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Messages - Mt Spokane Photography

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4786
Software & Accessories / Re: HorusBennu carbon fiber tripods
« on: October 15, 2012, 08:35:36 PM »

I've noticed nobody here discussed this brand. There's a topic on other forum http://photography-on-the.net/forum/showthread.php?t=1017625

It might be interesting for someone, someone like me as well.
I considerd on buying FX 8442TT and FX 34QL. I'm 6.3. Do you thing this will be too short for me?
C-3540V is sizewise better, but it might be overkill and I guess I'll be needing a bigger ball head for it.

They seam quite affordable, esspecially after I saw RRS prices.
I found there was only one remark on LX-3 ballhead's clamp up to now everybody else seems to love it.
You should be able to mount your camera on a tripod and look thru the viewfinder.  Thats without any elevated center column.  Never raise the center column, you might as well hand hold the camera, the shaking will be similar.

4787
Speedlites, Printers, Accessories / Re: Where is this new flash?
« on: October 15, 2012, 08:21:42 PM »
Don't ever make a buying decision based on a rumor.  90+ percent do not happen.

4788
Lenses / Re: "Zoom Creep" on the 24-105L : My Solution
« on: October 14, 2012, 08:48:03 PM »
Four words:

Black
Electrical
Insulation
Tape


That black tape is vinyl.   

The common hardware stuff is vinyl, but you can get other materials that don't deteriorate as well as premium grade vinyl. Not all vinyl is equal, there are tons of different additives and stabilizers that can be added.
Acrylic adhesives tend to get hard and dry (lots of additives to prolong life), while silicon adhesives can liquify under temperature and humidity. (lots of trade secrets to prevent this as well).
Generally, a good grade of 3m tape will last for years.

4789
Lenses / Re: B&H Issues!!!
« on: October 14, 2012, 06:21:21 PM »
There were no people in the picture.  But, I know what a picture of green brick walls, USPS stickers on shelves and carts, and overhead catwalks with peep-slits and visors look like, and I know where they're found.

My guess, someone was going to make themselves a present.  I was on it, and insistent, and somebody got looked at closely, so the package got "unlost" rapidly.   For all I know, "someone" may have "delivered" the package in non-USPO uniform, and non-USPO vehicle, on non-USPO time, just to avoid any problem.  They did not know enough to reformat the card.

I'll confess... hehehe... when I saw the card in the camera, I thought there was a possibility of something "juicy"... or really just curious as to why things were, as they were.  Thats what got me to peep the card and unerase the file.   

I got two cameras, one silver for the GF, and one black for moi.  Use - on motorcycle.  Don't care if they get wet, get knocked about, get abused.  Really don't care for the best image quality.  The cameras primary purpose - survive and make reasonably ok snapshots.  The Fuji's have lousy detail resolution due to anti-noise softening, but have above average color and contrast, will shoot in B&W mode without fiddling, and... important... have LCD's you can actually see in daylight, with a "boost" LCD button for momentary full brightness mode if needed.

That chapter is over... move on.  Sorry to drift the OP's thread a bit.   Just... he's not alone.  Shipping mysteries... remain such for the most part, in my experience.
File a complaint with the postal inspector, they are very keen to catch whoever is doing it.  They have a lot of resources, including surveillance photos, but they can't look at every one.  Your info will tip them off to time and place.  If you do not report it, then the perp will keep right on doing it.

4790
Lenses / Re: Kenko TC and AF at F8
« on: October 14, 2012, 06:15:29 PM »
Loren
I do bird photography and use spot autofocus with the centre spot.  I have read that the outer zones are more sensitive but the centre focused well. 
Alan

I'll try spot; the regular center point just hunts with the 100-400+1.4.

Thanks.

Loren
Be sure its the Pro 300 DGX version.  There are some who say that only recent production of these will AF at f/8.
I did use the center poing, but not spot.  My Canon 10D doesn't even have spot, but it worked very well as did my 5D MK III.

4791
Third Party Manufacturers / Re: Recommend me a m42->EF adapter
« on: October 14, 2012, 06:11:36 PM »
I'd get the adapter without focus confirm chip.  A good chip costs $25.00, so what you get may not be very good. (understatement)
There was a post recently where someone had a AF chip hose his camera, it would not AF after using the adapter and chip.  Thats probably not common, but at least get a good ship, not a Chinese one.  Companies that make the better adapters long ago gave up on the Chinese chips due to failures.

4792
Software & Accessories / Re: AFMA Software and Suggestions
« on: October 14, 2012, 06:07:18 PM »


I understand the software can do many other tests, but for the main purpose for AF calibration is FoCal worth it?

Thats a value judgement that only you can make.  For me, it was worth it.
 
Here, for example is the sharpness versus AFMA curve for my 50mm f/1.8 MK I lens.  The correct AFMA is -10, but truthfully, it looks pretty darn good at zero.  You do not notice the difference except at 1:1. Its the difference between about 600 and 750 on this scale.

4793
Software & Accessories / Re: AFMA Software and Suggestions
« on: October 14, 2012, 05:48:20 PM »
I have heard a lot about this FoCal software for AFMA.

My question is it really worth it?

Doesn't AF vary by distance to the subject too? From minimum focus of a focal length to a more distant shot at the same focal length?

So this software just adjusts the AF for a specific distance of a focal length (assuming you use that same distance quite a bit), if you change that distance from the subject...you aren't going to get that same perfect focus at the same focal length? Am I missing something?

I understand the software can do many other tests, but for the main purpose for AF calibration is FoCal worth it?
It only measures one focal length at whatever distance you set the camera back from the target.  How could it do anything different?
 
However, you can vary the focal length and distance to the target and compare the best settings, picking the one that makes sense to you.
Knowledge is power, and by taking AFMA measurements at different focal lengths and distances, you can be the one who determines the setting. 
Of course, if You have a 5D MK III, or a 1D X, there are two settings for zooms - Wide and Tele, and the camera interpolates the AFMA for focal lengths inbetween.
As to distance, most bodies do tend to front focus at minimum autofocus distances, so you do need to test and see if its a real issue.

4794
Lenses / Re: "Zoom Creep" on the 24-105L : My Solution
« on: October 14, 2012, 05:39:24 PM »
Your 24-105mm has zoom creep?!?   :o

Guess I'm lucky, mine stays put.
Yes, mine is not even near zoom creeping, I can hold it vertically and have to push firmly or pull  relatively hard to get it to retract or expand.  Mine is about 4 years old, and heavily used, but I suppose that there are bad samples.  I'd recommend that anyone getting one that creeps send it back for exchange.

4795
Lenses / Re: AFMA'ed the 24-70 mk.ii ... not sure I am loving it.
« on: October 14, 2012, 05:34:26 PM »
You can just take one or two shots of a test chart and expect to see the perfect sharpness. I always do at least six 10x liveview manual trials and often try for ten. Just the tiniest, tiniest hair of focusing difference can make test results go all over the place. It's tricky.
Thats whats nice about foCal, you do not get all those variations that happen due to many uncontrolled factors.
Here is a 24-105mmL with at least two shots taken at each AFMA setting.  Notice that they usually are close or on top of each other.  It would be virtually impossible to see the differences in the shots taken at the same AFMA, and being off by + / -  3 points is insignigicant.  You need to be off by 5 points with this lens at 105mm to see the difference in sharpness.   Obviously, some lenses are less forgiving, a 85mm f/1.2 might have a sharper peak.


I have to disagree, even the TINIEST hair difference and the crispness of a test chart WILL differ and you can easily flip flop around comparative performance between two lenses. Even doing 10x LV MF with a magnifier on top you absolutely will see differences test shot to shot and need to pick the best out of a bunch when you are doing fine comparisons.

Even on your chart maybe the first try is the 930 and the next try is the 815, if you didn't know they were both the same copy tested you could mistakenly think one copy is way better than the 'other'. YOu need a bunch of trials to hit the 930 score with reasonable chance.

And say a 300 2.8 IS + 1.4x TC on a 7D, even a difference of 1 on MFA can make a noticeable difference in hit rate, DOF at that high MP count and such a long lens is small.
While it true that someone can see a tiny difference at the AFMA settings, FoCal saves the1:1  images used for the evaluation at the different points, and the difference in sharpness isn't significant to me.
In fact, just using the images, its entirely possible to select the wrong one as being the sharpest.  Some people can, but the differences are very subtle.
 

 

 

4796
EOS Bodies - For Stills / Re: Camera Modes
« on: October 14, 2012, 04:09:32 PM »
I don't use the dials much, either Av or Tv pretty well take care of everything.  If there is a setup I like and use a lot, I can assign it to a custom mode.
If you are comparing with a Digital Rebel and all the many modes they have, I can't help you there, I'd still use Av and TV with M in a very few cases.
If the Pentax UI is what you like, thats fine, buy one and you will be happy.  Personally, the mode dial is the oast thing I'd consider when selecting a camera, there are many much more important things than the number of modes.

4797
Lenses / Re: need help
« on: October 14, 2012, 04:02:59 PM »
I bought a 5D MK III to replace my 5D MK II and thought $3500 was too much for the differenc3, considering the features I use, so I returned it and bought another 5D MK II from the Canon refurb store for $1400.
Then, Adorama popped up with a 5D MK III for $2750 and that was the right price so I bought a second one.  I also sold the 5D MK II for a $300 profit, and got a $56 ebay bucks credit.
I gather you are in the UK and can't easily buy from the USA, but I'd look for a deal on the 5D MK III.
You might also consider a 100mm L, mine really loves my 7D.
(I also tried a D800.  Nice camera, but I found it impossible to buy equivalents to some of my favorite Canon lenses and resold it).

4798
Lenses / Re: AFMA'ed the 24-70 mk.ii ... not sure I am loving it.
« on: October 14, 2012, 03:28:38 PM »
You can just take one or two shots of a test chart and expect to see the perfect sharpness. I always do at least six 10x liveview manual trials and often try for ten. Just the tiniest, tiniest hair of focusing difference can make test results go all over the place. It's tricky.
Thats whats nice about foCal, you do not get all those variations that happen due to many uncontrolled factors.
Here is a 24-105mmL with at least two shots taken at each AFMA setting.  Notice that they usually are close or on top of each other.  It would be virtually impossible to see the differences in the shots taken at the same AFMA, and being off by + / -  3 points is insignigicant.  You need to be off by 5 points with this lens at 105mm to see the difference in sharpness.   Obviously, some lenses are less forgiving, a 85mm f/1.2 might have a sharper peak.

4799
EOS Bodies - For Stills / Re: 5D Mark III HDR Mode "issue"
« on: October 14, 2012, 03:20:52 PM »
I'd expect less cropping if the camera is mounted to a tripod, was it on a tripod/

4800
I doubt if its marketing strategy.  Computers sort thru billions of optical formulas running around the clock finding those that are candidates for products.  Those are then checked by a person, and mostly found impractical or lacking in some way.  There are, of course lots of formulas dor a $50,000 lens, but finding one to produce for under $3,000 is difficult. 
The marketing part comes in setting priorities.  There are five or less lens development teams, producing a new product about every other year.  We don't know what priority they might assign to a new wide lens as opposed to say a new 100-400mmL.  Then, there are the video lenses and the EF-s lenses that all use the slim resources.
I'd like to see both.

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