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Messages - Mt Spokane Photography

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Lenses / Re: Lens align pro or Spyder lenscal
« on: September 05, 2012, 02:27:05 PM »
I'm thinking about Reikan FocCal Pro, do they provide setup distance for each lens?

You choose the distance.  Canon recommends 50x the focal length, LensAlign recommends 25x the focal length (i.e. about 16' and 8' for every 100mm of focal length, respectively). 

Personally, I test all lenses at both 25x and 50x the focal length (and multiple focal lengths for zooms, wide, tele and 1-3 in between), then look at the overall results to decide the AFMA value(s).  It's going to be a compromise, more data drives a better decision.  I take into account the subject distances with the lens (close for the 85L, far for the 100-400, etc.), the usual DoF (weight close distance more with wide lenses).  It means lots of testing, which is why the automation is great.
For fast lenses, f 1.8 and faster, I tend to prefer the 25X distance, but for telephotos that are used mostly on far away objects, I use 50X if I can.
My Canon 100mm L is a puzzle.  A totally different AFMA at close distances of a couple feet or less than at normal 7-20 ft distances.

PowerShot Cameras / Re: Canon PowerShot G12 Digital Camera
« on: September 05, 2012, 12:06:10 PM »
It is certainly worth waiting to see what is announced in the next week.  I don't expect more than the usual minor upgrades that will raise the price by 20%, so buying a G12 on sale is not a bad idea.  If smething earthshaking comes out, I'd consider replacing my G11, but I'm pretty skeptical.  The P7700 only goes to ISO 1600, and I use my G11 at ISO 3200 with usable results, so I'm wondering why it is claimed as a better sensor.
I hope Nikon's new P7700 is a good camera, Nikon has not produced any spectaular point and shoot cameras since about 2000 when I bought my CP990.  I still have it, and it still performs.  Its the lens that makes a difference, it was made in Japan by Nikon, not in China.

EOS Bodies / Re: Announcements Before Photokina
« on: September 05, 2012, 11:50:43 AM »
We should be getting leaks in two or three days, as more and more people become aware of the details.  It is true that new lens announcements are kept quiter than announcements for bodies, just not as many leaks.

Lenses / Re: Need advise/shared experience on repair of 100-400L
« on: September 05, 2012, 11:44:36 AM »
A freshly repaired Lens should be worth 80% of the value of a new lens, it might be in better shape IQ wise than it was new.
Sell it after it is repaired, if you want new.

How 'bout a 35 mk2 ?  ;D
I think Nikon has one, but its no better than the Canon 35mm MK I

EOS Bodies - For Stills / Re: Canon EOS-1D X AF at f/8 with the Kenko 1.4TC
« on: September 04, 2012, 10:32:03 PM »
5.6 plus 2x = f/11 - there's no camera that AF at f/11.... :(

My 1D Mark IIN and your 1D Mark IV will work on f/8 but not f/11 - none does :)

hope this helps your inquiry.
My 1D MK III would AF at F11 with my 70-200mm f/4L and 2X TC.  My 40D also worked at F/11 with some lenses.  Obviously, you needed a non reporting TC, but it did Autofocus.

Lenses / Re: Canon 24-70/2.8L II is official delayed - again
« on: September 04, 2012, 10:28:05 PM »
Scandinavian Photo,, in Sweden have shipped my 24-70/2.8L II today! So the information that I received from Canon was in error.

Unfortunately, an misunderstanding the 24-70 is not shipped to me  :-[

Sue them for emotional distress... we will join in.

Explain yourself Human!

I received information from the company that my lens was shipped. But they have not received any lenses yet.

They probably meant that the lenses were being shipped from Canon to to them.  My local retailer lets me know when Canon has notified him of a shipment for a product I have on order, so it can just be a misunderstanding of what they were telling you.

EOS Bodies - For Stills / Re: New to Canon Rumors
« on: September 04, 2012, 10:19:36 PM »
Hello all,

This is my first post in the forum so please be gentle with me.. I have been reading through the forum for the past six months tracking the slow progress of the 1DX and other things that have caught my eye during this time..

Now comes the sad part for me, as I was playing around with my new toy today I was taking some pics of my 3 year old black lab playing with a coiled pipe.. I got some great shots as she was jumping on this pipe right up until I got a mechanical error... I didn't think much of it as I thought it was a firmware issue. Removed the battery fired it back up fine, go to look through the viewfinder to see a weird looking line across... So I took the lens off and BANG out fell the focus screen on to the floor :( so now I have a scratched dirty focus screen.. I tried compressed air to knock off anything before placing it back in the camera but its not good... I feel a little miffed, Im going to contact CPS tomorrow and see what they will do.. I should have photographed it with one of my other bodies before I did anything, now I feel like they might turn around and say I have to pay for the repairs :(

Anyway sorry that was such a long intro to me, hope to hear back


Alex, Welcome to Canon rumors.  I'm sorry to hear about the focus screen, it is probably not a big deal.

Indeed, it might have been you accidentally releasing it.

The focus screen will drop down if you happen to press the tiny release tab for it at the top of the mirror box.  If you miss seeing that happen, it will drop out and get dirty.

The good news is that a new one is relatively cheap, they come as a kit with a tool to remove and install them.  Its a easy job you can do yourself.

Forget cleaning one, its a waste of effort.

In the USA, dealers sell the stock screen for about $35, but in the UK, they might come more dearly.  I'm not sure if the 1D X stock screen is the same as the older models, I know that some of the older ones mess up exposure if used in the 1D X due to the new exposure system.

See pg 327 of your manual.

Installation instructions come with the replacement focus screen.

Lenses / Re: Where can I find a 24-70 Series 1 sample file?
« on: September 04, 2012, 10:05:47 PM »
Sample images won't tell you much, many of the lenses are not up to par, all of the lenses have curvature of field.  Lens testers have had a tough time trying to find even one good one, even after sending them to Canon for adjustment.
I have some from the 5 24-70mm L lenses I've had, but they are so bad, I don't post them.
The really good ones (apparently there are some) don't seem to appear on the used market.
I'll not consider the new one until I see a few carefully done tests.

Expect multiple announcements that week, It will be interesting to see what new offerings are announced.  The D800 is dropping in price, so they need something new to boost sales.

Lenses / Re: I bought a 24-70mk1 and it is working perfectly fine now but...
« on: September 04, 2012, 09:54:46 PM »
Everything wears out over time.  There are mechanical parts internal to a lens that wear, but nothing to worry about, just have a clean and check done every 25-50K shots, they will lube it and note any parts that are badly worn, which is unlikely.
What does cause issues is droppage, or even a sharp rap can crack internal parts, or decenter elements.
I've had five of the 24-70mm L lenses, none were worth the price I paid, my 24-105 was far better IQ wise.

EOS Bodies / Re: What is meant by Shutter count in 5D Mk III menu?
« on: September 04, 2012, 09:49:50 PM »
As in pg 338 of your camera manual??  Its the number of shutter actuations since the battery was recharged.  Did you put a new battery  in it, or one from another camera.
The number should go to zero after you recharge your battery.

Third Party Manufacturers / Re: Flat lens discovered in Harvard
« on: September 04, 2012, 04:07:28 PM »
This tech will in military and security use before it will ever hit the consumer market. :P
Yes, DARPA gives out quite a few grants for research to both Universities and to companies.  In fact, thats how we got the internet.

.... and a few other technologies beyond Internet :)

Yes, I've visited the DARPAheadquarters and bid on some projects as well as briefing them on our research before I retired. 
I first used the internet back in the mid 1980's before it really caught on.  Back then, it was unix commands only. We had dumb terminals networked to a VAX.   

Lenses / Re: 135mm + 1.4 extender _VS_ 70-200mm f/2.8 IS mkI
« on: September 04, 2012, 03:59:22 PM »
So my original question was specific to the MARK I version of the 70-200mm f/2.8 L IS.

Is the 70-200mm f/2.8 L IS MKI really that bad? Seems like everyone was loving it until the Mark II came out.
I''ve had several of the 70-200mm mk I IS versions.  Certainly, they are good lenses.  Their weakest spot is at or near 200mm, and since you would likely be using a TC with it at or near 200mm, it is disappointing. 
The non IS and the MK II are much better at 200mm and take a TC reasonably well.

Why is it posted as a png.  Thats not a useful format for editing.  provide a link in Raw.

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