Re: Exposure compensation

2017-01-26 Thread Steve Cottrell
On 26/1/17, Eric Weir, discombobulated, unleashed: >While I'm At It. You just made that up ;-) -- Cheers, Cotty ___/\__Broadcast, Corporate, || (O) |Web Video Production -- _ -- PDML Pentax-Discuss Mail List PDML@pdml.net

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 1:52 PM, Steve Cottrell wrote: > > On 26/1/17, Larry Colen, discombobulated, unleashed: > >> What I ask is? > > GSH > > (Good Spot Hippy) Nope. -- Eric Weir

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 12:37 PM, Larry Colen wrote: > > On January 26, 2017 9:15:53 AM PST, Steve Cottrell wrote: >> On 26/1/17, Eric Weir, discombobulated, unleashed: >> >>> WIAI, a question for you and Godfrey: What's "chimping"? Taking a >> shot, >>>

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 12:15 PM, Steve Cottrell wrote: > > On 26/1/17, Eric Weir, discombobulated, unleashed: > >> WIAI, a question for you and Godfrey: What's "chimping"? Taking a shot, >> checking the results, adjusting and taking it again? > > I've seen lots of internet

Re: Exposure compensation

2017-01-26 Thread Steve Cottrell
On 26/1/17, Larry Colen, discombobulated, unleashed: >What I ask is? GSH (Good Spot Hippy) -- Cheers, Cotty ___/\__Broadcast, Corporate, || (O) |Web Video Production -- _ -- PDML Pentax-Discuss Mail List PDML@pdml.net

Re: Exposure compensation

2017-01-26 Thread Larry Colen
What I ask is? On January 26, 2017 9:15:53 AM PST, Steve Cottrell wrote: >On 26/1/17, Eric Weir, discombobulated, unleashed: > >>WIAI, a question for you and Godfrey: What's "chimping"? Taking a >shot, >>checking the results, adjusting and taking it again? Yes, people

Re: Exposure compensation

2017-01-26 Thread Steve Cottrell
On 26/1/17, Eric Weir, discombobulated, unleashed: >WIAI, a question for you and Godfrey: What's "chimping"? Taking a shot, >checking the results, adjusting and taking it again? I've seen lots of internet acronyms but not that one. h!! -- Cheers,

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 11:52 AM, Larry Colen wrote: > > Yup, theory and practice. In practice, Lightroom is only good for > compensating by a few stops. With the K100 and K20, when shooting in low > light I was ruled by the histogram, with the K-5,3,1 it guides me. I know

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 11:50 AM, Godfrey DiGiorgi wrote: > > It's not the ability to focus you lose, it's the ability to easily check > focus on the camera LCD or EVF in the field—the image display of a several > stops underexposed JPEG is too difficult to see fine detail in

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 11:29 AM, Gonz wrote: > > Not quite accurate, but close. There is still an amplifier there. > Just multiplying the digital values you get will result in > posterization at the shadow end, its math. You can't create > information out of nothing. If

Re: Exposure compensation

2017-01-26 Thread Larry Colen
Gonz wrote: Not quite accurate, but close. There is still an amplifier there. Just multiplying the digital values you get will result in posterization at the shadow end, its math. You can't create information out of nothing. If you only have 2 bits of information (4 values), then the

Re: Exposure compensation

2017-01-26 Thread Godfrey DiGiorgi
> On Jan 26, 2017, at 7:43 AM, Eric Weir wrote: > > Thanks, Godfrey. I notice the disadvantage you mention in the other > post—possibly losing ability to focus accurately. Can autofocus be trusted in > such situations? It's not the ability to focus you lose, it's the

Re: Exposure compensation

2017-01-26 Thread Gonz
Not quite accurate, but close. There is still an amplifier there. Just multiplying the digital values you get will result in posterization at the shadow end, its math. You can't create information out of nothing. If you only have 2 bits of information (4 values), then the digitization can only

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 10:36 AM, Godfrey DiGiorgi wrote: > >> Thanks, Mark. That helps. >> >> It also raises something else I’ve been wondering about. Can I set ISO to a >> low value, use whatever aperture and shutting settings I want for depth of >> field and capturing

Re: Exposure compensation

2017-01-26 Thread Godfrey DiGiorgi
> Thanks, Mark. That helps. > > It also raises something else I’ve been wondering about. Can I set ISO to a > low value, use whatever aperture and shutting settings I want for depth of > field and capturing motion, not bother about underexposure, adjust exposure > in post processing, and

Re: Exposure compensation

2017-01-26 Thread Godfrey DiGiorgi
> On Jan 26, 2017, at 7:19 AM, Mark Roberts wrote: > > Eric Weir wrote: > >> There are things that were said, though, that I did not hear. That is, >> didn’t understand. >> And probably am not going to understand when you explain it to me. What’s an >> “ISO

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 10:19 AM, Mark Roberts wrote: > > In the early days of digital it was standard practice to apply some > amplification to the signal from the sensor prior to analog-to-digital > conversion. This was how one increased the ISO setting. It's still >

Re: Exposure compensation

2017-01-26 Thread Mark Roberts
Eric Weir wrote: >There are things that were said, though, that I did not hear. That is, didn’t >understand. >And probably am not going to understand when you explain it to me. What’s an >“ISO invariant” camera? In the early days of digital it was standard practice to apply some

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 26, 2017, at 8:15 AM, Eric Weir wrote: > > Pos That shoulda been “Zos”. (And now I see that spell-check did it.) -- Eric Weir Decatur, GA USA eew...@bellsouth.net “...we

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 25, 2017, at 7:08 PM, Rick Womer wrote: > > If you're in Program mode, the exposure compensation adjustment (the > +/- button + the rear dial on the K-5) moves the exposure the desired > number of stops up or down the program line; i.e. generally adjusts > both

Re: Exposure compensation

2017-01-26 Thread Eric Weir
> On Jan 24, 2017, at 1:07 PM, Bruce Walker wrote: > > I never bother thinking about ETTR at all, ever. I just adjust > the exposure in post if I see fit. I’m glad to hear this. --

Re: Exposure compensation

2017-01-25 Thread Rick Womer
Eric, here's a concrete answer from my concrete little brain: If you're in Program mode, the exposure compensation adjustment (the +/- button + the rear dial on the K-5) moves the exposure the desired number of stops up or down the program line; i.e. generally adjusts both shutter and aperture

Re: Exposure compensation: don't optimize for the wrong thing

2017-01-25 Thread Larry Colen
Ken Waller wrote: I've found on my K-3, K20d and K10, in some cases, the individual channels - R, G, B need to be reviewed separately on the in camera histogram to prevent blow out of details in that specific channel, especially R. Exactly. I learned that early on when photographing

Re: Exposure compensation

2017-01-25 Thread P. J. Alling
Didn't I say that, possibly poorly? On 1/25/2017 12:48 PM, Zos Xavius wrote: Actually EV compensation affects manual mode by changing how the meter reads out. So putting settings that "match the needle" in will reflect your compensation amount. Also the green button will reset to the program

Re: Exposure compensation

2017-01-25 Thread Ken Waller
Message - From: "P. J. Alling" <webstertwenty...@gmail.com> Subject: Re: Exposure compensation On Pentax cameras, at least, the histogram is being generated from the embedded, or generated, in the case of live view, jpeg. So you can afford and might even want some clippi

Re: Exposure compensation

2017-01-25 Thread P. J. Alling
On Pentax cameras, at least, the histogram is being generated from the embedded, or generated, in the case of live view, jpeg. So you can afford and might even want some clipping of highlights if you're shooting raw. How much would depend on the jpeg camera settings since those directly

Re: Exposure compensation

2017-01-25 Thread Zos Xavius
Actually EV compensation affects manual mode by changing how the meter reads out. So putting settings that "match the needle" in will reflect your compensation amount. Also the green button will reset to the program line with compensation if it is engaged. On Tue, Jan 24, 2017 at 9:53 AM, Steve

Re: Exposure compensation

2017-01-25 Thread John
On 1/24/2017 3:31 PM, Larry Colen wrote: Bruce Walker wrote: On Tue, Jan 24, 2017 at 11:56 AM, Larry Colen wrote: Also, there are different exposure methodologies. [...] If you're shooting raw, then you generally want to "expose to the right", in order to preserve the

Re: Exposure compensation

2017-01-24 Thread Larry Colen
Steve Cottrell wrote: On 24/1/17, Larry Colen, discombobulated, unleashed: Also, there are different exposure methodologies. If you are shooting to JPEG, then you want to expose for the final image, and if you lose all detail in the highlights or the shadows, well there's only so much you

Re: Exposure compensation

2017-01-24 Thread Steve Cottrell
On 24/1/17, Larry Colen, discombobulated, unleashed: >Also, there are different exposure methodologies. If you are shooting >to JPEG, then you want to expose for the final image, and if you lose >all detail in the highlights or the shadows, well there's only so much >you can fit into 8 bits.

Re: Exposure compensation

2017-01-24 Thread Larry Colen
Bruce Walker wrote: On Tue, Jan 24, 2017 at 11:56 AM, Larry Colen wrote: Also, there are different exposure methodologies. [...] If you're shooting raw, then you generally want to "expose to the right", in order to preserve the highlights, Come again? ETTR actually

Re: Exposure compensation

2017-01-24 Thread Bruce Walker
On Tue, Jan 24, 2017 at 11:56 AM, Larry Colen wrote: > > Also, there are different exposure methodologies. [...] > If you're shooting raw, then you generally want to "expose > to the right", in order to preserve the highlights, Come again? ETTR actually endangers highlights.

Re: Exposure compensation

2017-01-24 Thread Larry Colen
Steve Cottrell wrote: On 24/1/17, Eric Weir, discombobulated, unleashed: I've been puzzled by this. How does it work? There are only three variables--sensitivity, aperture, shutter speed. Doesn't it have to adjust one of those? Then what's with a separate function? If you use your camera

Re: Exposure compensation

2017-01-24 Thread Steve Cottrell
On 24/1/17, Eric Weir, discombobulated, unleashed: >I've been puzzled by this. How does it work? There are only three >variables--sensitivity, aperture, shutter speed. Doesn't it have to >adjust one of those? Then what's with a separate function? If you use your camera on fully manual settings

Re: Exposure compensation

2017-01-24 Thread P. J. Alling
Exposure compensation effects everything while it's on. So if you're getting consistently over or under exposed shots using the cameras suggested settings or if you're in one of the automatic modes, you can dial in the compensation. I've noticed that the K-5II and K20D consistently under