Recent Posts

Pages: [1] 2 3 ... 10
1
The "old" CPU print is transferable to a new contact block. However, utmost care is called for in extracting the print from the existing block so as not to rip the print lane. You have to remove the fixing screws and take the bayonet off in order to get access to the internals of the block. It has been done before thus entirely feasible, but a steady hand and patience would be helpful during the process ....
2
Lens Talk / Re: 20mm for landscape
« Last post by David H. Hartman on Today at 13:18:52 »
I would avoid hand holding a 20mm lens at 1/30th second in landscape photography at all cost, that is if I can possibly avoid it. There is no escaping the fact that a subtle softness is the inevitable result.
The problem was no permission to use a tripod. The setting was a rehab hospital. Also the permission to photograph the atriums wasn't official so a tripod might have drawn the attention of a supervisor who might say no to any photography. 

Dave
3
Smart and tasteful use of the focal lenght. Love the arrangement, layers, textures, colors, shapes, etc to draw attention and pull me in the image while enjoying the setting.

   If you plan on putting in back on the shelve for a long period, think about me  ;D

Thanks for the kind comment.
I've been using the 18mm f/3.5 more often because of the smaller size.
After I read about the huge discount B&H put in this lens I took it for a session and I think now the 18mm will be in the shelf.
4
Mathew, wonderful spot.
5
I have supplied replacement blocks before.

Yes, thank you for the contact block!
7
Coincidence and causality are very hard to distinguish in real life phenomena over time. Not only in this case.
8
If you proceed to your periodical screen (re)calibration and you just have upgraded to Mac OS High Sierra, there are chances that your new ICC profile is not operational.  Indeed, the new curb of the ICC profile will not be flashed into the Look Up Table (LUT) of your graphics card.  This seems to be a known problem by Apple and they are supposed to work on a solution... DataColor - the provider of the Spyder calibration hard- and software - provided me with a workaround solution: please go to System Preferences -> Displays and click on the Colour tab: by simply clicking on the Tab, the ICC profile will be flashed into the graphic card (LUT).

I had the problem, and it worked out.
9
Smart and tasteful use of the focal lenght. Love the arrangement, layers, textures, colors, shapes, etc to draw attention and pull me in the image while enjoying the setting.

   If you plan on putting in back on the shelve for a long period, think about me  ;D
10
A rhetorical question. Why do you expect 'me' to explain something that has nothing to do with me?
I ask you because you proposed the idea that PDR measurements should be correlated with pricing.
Whom should I ask instead?

Personally I don't believe that the pricing is a good guideline to predict how a given camera should perform in a PDR measurement (when it is correct).
Pricing is likely a function of many things, none of which may be directly related to PDR.
Even if Nikon did measure some metric which is strongly related to PDR and used it to price their cameras, they also likely would have a dozen other variables, like resolution, frame rate, build, number of buttons, viewfinder, etc. to determine pricing.
Since we do not know how they do it, it is impossible to predict how pricing correlates with PDR.

As for other reviewers/testers: you have to closely examine how and what they measure in order to come up with a prediction of whether it ought to correlate with PDR or not. They might measure something irrelevant or they might want to measure something relevant but with a flawed methodology. Many reviewers don't do any precise measurements at all, but only look at images by eye. As such, they are very prone to confirmation bias ('that camera has such a high price point, it has to test superior, so I'm not paying so much attention when it does').

Remember, just because someone 'runs a test' and 'posts a graph' doesn't make the presentation correct.
Correct, the presented data may be erroneous.
It was pure coincidence that the error in data analysis coincided with your pointing out a mismatch between PDR and pricing.
In fact, in any number of other camera comparisons (like the D810 and D750) you may also see a mismatch between PDR and pricing (hence my question above).
Are you suggesting that these measurements all suffer from the same error in data analysis?
Pages: [1] 2 3 ... 10