The end of 35mm adapers and hv20s....
- Thread starter Hunter Hampton
- Start date
John Caballero
Veteran
That is fine but the question is once you are in DMovie mode what are your auto exposure options as far as Shutter Priority or Aperture Priority is concerned. It is very important to be able to have the Shutter Priority option available. It could very well be that this two options might be set from that top ring also. We don't know for sure.
What we were also discussing was the option to lock the exposure and apparently there are two ways to do that.
Hunter Hampton
Carbonite Member
Youll be sorry Texanite! Youll be sorry! You may have just lost your membership in the d90 cult...
John Caballero
Veteran
Oh! Oh!
Hunter Hampton
Carbonite Member
Have I been imagining the last 40+ pages of this thread?
ryan brown
lOwEr CaSe Member
I think what he's trying to say is that, YES, we know there is a button to lock exposure, but does that, in fact, actually lock everything down, including matrix metering?
The matrix metering tries to compensate the highlights and darks just a bit, even with the exposure set.
I give up on all the nonsense arguments anyway. I'm buying one hopefully on Sunday, and I'll be joining you in your little D90 Festival:thumbup:
The matrix metering tries to compensate the highlights and darks just a bit, even with the exposure set.
I give up on all the nonsense arguments anyway. I'm buying one hopefully on Sunday, and I'll be joining you in your little D90 Festival:thumbup:
John Caballero
Veteran
The Matrix Metering provides the exposure that you lock. Why would it do anything to it after it is locked? It would defeat the pourpose of locking it I would think.
Hunter Hampton
Carbonite Member
Word. This will be fun. Too bad we cant get nikon to sponsor it... Maybe the next one?
Since there are no electronics in a manual lens the camera can't know if there is a lens attached or not. Manual mode (for stills) works however (even without a lens attached). Don't know if that will ruin the possibility to use manual lenses in D-movie mode since that mode is using auto features.
I read once that there are people who modify manual Canon lenses by adding an electronic circuit to fool the camera that they are of the modern autofocus type, thus enabling some features such as the in-focus indicator. Maybe such mods can be made for Nikon equipment as well. That would make it possible to use manual lenses in movie mode if that wasn't already the case.
Barry_Green
Moderator
Sorry, yes, I'm somewhat disappeared but do try to keep up.
MJPEG is indeed an intraframe-only compression system. It's old, old, old technology, long since surpassed. MJPEG precedes DV; DV is a significantly advanced video editing codec over MJPEG and DV's 13+ years old. MJPEG is "motion JPEG" and it basically amounts to a series of individual JPEG frames, as opposed to even MPEG-1, which was a codec designed specifically for video; I haven't compared but I'd imagine you'd get better-looking video out of even MPEG-1 than you would out of MJPEG. At the bitrates you guys are talking about, and the efficiency of the codec, I would expect it to be pretty rough looking as compared to a modern codec. You can't compare MJPEG with MPEG-2 even; MPEG-2 is significantly better quality at comparable bitrates, even without the interframe compression possibilities; i-frame-only MPEG-2 would look better than MJPEG at any comparable bitrates.
I would imagine that the reason this Nikon is using MJPEG is because they already have a JPEG engine in there for the still frames, and MJPEG is basically a tiny software modification from that. It's certainly not chosen for quality.
But, hey, we're only three days from having some of our more skilled members getting their hands on it, so let's see what their real-world results are (and full high-res grabs from video).
Hunter Hampton
Carbonite Member
You only need to keep really the rolling shutter in mind for 2 things:
1. When shooting under any lights that pulse (florescents, HMIs,ect.) You need to make sure your camera is set to a shutter speed that fits your countries electronic frequency to avoid rolling artifacts in exposure (1/60th is a safe bet in North America, or 1/50th across the Atlantic) When shooting with day light, it doesn't matter what your shutter is at.
2. Whip pans and shaky handheld work might make the rolling shutter stand out. If you can be graceful with the camera, no one will ever notice it.
You can use the AE-L button to lock your exposure in d-movie mode. There is a menu setting that lets you press the AE-L button once to lock it and press it again to release the lock.
1. When shooting under any lights that pulse (florescents, HMIs,ect.) You need to make sure your camera is set to a shutter speed that fits your countries electronic frequency to avoid rolling artifacts in exposure (1/60th is a safe bet in North America, or 1/50th across the Atlantic) When shooting with day light, it doesn't matter what your shutter is at.
2. Whip pans and shaky handheld work might make the rolling shutter stand out. If you can be graceful with the camera, no one will ever notice it.
You can use the AE-L button to lock your exposure in d-movie mode. There is a menu setting that lets you press the AE-L button once to lock it and press it again to release the lock.
Hunter Hampton
Carbonite Member
Why didnt you say so?:beer:
John Sandel
Active member
OK, I have very little experience with dSLRs (I'm old). It seems odd to me that an OEM would not include mechanical couplings in a stills lens-mount so a modern auto-everything cam would at least *operate* with a manual lens attached, but whatever …
I also learned, several hundred pages ago, in this thread, not to ask too-specific questions about the D90, since none of us have one, so I'll restrict my query to users of, say D80s or earlier cams:
If an automatic lens must be attached to get the cam to shoot, is it at least possible to go to full manual on the cam body? If so, what would be the advantage of using a manual lens? Better physical control over focus, etc?
Hunter Hampton
Carbonite Member
I have used older non-af nikkor lenses on a d70, d200 and the fuji s pro series cameras, they do work, but only in M mode and you loose metering functions.
Yes, you can on my D40 and I assume every other digital Nikon.
For me it's an economic question. I have some manual lenses and it seems like a waste of money to buy big expensive auto focus lenses since we still can't (or doesn't want to) use auto focus. =)
And, if there isn't possible to lock the exposure then a manual lens may do that since it can't electronically change aperture.
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John Sandel
Active member
Understood; unknowns are better than unknown unknowns.
I can't imagine shooting the dramatic (as opposed to documentary or casual) stuff I do using anything except full manual on the D90. I'd rather shoot with fixed focal-lengths than zooms, but I'll happily try out the initial kit lens just to test this fabulous beast: the Unicorn of amateur filmmaking!