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Messages - Mt Spokane Photography

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Lenses / Re: USB Dock of Sigma 35mm F1.4 DG HSM
« on: March 28, 2013, 04:07:08 PM »
So far, it doesn't exist.  Its been delayed.
There are a number of Canon Cameras that do not have AFMA, and users must sent their lens to Sigma to be adjusted, and hope its accurate on their camera.  This is bad for everyone.  If the lens is adjusted to the actual body, its a much better situation.  If you have multiple bodies with no AFMA, you will have to average things out or get all the bodies adjusted at Canon.

Lenses / Re: 24-70 f2.8L II or.....
« on: March 28, 2013, 11:53:58 AM »
In your position, I'd get the one I need. 
Only you know which, you did not give anyone a hint as to what it is that you currently photograph, or problems you are having.

i photograph everything.
i want to be able to have this range covered. i don't want to be pinned down to a specific use but rather to be used for a broad range of applications.
If you have 50mm as your widest lens, you are missing out on a huge range of focal lengths.
I'd get the 24-70L MK II.  I have the 35L and 24-105L, but am going o try the 24-70 to see if I can get by in low light.  It might be difficult.
I won't sell my existing lenses until I can see how I do with f/2.8 and extreme low light.  I will be at ISO 12800 and maybe higher.

Lenses / Re: 24-70 f2.8L II or.....
« on: March 28, 2013, 11:28:49 AM »
In your position, I'd get the one I need. 
Only you know which, you did not give anyone a hint as to what it is that you currently photograph, or problems you are having.

EOS Bodies - For Stills / Re: Shutter hangs on Canon 7D
« on: March 28, 2013, 11:26:16 AM »
You have mirror lockup turned on, read page 109 of your manual.
Its a good idea to understand what the settings do before turning them on.

Software & Accessories / Re: CF card health
« on: March 28, 2013, 11:19:55 AM »
I just got back from a trip to the Oregon coast, along with about 450 photos. There were two on my 16G SanDisk (90MB/s) CF card that seemed to be corrupted. They were right next to each other, and they were the only two taken at that particular time. Is this a sign that my CF card is failing, or just a glitch of some kind in that particular session? Is there a way to test these things? I understand these things can fail at any time (this one has had about 11k shots on it). Also, I format my card after every time that I download to the computer, rather than just deleting my files. Any advice you can give me is greatly appreciated.
You can check and fix the card by doing a LOW LEVEL  or full format.  This must be done by a computer, the Camera does a high level format which cannot discover or fix card issues.
It is a fairly long process, allow a hour.  Then format it in camera.  If there are any bad sectors, they should be marked as bad on the card, and the format process will skip them.
It really should not be necessary on a CF card, but run it and see if any errors pop up.  A Fullformat writes to every memory cell, so it finds bad ones.

Lenses / Re: Lens serial codes
« on: March 27, 2013, 09:37:33 PM »
It depends on the inventory that Canon has, and that the dealer has.  If Canon has 5 months Inventory, and the Dealer has 2 months of inventory, the lens might be from last fall.
My 16-35mmL that I bought last July from Newegg had a October 2011 date code, or about 7-8 months old.  I'd suspect that's typical for a high end lens that is not a popular new model.
I have bought new lenses that were only 3 or 4 months old.
It would be possible to find one with a 2013 date code, but unlikely, Canon makes lenses in Batches, so you'd have to hit a new batch where the dealer was out of stock and just received them.
For slow selling lenses, a year or two is not uncommon.

Do you all think the new 7d mark 2 will focus at F8?

There are only rumors.  Crop cameras have never had f/8 AF.  Canon has promised f/8 AF for the 5D MK III.  It would be just sheer uninformed speculation about a 7D MK II.

Lenses / Re: How Much do you use your Canon EF 16-35mm L ??
« on: March 27, 2013, 03:26:38 PM »
ugh...i want one!  i need it to complete my f/2.8 zoom trinity.  I tried out some test shots at a local camera store this week.  quality and sharpness at 2.8 aren't as "bad" as some have exaggerated here on the forums.  I was able to get what I wanted after some minor work in LR4.
I think the quality is excellent, it might fall short of great though.  I am just not using the wide end very much.  I've decided to keep it thru the summer, at least.
Then, I'll analyze my usage again.  If I end up only using my new 24-70mmL, then i'll sell it and use my Tokina 17mm f/3.5 or my Canon 15mm FE when I need ultra wide.

Lenses / Re: Teleconverter
« on: March 26, 2013, 11:44:58 PM »
Any piece of glass, not intergal to the lens, will reduce IQ.  If it improved IQ, then it would be part of the lens

This and the other dogmatic replies and all those who have answered yes that IQ is always lowered by by a TC have answered a very badly phrased question and are only half right and are also half wrong.  If you compare the IQ of the native lens at half the distance from the subject as the lens +2xTC, then the native lens will give better IQ since the image has the same size in both cases.  But, if you compare the IQ when both native lens and the 2xTC combo at the same distance, then a good lens with a good TC will give better IQ than the native lens rezzed up. Look at comparisons on the The-digital-Picture site, for example. Of course, a bad combination could give worse results.

Since he mentioned a specific lens, the 70-200mm f/2.8, which does not take TC's particularly well, our answers seem to be fine.
Many of us have extensively tested TC's with our lenses as well as viewed TDP.
Here is a crop from TDP of the 70-200mm f/2.8L and no TC

Now, with the Canon 2X TC III

Its pretty obvious what the best TC does to the images from the lens indicated by the OP.

Lenses / Re: EF or EF-S for 7D/70D
« on: March 26, 2013, 11:25:24 PM »
The issue with future proofing by getting a lens now to match a FF camera a few years from now is that the lenses are going to be updated or replaced, and you will have compromised now and then want a updated one that matches that 50mp sensor of your 2015 FF body.
Unless you plan to get a FF model this year, get a refurb ef-s lens, or a good used one.  When you go to FF, there will be little if any depreciation.

Lenses / Re: Also chasing Tack Sharp
« on: March 26, 2013, 11:19:01 PM »

Yeah, but that's lateral CA.  Longitudnal CA is a different matter. Lots of magenta and green there.

Here's a test from a while back, focusing successively on each battery in the first composite, crops of the chrome ball in the second composite.  You can see LoCA showing up green in OOF specular highlights behind the focal plane, and magenta in front of the focal plane. Stopping down reduces the LoCA.  Watch out for those chrome bumpers and water reflections, people.  ;)

Oops, You would have to point out my error. :D

Lenses / Re: 50mm: Wich one?
« on: March 26, 2013, 11:16:17 PM »
A lot of replies above highlight the exact reasons I don't currently own a 50mm.
Canon 50mm f/1.8 - poor AF (hunts and inaccurate, I had 2), poor bokeh
Canon 50mm f/1.4 - not sharp enough wide open, micro USM AF not so reliable
Canon 50mm f/1.2L - too expensive / too big and it has that focus shift issue
Sigma 50mm f/1.4 - too many reports of AF issues (also with different camera bodies)
other 50mm's (eg Ziess). I need AF!!

The Sigma 50mm would probably actually be my 'choice' if I was forced to choose. I'd go to a local bricks and mortar shop where I could try before I buy (the actual lens) - and I would use a shop that has a good return policy.

But in reality, I'm waiting for a new Canon 50mm USM, hopefully at f/1.4, but I will consider even if it's a f/2, and even if it has STM focus (rather than true USM).

IS would be an additional bonus (not quite an essential for me, but definitely a plus if IQ is still great wide open).

The new Canon 35mm f/2 IS USM is 'promising' - in that, I hope Canon keep the same format / standard in developing / producing a similar 50mm!

Cheers   8)

I'm pretty much in the same boat, I've had numerous 50mm lenses, three 50mm f/1.4's and at least 6 f/1.8's.  I had one older 50mm f/1.8 MK I that was really good, the rest of them were fine, but not outstanding.
Last week, I sold all three of my remaining ones, two 1.4's and a 1.8 MK I.  I decided to order a 24-70MK II after holding out for quite a while.
50mm just does not seem to be a focal length that works for me.

Lenses / Re: How Much do you use your Canon EF 16-35mm L ??
« on: March 26, 2013, 10:51:20 PM »
I was right on the verge of buying one from B&H yesterday, but I forced myself to hold off for a couple of weeks.

Rebate may have ended by then (although it might not make a big difference in the street price). Just sayin'  ;) .
I put one on order yesterday.  I try to give business to our small local dealer Camera Corral in Couer d Alene, ID. 
Not too many towns with a population in the 45,000 range are lucky enough to have a pro camera store, I hope to do my part at keeping them here.  They do have to custom order big ticket items, Canon is usually pretty good about helping them out.  He was going to call the Canon Rep today and see if she could give him some priority, they can take a long time to arrive if they are out of stock.

Lenses / Re: 50mm: Wich one?
« on: March 26, 2013, 08:09:36 PM »
The Sigma 50mm f/1.4 is optimized for APS-C , while the Canon 50mm f/1.4 performs better on FF. 
Reasons to upgrade are
Better build and reliability.
Downside to Sigma - commonly have AF issues (for those that check) and need to go to Sigma for adjustment.  None of them have AF that is outstanding.

Lenses / Re: Also chasing Tack Sharp
« on: March 26, 2013, 08:04:30 PM »
I used the 85/1.2 for a couple days once and was underwhelmed by both the focus speed and ca when wide open.

CA's with the 85mm L are extremely low, focus is slower though.  It will be hard to beat the 85L for CA's.  0.14 pixel at f/1.2!  If that's too much for you, you are going to look far and long.

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