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Messages - Lawliet

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166
Canon General / Re: Patent: EF 24-70 f/2.8L IS
« on: September 26, 2013, 02:44:52 AM »
Are there any comparable product names I can search for on ebay except "cinefoil"?

You get the same thing in shorter lengths as "photofoil". ;)
Or from Lee as filter number 280, blackwrap, cinewrap.
Normally about 25USD for a 24"*25'(~60cm*8m) roll.

167
Canon General / Re: Patent: EF 24-70 f/2.8L IS
« on: September 25, 2013, 02:03:17 PM »
This is about what it'll be :-o though I'd like some waterproof plastic and I prefer black to make it look more impressive :-p

Get Cinefoil - matte black all metal construction, heat and water resistant, highly customizable and a product recognized&valued all over the industry.

168
EOS Bodies / Re: Big Megapixel Tidbits from the Week [CR1]
« on: September 25, 2013, 12:32:12 AM »
What are the sales numbers for the 5Diii and D800 and the total sales of DSLRs for each?  I was looking around a bit and couldn't find them.

Don't know about the sales figures...but approached from the other end: our content management buys about 3 times as many shot from medium frames then from D800's.And those in turn get outnumbered about 1:2 by each 5D3,5D2 and the other 18,24MP,whatever-cameras lumped together.

Partially because of the number of users, partially because its hard to get an actual advantage from the D800.
Sure, you have those islands of opportunity, but they are few and far inbetween - the 5D3 is a jack of all trades without real world weakness and if you're willing to retain a one trick pony then the MFs do that trick better.

169
Lighting / Re: Please explain how multi-group ettl preflash works?
« on: September 14, 2013, 04:43:19 PM »
Every group gets its own preflash, for a:b both are metered seperately to find out how much power each has to provide to get the desired lighting ratio. At the same time those seperate preflashes (and the low res metering sensor) make the "don't cross the streams"-rule neccessary, the camera can't tell whether to responses will light two areas of your subject or add due to overlap.

For pre2012 its hard to tell how much of the timings and such are hardwired in the metering subsystem. There just might be some weirdness gremlins be lurking in there.???

170

That's some crazy low-light.

And given that those sensor cells are 8 times the size of those for a still frame camera with about 35MP thats only 3 stops difference in input signal. Are they testing circuits that allow photon noise limited readout?

171
Lighting / Re: Thinking of buying a Light Meter
« on: September 07, 2013, 02:34:05 PM »
How do meters fire strobes?

The mentioned sync socket is one way(& my least favorite), sometimes radio is an option, for Sekonic meters you can get pocket wizard transmitters for example. Or you approach the job from the other side, have the strobes trigger the meter.

172
Lighting / Re: Thinking of buying a Light Meter
« on: September 06, 2013, 07:40:54 PM »
in 2013, why would anyone want a lightmeter?

Mine tells me what each light I use contributes to the final image, if each part of the set gets the intended amount of light, not just whether there are some areas that  happen to reflect a certain amount of light - either as planned or by at least two errors accidently canceling each other out. And allows to keep the exposure consistant and spot on without having the model go through all the changes and even poses.
OTOH I wouldn't miss the built in meter, good thing that the 600EX-RT actually is allowed to use its metering cell instead of relying on E-TTL ;)

173
The other issue with high ISO which your studio photo does not illustrate is the very shallow amout of DR.  Only about 5 stops of DR.  This means its very difficult to capture bright highlights and shadow areas, and requires a lot of post processing.

A related point would be color fidelity and tonality, just as the "brightness map" suffers at high ISO the colors calculated from it during demosaicing take a hit, although more subtle and imo more damaging.

174
I'm wondering specifically about the remote control/shoot part that has received a lot of marketing hype, is it really being used regularly after the first "well, I can do this and that" experiments?

Tangentially - the WiFi tether can link into AIR. Changing the aperture (or ISO) on the camera makes the strobes track power. One less thing to worry about.
Also when you work with precision lighting gear like the Dedolights its more convenient to just take the tablet to the light you're adjusting instead of jumping back and forth to check.

Not to mention some friends who had the idea to strap a camera to one of those RC hexacopters, dragonfly POV ;)

175
EOS Bodies / Re: An Update on the 75+mp Camera in the Wild
« on: August 02, 2013, 07:08:08 AM »
Or start reviewing one copy, and then see what the worst one that a reader of your's got is!

I'd say the lensrental reviews are a good starting point - enough raw data to get a good impression, and as byproduct of a quality management process with little emotional bias.

176
Canon General / Re: People that don't shoot in manual...
« on: August 02, 2013, 02:57:06 AM »
so there is no advantage to manual flash when I can just set up camera in manual mode, and play around with ISO, shutter speed and FEC and get similar results in about the same (or less) amount of time.

Caveat: ETTL will try to keep the amount of light it sees constant. Sounds nice. Until you realize that this means area*intensity is constant, and for example your subject tilting the head a bit changes the first component. The second is what you want constant for consistent images, so you need to evaluate&adjust at every slight change. An RT flash at least lets you use AFlash, thus eliminating most of the randomness inducing factors. Still not very graceful with overlapping zones of illumination, but at least consistently off.

177
Canon General / Re: People that don't shoot in manual...
« on: July 31, 2013, 07:59:06 AM »
what of what are talking specifically

The light meter simply has no clue what it is metering. Unless you want to shoot a gray card or something equivalent you'd have to find out the relative albedo first to get an idea of how much you have to correct the reading or rely on guesswork. Thats more trouble then taking an incidence reading in the first place, nothing gained but an opportunity to make mistakes.

178
Canon General / Re: People that don't shoot in manual...
« on: July 31, 2013, 06:57:45 AM »

Or you can use spot metering in-camera.  Spot meter on your main subject and adjust/average from there if needed.  Generally, I use Average Metering for low contrast scenes and spot metering for high contrast scenes.  Most of the time I prioritize the exposure of the main subject.
The cameras meter still suffers from the 18%-problem, can't deal well with flash and isn't exactly convenient for contrast analysis or metering/establishing contrast ratios between multiple sources. (Not to think about precision. ) Like the difference between a pocket knife and a proper tool.

I'd rather set the camera for the part that is most difficult to control or to the parameters dictated by the concept and light the rest accordingly. Available light==all the lights available to me ;)

179
Canon General / Re: People that don't shoot in manual...
« on: July 31, 2013, 03:52:40 AM »
Let me ask all you manual people:  Do you use the light meter on your camera, or do you eyeball the exposure?

You're missing the obvious choice: the light meter. Not that in the camera, but an incident one, preferable with a multispot option. That avoids the 18% assumption, and keeps the meter from having an uninformed opinion on proper exposure just because of some random AF points may find focus or not.
It also helps with finding proper settings for each flash, no need to guess what part of a histogram might correspond to a part of the picture and solve an  n-th degree equation system based on that...

180
EOS Bodies / Re: An Update on the 75+mp Camera in the Wild
« on: July 25, 2013, 10:00:45 PM »

However aside from DualPixel and VIDEO improvments I still am waiting for a better than average ISO & DR.

Pull a magic lantern and read those dual pixels at two sensitivities. ;)

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