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Messages - Mt Spokane Photography

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4381
Software & Accessories / Re: Film and polaroid scanner
« on: March 25, 2013, 01:10:12 PM »
I've been happy with Epson scanners, and have used a couple of the photo scanners.  Most of them can do 120 film, but for larger, you do need a higher end model.
 
 
The first was a Epson 1650, 64 bit drivers do exist from third parties for windows.  Its a reasonable scanner, and they are found for little or nothing.  It will also do up to 4 X 5 film.
 
I now use a 3170, which works with windows 7 64 bit.  I scanned a number of old 120 film images using it. It will not do 4X5's as I recall.
 
You can set exposure parameters before scanning, so you can play with the brightness, darks, mids, contrast, dust removal, etc.  The auto exposure usually works well, but for pulling a image out of a over or under exposed negative, the manual settings work best.

4382
Software & Accessories / Re: DxO Optics Pro
« on: March 25, 2013, 11:22:26 AM »
I'm with Paul on this.  DxO's lens corrections and RAW conversion are excellent, IMO better than LR (slightly) and DPP in terms of output.  I use Aperture for library management.  DxO v8 is substantially faster than previous verisons.  If you're looking for an all-in-one solution, LR seems like a good choice.  I also use CS6 for creative image processing.
I'll try V8.  I also upgraded my computer, but its only a little faster.
 

4383
EOS Bodies / Re: Are 5d3 owners happy with the video, ALL i?
« on: March 25, 2013, 11:12:06 AM »
When you look at a 2mp frame grab, its going to look bad.  That's true for all digital video cameras operating at 2K.
 
4K is much better, and with 8K, single frames are very nice.
 
Show a frame grab from video of your iphone. 
 
 

4384
Lenses / Re: Canon 24-70 f/2.8L mkii Focus Shift
« on: March 25, 2013, 11:08:37 AM »
HI All,

I have just received my (2nd copy) Canon 24-70 f/2.8 mk II. Being a faithful CR follower and reading http://www.canonrumors.com/tech-articles/how-to-test-a-lens/ I begain from the top and followed ever step I could as best as I could. I also have Reikan Focal and ran through every testing option there was available. What I have found suprised me to the point I originally thought I had received the dreaded bad copy.

There is a definite focus shift on the 24-70 mk II. I have found that from f4 to f5.6 it starts to back focus severely  -5 afma vs +3 afma for f2.8 to f4 and +3 afma f5.8 on.

I am surprised there is not more information already out there on this.
I Found this on a competing forum  http://www.fredmiranda.com/forum/topic/1177402 very similar findings

I understand through research you can hold the DOF button down to get around this issue? But would that reduce effectiveness of the f2.8 cross focus points?

After a quick search it appears the Tamron 24-70 has a very similar focus shift issue. 
http://www.lenstip.com/340.5-Lens_review-Tamron_SP_24-70_mm_f_2.8_Di_VC_USD_Chromatic_and_spherical_aberration.html

Does anyone have any advice? At this point I don't know what to do?

Thank you for your time.

Either exchange it again, or send the lens to Canon for adjustment.  I'd say exchange it if you can.  It might have a issue at 70mm.
 
Due to residual spherical aberration,  a lens focus will appear to shift towards the rear, but the 24-70 should do it only very slightly.  For the most part, its just the depth of field that increases more towards the rear as you stop down.
You can decrease the aperture on this photozone chart and see it.
http://www.photozone.de/canon_eos_ff/773-canon2470f28mk2ff?start=1
 
http://toothwalker.org/optics/spherical.html

4385
Technical Support / Re: Lightroom crashes when I try to import...
« on: March 24, 2013, 10:56:13 PM »
It was almost certainly a corrupted disk sector.  Backup your hard drive and then do a scan for bad sectors.  If it crashes, you might lose everything.
 
It nicely gave you a heads up warning.
 
Of course, it might go forever.

4386
EOS Bodies - For Stills / Re: Overly Hot Hotspots On 5Dmk3
« on: March 24, 2013, 09:44:31 PM »
Sorry, I would love to post examples but it'll be a day or two till I can get to my computer that has the files on it.

And I'm shooting in RAW. Also, Mt. Spokane, hot spots are areas that are overexposed in the shot. It may just be a video saying which I'm accustomed to, so I apologies for the confusion.

In short, it just doesn't handle highlights well at all, and the shadows are so harsh it just makes them looks worse. I have some examples I'll try and put up from a concert the other week. The singer was not lit very well and the back was pretty bright so I expected there to be a bit of a difference, but the lights in the back were so blown out that they were just smudges when I opened the files.

I know it's not very helpful unless I post pictures so I'll do that asap. Thanks for the replies thus far.

Thanks for the explanation, the only thing I could find was referring to infra red, so I was trying to imagine infra red somehow heating the sensor and creating overexposures.  I had not heard the term before.
 
 
It is always a issue for me when a bright light is in a darkish scene at high ISO.  It doesn't work well (Understatement).  I did not notice either the 5D MK II or the 4D MK III, or my D800 doing well at high ISO with a light in the scene.
 
I thought that cinema folks had total control over their lighting so they could minimize DR issues.

4387
Thanks Mt. Spokane.

I usually keep my 100-400 set to 6.8 - infinity. Rarely do I get close enough to change it to 1.8
 
With the 1d mark 2 or 3 I'll be at 728 versues 560 if I get the extender and 1ds 2.

Might just skip the extender and get a 17-40 F4L since I already have an 85 1.8 to use with the 1ds 2.

Without pixel peeping how big of a difference is it between the 1d mark 3 at 10.1 MP vs. 1ds mark 2 at 16.7MP.

The FF makes a impressive difference even at the same MP level compared with a crop.  Better everything except for frames per second.
 
That said, I do like the 1D MK III, you won't go wrong with either.

4388
I read this rumour and i take from it...

The 7D2, 1DX, 1DC, 1DLMP(Large Mega Pixel?) will all be in the same body/shell.

So that would mean 4 Pro bodies

Then the 5D3 is semi pro, with the 70D and 6D being an adv amateur line?(don't really know that the difference between the 2 classifications are)

After that it all gets a LOT confusing.

Those who are shelling out hard earned money for these will know what they are.  You don't just drop into best buy and see them all.
 
Those who have a ton of money and want the best will buy the most expensive Leica and use it as a point and shoot.  Its all about status symbol at that level.

4389
Software & Accessories / Re: DxO Optics Pro
« on: March 24, 2013, 08:07:36 PM »
I've tried it multiple times.
 
The good - It produces a very nice looking image without tinkering around.
 
The bad -
Its very s-l-o-w
You still need image management software
I do not like having all those xmp sidecar files that must be kept with the image file.
Lightroom 4 also corrects for distortion, and DPP has by far the best lens correction package, but you pay for it with a monster sized file.
 

4390
You will definitely get better AF performance and equal IQ with a 1Ds MK II and cropping.  However, f/8 performance with a extender wasn't bad, just not lightning fast.
You really do not need to ratchet focus from close up to 300 ft., use the AF limiter or pre focus.  Then with a slightly different distance, focus is almost instant.  I found the same thing happened when autofocusing at f/11 with a non reporting setup.  Manually focus to be close, and a tap of the shutter snapped the lens into sharp focus where it would not focus at all if the focus was off by 100 ft.
Recently I tried a Kenko 1.4X TC on my 5D MK III with my 100-400mmL, AF surprised me with its speed, particularly if the change in distance was not great. I returned the Kenko due to issues with my 100L, and am waiting for the promised f/8 firmware update.

4391
Canon will have to update their 16-35II and perhaps even the earlier version-one L primes...

It is clear they are having difficulty delivering on the UWA front... it is certainly not for the lack of trying. They have tried with version II which is, as I said elsewhere, "meh".

The 16-35 was (I read a canon comment a few years back) introduced for PJ's using the APS-H cameras.  The MK II was a  attempt to upgrade it for FF.
 
 
Canon knows how to produce a top quality wide lens, but they have not figured out how to make one that ordinary millionaires can afford.
 

You see that with other products as well, some car companies are good at making large cars, but are utter flops at making small cars.  Some small truck makers have flopped in the full sized truck area.
 
 
Its not easy to overcome that type of thing, some highly experienced employees  don't always want to change their rules of thumb for design, and they pass down those rules and keep new employees under their thumb.
 
 
Nikon suffered from that until some younger blood finally got to the top.  The trouble is, they also need to make a profit.  Innovative ideas do not keep a company in business if they don't turn a profit.
 
 
Nikon is building a giant plant in Laos to open this fall, apparently hoping to ultimately get their costs down.  They also (I think) understand that the warmer weather means more floods and they need to have plan(t) B.  I hope it works out for them, lower prices are certainly welcome, and Canon is in the drivers seat right now as far as cost of production is concerned.  They drop prices and still make a nice profit.

4392
If this is true, then Canon almost certainly will have to update a number of L lenses if this body is in the horizon...I won't name names...but a number of names come to mind.

There is little doubt that the high MP is very exacting of glass, but it depends even more on very careful setup  by the photographer.
 
 
I suspect that the need for lens upgrades is part of any 2014 plan.  Certainly, a wide zoom is a candidate for upgrade.
 
 
I recall when the 1Ds Mark III came out with 21 mp, there were complainers everywhere saying that their was no glass to match the sensor, and that their images were blurry.
 
 
The same happened with the 7D.  Photographers can learn to maximize the use of what they have.  Usually, it means faster shutter speeds, or more stable tripods.  Even slight subject motion will cause a blur with slow shutter speeds. 
 
 
This means that the high ISO that you thought you had can be reduced effectively a stop because of the need for doubling shutter speed.

4393
EOS Bodies - For Stills / Re: Upgrading from Rebel XT
« on: March 24, 2013, 06:52:01 PM »
8) I'm done waiting... I held out for a possible 70D announcement this past week, but when that came and went with no sign of such a camera I pulled the trigger on an used 7D today got it for $850 +$40 shipping. Just under 8K on the shutter.

Now to start saving for a good EF-S lens to match.

Thanks for everyones input.

Be sure to check the shutter actuations,  unfortunately some sellers just throw out a guess.  Where are you getting it from that cost $40 to ship?  Or is it being overnighted.
 
 
It should be a good camera for a long time to come.
 
The 15-85mm EF-s is about $500 right now at canon direct (refurb).  Its a nice lens.  I sold my 7D but kept my lens for now, I may decide to get another crop camera for a 2nd body depending on what appears.

4394
1 stop ISO improvement is hardly possible. Maybe 1/2 or 1/3 stop. What would, however, be possible are 3 stops in dynamic range at ISO 100. What would also be possible is to significantly increase the number of pixels without losing sensitivity after downscaling.

Therefore the safest bet is a higher megapixel sensor with slightly more noise and the same dynamic range after downscaling. Sad but true.
+1
one stop is wishful thinking.

4395
EOS Bodies - For Stills / Re: 5Dc a good option?
« on: March 24, 2013, 05:58:33 PM »
The 5Dc is excellent, but has no liveview or AFMA, to big features that might matter to you.
It is excellent at high ISO's.
FF does not demand a better lens, its the opposite, just check the lens review sites.  The MTF is always higher for the same lens on a FF body.
 
You can also use the DXO tool to compare sharpness of a given lens on different bodies.  The 40mm has a 12mpix resolution on a 5Dc, but only 9mpix on a 7D
 
Play with it, a lens will have more resolution and rate higher on a 5D classic than on any crop body.  It gets even better on a 5D MK II or MK III.
 
http://www.dxomark.com/index.php/Lenses/Camera-Lens-Database/Canon/Canon-EF-40mm-F28-STM/(camera)/176/(cameraname)/Canon-EOS-5D

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