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Messages - Mt Spokane Photography

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5071
Lenses / Re: lenses for my 7D - please help!
« on: July 13, 2012, 10:44:56 AM »
I've just taken delivery of a new Canon 7D (body only) for work. I've been recommended three lenses by the supplier who know what I'm going to be using the camera for:

70-200mm F/2.8L
50mm F/1.2L prime lens
15-85mm F/3.5-5.56

I'm going to be using it mostly for shooting videos in the mountains (in all weather types) in the UK, indoor/outdoor and under studio lights.  I know that the lenses are just as important as the camera (or more important depending on what you have) but there seems to be a huge range in pricing for the range I've been recommended. 

Unfortunately, the company I work for has a tight budget, but I don't want to get something cheaper and then find it's not going to get the best results.

I shoot a wide range of stuff, from a static shot of presenters in a podcast, to tracking someone skiing past me or with me skiing with them.

Could I ditch the prime lens and make do with the 70-200 and the 15-85?

Someone else recommended the Canon 50mm f1.8 which they said although a bit plasticy produced great results.  Plus the Sigma 10-20mm F3.5 EX DC HSM as another option.

I haven't shot video with a DSLR before so please excuse my ignorance!

My budget is around £1500 (US$2300)

Thanks!
Of the Canon Cameras, only the T4i (so far) will autofocus for video and track motion.  Its probably not going to work well for fast moving subjects, but far better than the 7D, which does not autofocus doing video ar all.
The T4 i also works with two lenses optimized for video.  There are a few other f/2.8 lenses optimized for video as well.
I'd take the camera back and do some research before buying.

5072
Software & Accessories / Re: Canon Direct Instock Alert Tool
« on: July 12, 2012, 11:40:12 PM »
I use one to monitor the Canon Refurb store for 1D Mark IV availability.  It e-mails a notice when the product availability changes.
There are lots of web page trackers that can be customized.
http://www.bing.com/search?q=track+web+page+changes&qs=n&form=QBRE&pq=track+web+page+changes&sc=2-22&sp=-1&sk=

5073
Third Party Manufacturers / Re: Is the future of DSLRs FF only?
« on: July 12, 2012, 11:05:22 PM »

His analysis seems to be ignoring the facts.  The cost of the sensor.  Wafers used to make camera sensors are not cheap run of the mill wafers, and the yield from a given wafer generated 10-20 times the number of APS-C chips.  This means the cost of a FF sensor is at least 10X the cost of a APS -C sensor.  And, since the cost of parts used is subject to a percentage markup, that further increases the price of a FF sensor.
Just how much the cost to manufacture a FF sensor has dropped over the last few years is unknown, but they are not cheap.  Switching from 8 in to 12 in wafers certainly helped along with single pass capable lithography equipment.  But, you can always get 10-20  APS-C sensors for the cost of one FF sensor.
When 18 inch wafers hit the market in about 2018, that will further lower the price, but the ratio of APS-C to FF from a wafer will likely still be over 10:1


Let us look at some numbers:
For 8 in wafer, the cost of a processed wafer is about $1000, throw in the micro lenses and AA fiter for extra $300 (my guestimate) So each wafer is $1300. My estimate is that there may be only 75 sites for the 8 inch wafer for APS-C sensor. Let us assume the yield for APS-C is 75 %, then we will have 56 sensor per wafer, $1300 per wafer, that will be $23 per sensor. There are 24 FF sensor site  for 8 in wafer. Assuming the yield for FF is 25% (1/3 of the yield  of APS-C, being pressimistic ). then each wafer will yield 6 FF sensor. that will be $210 per sensor.
So the difference between FF and APS-C is $193. I would call it about $200 is just a rough number in case my guestimate on the micro lens and AA filter is wrong.  IF Canon have moved the sensor production to 12 in (300mm) wafer, the difference is even smaller. However, Canon white paper mention that there are 200 site of APS-C sensor in a 8 in wafer. That is totally wrong. Anybody can prove it by drawing it out on a peice of paper.

The FF is a lot more expensive the the APS-C body is due to the sales volume of FF is a lot lower than APS-C and the manufacturer try (and succeeded) to put FF on a pedestal and command a higher profit. 5DII was about $500 higher than 7D. That sounds about right.

I do not know what the current cost is, since Canon has gone to 12 in wafers, but in their white paper http://www.docstoc.com/docs/3725428/Canon-CMOS-White-Paper   of a few years ago, they state cost of  up to $5,000 for a high resistivity 8 in wafer.  It will make 200 APS-C, or 46 APS-H, or 20 FF.  Each wafer typically has about 20 defects, so you could get 180 APS-C or 26 APS-H, or 0 FF in the worst case.
Thats why the switch to 12 in wafers dropped the cost of making a FF camera, but, the numbers are heavily in favor of APS-C as far as yields go. 

5074
Even my 15mm FE on FF distorts the image a lot.  Is this what you want?  Defishing the image is not really a good way to go.  The wall is flat and the RR tie is straight BTW.
 

5075
Pricewatch Deals / Re: Overstockdigital
« on: July 12, 2012, 04:02:12 PM »
I've tried searching the forum and didn't find anything about this, but I was wondering if Overstockdigital.com was a legit site.

They have the 24-105mm lens for $809 brand new..seems too good to be true.

Any buyers from this website? :o
When you purchase a camera or lens made by Canon, your sales receipt from a Authorized Dealer will be required for a warranty.  Otherwise, you may be totally out of luck.  Warranties are void when bought from auction sites, liquidators, or other non authorized sellers.
www.usa.canon.com/app/pdf/dealer/CanonAuthorizedDealers.pdf

5076
Site Information / Re: Are you guys crazy?
« on: July 12, 2012, 03:25:52 PM »
First off, I am not trolling, I am not a professional ,
Maybe its due to first time trolling posts insulting everyone on the forum with their professional opinion.  The way to help the forum is to participate in the discussions, help new photographers, and avoid insulting users.

5077
Third Party Manufacturers / Re: Is the future of DSLRs FF only?
« on: July 12, 2012, 03:20:50 PM »
On another rumor site was a link to a blog that talked about the future of DSLRs being FF only:

http://falklumo.blogspot.it/2012/06/true-reasons-full-frame.html

His analysis seems to be ignoring the facts.  The cost of the sensor.  Wafers used to make camera sensors are not cheap run of the mill wafers, and the yield from a given wafer generated 10-20 times the number of APS-C chips.  This means the cost of a FF sensor is at least 10X the cost of a APS -C sensor.  And, since the cost of parts used is subject to a percentage markup, that further increases the price of a FF sensor.
Just how much the cost to manufacture a FF sensor has dropped over the last few years is unknown, but they are not cheap.  Switching from 8 in to 12 in wafers certainly helped along with single pass capable lithography equipment.  But, you can always get 10-20  APS-C sensors for the cost of one FF sensor.
When 18 inch wafers hit the market in about 2018, that will further lower the price, but the ratio of APS-C to FF from a wafer will likely still be over 10:1
 http://www.reuters.com/article/2012/06/12/us-tsmc-renesas-idUSBRE85B06J20120612

5078
EOS Bodies - For Stills / Re: 1Dx and f/8 AF
« on: July 12, 2012, 11:35:30 AM »
Without taping the pins??

5079
EOS Bodies - For Stills / Re: Discounts for the 1DX for Christmas?
« on: July 12, 2012, 11:28:29 AM »
If the economy goes sour, then all bets are off.  Sales will be the determination.
 If their is a big inventory left at the end of the fiscal year for Canon's bookkeeping, things will go on sale.  They will be careful about production to keep it from happening, but sometimes it costs less to go ahead with high production rates to use up the components that are in the pipeline. 
The type of sale most likely will be a discount on a camera with lens purchase.  Thats how you reduce overstock.

5080
Third Party Manufacturers / Re: Making of a Leica M9-P
« on: July 11, 2012, 11:25:47 PM »
I'm not an aesthete, apart from having the view that form should follow function.  From a purist technical point of view, the Hermes bag adds little value, and most probably LowePro would be able to provide something more functional.  I have to admit, I see this as purely cashing in on the luxury goods market, in the same way that Mont Blanc has, rather than in providing a technically superior product which meets a specific functional requirement.

(Not that there is anything ethically wrong with tapping into the luxury goods/services market ... isn't that what many portrait photographers do?)

Being a technical person, I don't purchase gear just for the big name or for status, but for function and value or suitability for the job, but some see it as a ultimate status symbol to show off that they can afford one, I guess. 

5081
EOS Bodies - For Stills / Fun Review of the 1D X
« on: July 11, 2012, 11:19:57 PM »
This review is fun to read, and well written.  I enjoyed reading it for what it is.  not a technical review, but some very good sample images.
 
http://www.stevenleong.com/blog/?p=1629

5082
Third Party Manufacturers / Re: Making of a Leica M9-P
« on: July 11, 2012, 09:03:38 PM »
Nah, sorry. That doesn't impress me. I expected the making of the Leica, not some exterior leather work. I would take an M9-P even it was wrapped in newspaper because it is a great camera but certainly not because of the bag it is in.
The type of people that drop $25K or 50K on one want a status symbol, and that bag is part of it.
I sold my Hasselblad last year on ebay, and the original leather Hasselblad case went for as much as the camera body.

5083
Third Party Lenses (Sigma, Tamron, etc.) / Re: Nikon 500mm f/8 Reflex
« on: July 11, 2012, 09:00:09 PM »
My Ec-S focus screen came today for my 1D MK IV.  I popped it in, and my manual focusing did improve, but still not equal to AF or live view. 
I played some more with hand held images from the 500mm mirror lens, but, for me, it was a exercise in frustration trying to setup a good exposure and then getting a sharp image.  I ended up with only two of 20 or more that were presentable, and these were not all that sharp.  I was using shutter speeds of 1/1500sec or more, so I had the ISO cranked up, even in very bright sunlight.
I gusee I'll list it on Craigslist or ebay, my vision is not up to it, and, my 100-400mmL blows it away.  I can even crop my 100mm macro images and get better.
 

5084
EOS Bodies / Re: How does Canon get input from photographers?
« on: July 11, 2012, 07:05:31 PM »
I assume the Canon photography division, like any big consumer oriented corporation, has some sort of market research department.  Does anyone know how Canon figures out what their potential customers want?  Do they use surveys, focus groups, round table discussions, lurk on photography forums like this one?  It's a complete mystery to me.

Rather than speculate, perhaps someone here has had enough contact with the Canon marketing people to offer some insight?  If you know the answer, please state how you know.
All of the above, but a big input comes from some of the top professional photographers in the world who are given the Designation "Maker of Light"  Nikon has a similar class of top photographers.
These are the photographers and video makera who have won National and International awards for their photography, its not something you can apply for. you will be asked or nominated by another member.  Canon and Nikon provide lots of perks to them, first looks at new products, round table discussions with technical people and marketing people.
Forums like this really don't have much impact.

5085
EOS Bodies / Re: 5dmkIII and warranty
« on: July 11, 2012, 06:58:18 PM »
Generally, you actually extend it by 1 year.  You get a 3 year total warranty for $109, but the first year is the Canon Warranty, if you used a American Express card, they give you the 2nd year warranty at no charge, so you are really paying for that 3rd year.
Most issues will happen in the first 3 months, by the time the camera is 2 years old, there will be very few units failing. 

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