on: February 08, 2013, 08:21:09 PM »
A $100 rechargable battery for a speed light when you can buy four eneloops for under $10 and have 2 or three backup sets, all for about $30?
Usually, the question, and its a reasonable one, is why not use the same battery in my camera and speedlite?
 
 Aside from the fact that different cameras use different batteries, its a issue of current draw.  Camera batteries are optimized for low current draw and high shutter count.  A high current LI-ON battery will not last long in a camera.

4798
EOS Bodies / Re: Need seasoned advice - keep 5D Mark II or NO?
« on: February 08, 2013, 08:15:30 PM »
If you cannot see a difference between the images you get with your current camera and those from the 5D MK II, by all means sell it.  Not everyone likes a FF camera, the shallow depth of field can be disconcerting after using a smaller sensor.

4799
Lenses / Re: I've tried the 200-400 today! :D Very happy
« on: February 08, 2013, 06:30:07 PM »
How heavy is it?  How long can you hold it?

Could you hold a suitcase with one thousand   $10 bills out like that?

Something tells me you'd still come up another half-a-suitcase short...
If you are in the UK, you'd need bigger bills or a bigger suitcase.

4800
Canon General / Re: What's your definition of "Pro"?
« on: February 08, 2013, 12:01:29 AM »
Dictionary definition and anyone who takes compensation for their work. No matter how badly it looks. :)
I think the Dictionary definition defines the skill level too.
The main criteria for professionals include the following:
  • Expert and specialized knowledge in field which one is practicing professionally.[5]
  • Excellent manual/practical and literary skills in relation to profession.[6]
  • High quality work in (examples): creations, products, services, presentations, consultancy, primary/other research, administrative, marketing, photography or other work endeavours.
  • A high standard of professional ethics, behaviour and work activities while carrying out one's profession (as an employee, self-employed person, career, enterprise, business, company, or partnership/associate/colleague, etc.). The professional owes a higher duty to a client, often a privilege of confidentiality, as well as a duty not to abandon the client just because he or she may not be able to pay or remunerate the professional. Often the professional is required to put the interest of the client ahead of his own interests.
  • Reasonable work morale and motivation. Having interest and desire to do a job well as holding positive attitude towards the profession are important elements in attaining a high level of professionalism.
  • Appropriate treatment of relationships with colleagues. Consideration should be shown to elderly, junior or inexperienced colleagues, as well as those with special needs. An example must be set to perpetuate the attitude of one's business without doing it harm.
  • A professional is an expert who is a master in a specific field.

In the USA, the Government Defines Professional workers, and if you are working for someone else, it  determines how you are treated pay wise.  A professional is not paid hourly, or paid overtime, for example.  I hold a professional Engineers license, tough to get in my state, fewer pass the exams than attorneys.

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