October 21, 2014, 10:22:27 AM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - K-amps

Pages: 1 2 [3] 4 5 ... 102
31
Canon General / Re: Buying refurbished from Canon
« on: June 02, 2014, 08:11:16 AM »
Good service and good price.

However.

You pay sales tax whereas with BH you don't. (whether you do later on when filing taxes is a separate issue).

I got 2 lenses from them. One was steller (70-200 f.28mII) in sharpness. The other (24-70 F2.8mII) was ok, but not steller.....

eventually I sold both and got new ones.

For whatever it is worth.

32
Canon General / Re: 9 Sins of a Newbie Photographer
« on: June 02, 2014, 08:08:50 AM »
Looks like  someone describing themselves...

33

Has any manufacturer implemented a dual scan or dual pixel single scan of a read whereby one scan reads the scene (as an example) +6 stops over and the second scan reads 6 stops under, then these scans are merged to output a file that is +12 stops more in DR than the one file.

If the dual scan will cause a blur for fast objects... perhaps have a dual pixel read out where each partner pixel offsets the recording of the image by +/- 6 stops, and either yield 2 raw files for manual processing, or do an in camera processing to compress the file into visible DR for output purposes...


34
Being in my late teens in the 80's and witnessing how the DAC's in the CD players would go from  16 to 18 to 20 to 24 etc. every 2-3 years, then the sampling frequency even faster than that....

Apologies for the stupid question in advance:

What's the huge deal with this 14bit wall in Digital Photography? Why can't they make an 16 bit processor and give us 16 stops of DR.... ?



Beyond a certain point, it makes no sense - for example, measurements and analysis by various folks on the web put the capacity of the 5D Mark II's sensor at about 59,000 electrons (ISO 100). That's fewer than the maximum number of different positions achievable with 16 bits. If you can't record 16 bits worth of different electron values, why would you use 20?

Thanks. Again I am no expert, but perhaps they would use 16 or 20 bits for similar logic that the CD player manufacturers used, i.e. larger bit depth converters are more linear in certain bit depths... i.e. offset the data stream from the sensor by 2 bits and then encode/decode. If for nothing else, it might be less noisy maybe. I don't know... just thinking out aloud. I would feel visual acuity is more sensitive than auditory... so why doesn't this have the (marketing) traction that audio component manufacturers had. In the end it was a Sony idea of using direct stream as opposed to a ladder process that satisfied the most die hard audiophiles...

How does 59k electrons convert to 14 bit and what influences the # of electrons. Do EXMOR's do more than 59k electrons?


35
Since the Solution is pseudo crowd sourced, so should be the training manuals or reviews etc. Once I have the basics, I'd be happy to write instructions on the 2 things I would like to use it for, focus and exposure bracketing. EWP, thank in advance for your volunteering for this.

best regards,

36
Do you guys know if ML does Focus bracketing (very helpful for Macro for example).

Yes, I know. Yes, ML does it.

Btw concerning easy installation: There is an implicit reason for this not being 110% advertised, next to the devs hating to write docs: If you cannot install ML with the current procedure you most likely won't be happy with it, it's not completely "works out of the box" and does need some getting into.

Id be happy to work on docs over the summer.  July timeframe.  Would need a path to get additional info on some functions and settings.  I'll drop you an email in private and we can see where we are and where we want it to go.

Extremely kind of you !

37
Being in my late teens in the 80's and witnessing how the DAC's in the CD players would go from  16 to 18 to 20 to 24 etc. every 2-3 years, then the sampling frequency even faster than that....

Apologies for the stupid question in advance:

What's the huge deal with this 14bit wall in Digital Photography? Why can't they make an 16 bit processor and give us 16 stops of DR.... ?


38
You guys are awesome..... Like Cayenne, I too wanted a easy install guide (preferably with screenshots and sugar on top).  Eastwind's is a great start... makes me almost consider doing it.

Do you guys know if ML does Focus bracketing (very helpful for Macro for example).

39
I didn't find a thread for this unloved lens, so I started one: All shots downloaded form facebook since I don't have access to originals right now, so they were heavily compressed....


40
5D MK III Sample Images / Re: 5D MK III Images
« on: April 29, 2014, 09:16:34 AM »
Statue of female commander Sheppard of Mass Effect game (Mange edition).
70-200mm IS II @ 135mm f/5.6, 2 430 EX flashes with color gels.
Obviously focused on the hand ;).

Love it

41
5D MK III Sample Images / Re: 5D MK III Images
« on: April 29, 2014, 09:15:25 AM »
Here's "Smiley" (named Smiley for what appear to be rows of teeth on his jawline)

First image Smiley....second image Smiley with distracting nearby "scenery" that almost caused me to miss the shot!  ::)  ;D

In the second one, you finally got the subject in focus. 

42
5D MK III Sample Images / Re: 5D MK III Images
« on: April 29, 2014, 09:09:44 AM »
I took the 300mm f/2.8L II to a fashion show in the local mall to practice how it worked with the 5D3.

1/400 sec, f/3.2, ISO 400, uncropped. (yes, I accidentally bumped the back wheel at f/3.2 instead of f/2.8).
WB is adjusted due to horrible lightning.

This kind of magical shot I see with the 70-200mk. II, the 200 F2 and the 300 mk.ii they are superb lenses...!

43
Lenses / Re: Canon 300mm f2.8is II with 2.0x teleconverter III
« on: April 16, 2014, 02:28:06 AM »
The photo attached was taken with a 5D2.  AF was at least good, I don't have a whole ream of comparison data with other lenses but I could keep up with birds of prey circling.

Jim

Nice shot of Patrick Stewart. Sorry to go off track a bit; I notice the camera struggling to reproduce rich reds. Same thing happens in my 5d3, when I shoot red flowers, the reds bleed over. If I try and fix in post, the shot looks desaturated, if I only reduce red then it looks weak but I regain some textural detail... correcting the red back to proper saturation and I lose textural detail. Anyone else notice this? till this point I thought it was limited to me only...

44
There is something lacking in the feather detail on all three examples. It makes the bird seem lifeless. Is that bird a
Norwegian Blue?

That's just the sensor in the SX50 showing its age...

45
Buyer beware:

I got a 70-200 2.8ii  refurb. It was as sharp as a new one, although the new one was perhaps sharper. I kept the new one since it was same price as refurb ($1999)

I for a 24-70 2.8ii refurb; It was not even close to a new 24-70 in sharpness that I had sampled earlier ... I sold it at a loss and got a Sigma 24-105 ART. A new 24-70 is sharper than the Sigma but I don't make money off this hobby so for now Sigma is ok for me.

There is a reason some lenses are returned and refurbished (or not). It is up to you to decide if you will get lucky or not.

Pages: 1 2 [3] 4 5 ... 102