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  • Hey all, just changed over the backend after 15 years I figured time to give it a bit of an update, its probably gonna be a bit weird for most of you and i am sure there is a few bugs to work out but it should kinda work the same as before... hopefully :)

Underwater Bubble Blowin' Users Group

Holy Cow Mark! you get better looking every day mate! Good combination of salt and water will do that to the complexion i hear....but doing even more so for you amigo. Well, i guess i gotta get down there and take advantage.

#1001 just after 1000
 
Come on down Johnny, the beers 'r' cheap, the women wanton and the water is warm, just how you like it I hear. Just let me know the flight number so I can come meet ya at the airport.

Be good, and if you can't be good, be careful!

Cheers,
Mark.
 
Johnny, give me a heads up if passin' through. I may be able to point you in the direction of some non Taco eatin', Tequila drinkin' own teeth owning, happy to see ya babes......makes a difference from MEHICO Amigo.

Cheers,
Mark.
 
Announcement......

Announcement......

- announcement -

Guys, Gals and anyone else who stops by,

Just wanted to let you all know that this will be my last posting on REDUser. For no other reason than having such a strained time schedule. I am working on private projects, writing a book and just settling into married life. I am sure there are still potential benefits of being a part of this community and I will definitely stop by for a read every now and again.

Most of the guys here who have become friends have my personal contact info so please feel free to use that for contacts as of now. I will not respond further to PM's or other contact attempts stemming from REDUser.

I guess to an extent this is also my own private stand against the enforcement of the real name policy. I have nothing to hide but certainly understand that there are certain users here, high profile users, who simply wish to retain a certain amount of anonymity. Being forced out of their cover is a tactic I certainly don't agree with.

So cheers one and all. Its been a great ride. I trust your goals, present and future, bear fruit and your successes are achieved with the professionalism thats I have seen displayed, in most cases, by those I have had the pleasure of interacting with.

Cheers,
CamDiver
 
Best of luck, Mark. I look forward to see some of your work and I am sure we will bump into each other sometime.
 
Mark: we'll miss you

Mark: we'll miss you

We will miss you. Thanks for starting the thread and adding so much over the past couple years.

Mark Thorpe said:
...

I guess to an extent this is also my own private stand against the enforcement of the real name policy. I have nothing to hide but certainly understand that there are certain users here, high profile users, who simply wish to retain a certain amount of anonymity. Being forced out of their cover is a tactic I certainly don't agree with.

Cheers,
CamDiver
Click to expand...

I'm with you. I, like you, have never hidden my real name but like Ian Bloom pointed out earlier - it just probably isn't a great idea to have your name spread out all over the internet constantly. Also, as you say there are times when the ability for people to be anonymous can bring valuable contributions to the discussion.

I will be staying around because REDUSER has been a great source of leads for AquaVideo (and many thanks to you and this thread for that as well) but I am putting off the name change as long as possible by putting my real name in the signature - as a small nod to resistance.

Take care, man and I hope you and your new wife will find success and/or fulfillment in all your endeavours.

Mike
 
Need help finding a wide angle zoom

Need help finding a wide angle zoom

Fellow underwater shooters,

I have posted a request for help on the Cinematography thread called "Wide Angle Zooms?" which I think some of you on this group might be able to help me with. So, once again, any information would be appreciated.
 
BajaProductions said:
forgot to specify:
cooke 15-40 or optimo 15-40
Click to expand...

Or, Arri Zeiss 15.5-45mm T2.6 Lightweight Zoom (LWZ-1). However, wide zoom lenses are suboptimal for underwater use because position of entrance pupil changes while zooming. Unless, of course, you use it as a variable prime and change the position of the camera for each focal length.
 
Pawel Achtel said:
Or, Arri Zeiss 15.5-45mm T2.6 Lightweight Zoom (LWZ-1). However, wide zoom lenses are suboptimal for underwater use because position of entrance pupil changes while zooming. Unless, of course, you use it as a variable prime and change the position of the camera for each focal length.
Click to expand...

That very well may be true in theory and on white paper--as i see the math tells the truth. However in practice, this lens if unbelievable underwater. I do not own one, but a friend does and I've seen the results and they are stunning images that I think only someone analyzing the image could tell. A 9+ for a video image on any zoom range that i have seen.
 
BajaProductions said:
That very well may be true in theory and on white paper--as i see the math tells the truth. However in practice, this lens if unbelievable underwater. I do not own one, but a friend does and I've seen the results and they are stunning images that I think only someone analyzing the image could tell. A 9+ for a video image on any zoom range that i have seen.
Click to expand...

How do you define 9+ image? I guess we have different ways of rating image quality.

Why not share some results? We discussed it before and I am yet to see a frame resolving more than maybe 800 pixels horizontally (about standard definition quality). Not only I haven't seen good contrast frame, but I also have not seen one in focus.

My experience is that well designed underwater optics perform as well in real life as they do on paper. My focusing scales are all calculated and theoretical values. Focus is pulled off the scales, not by eye (which you can't judge accurately underwater). It is perfect and matches 100% with calculated values.
 
BajaProductions said:
Pawel, this is what happened to the last guy that talked smack about me....he had to walk home from the mountains.......i left him a bottle of water though.

careful big guy.
Click to expand...

Johnny,

I find your unprovoked trolling completely unjustified and annoying. If you have an opinion about the effect of position of entrance pupil on sharpness and contrast of an underwater image, you are welcome to share and debate it. I shared my technical insights. Earlier, I also supported my opinions with my images, so that you could critique them and my techniques to your heart content. However, I am not a subject here and personal remarks won't be taken kindly.
 
Pawel, come on....unprovoked? you must be kidding. And your not so sensitive are you? Wow! I never would have thought you would have been so thin skinned. you sure come on like a bag of bricks. How have i offended you? Did i once criticize your work?

Take a nap and get a bottle of milk and get over it. Your Australian no? what a baby! your mates at the pub would be very disappointed i think. now get some sleep grumpy.
 
Wow, take it easy guys, and thank you both for the replies.

Pawel, of course I would not use the zoom underwater as a zoom but as a variable prime of sorts. The one thing that concerns me is that at its widest, the lens approaches 90 degrees in field of vision, which in my opinion, is the minimum for underwater work I'm happy to live with. Respectfully now Pawel, for someone with such high standards and exacting knowledge of what technology yields the best artistic results, I am dying to see footage of yours shot on something other than HDCAM. Do you have any RED underwater footage yet?

Baja Productions, as for the RED 18-50, yes, it's not a bad lens, but since we need something a bit sturdier for steadicam work and a bit wider for underwater, I may well go with the Arri 15-5-40mm, though I gotta say, I'm VERY intrigued by that HAWK 10-25 lens in Germany...
 
Rudi, I won't be able to show any footage from Red One for several months due to my spinal injury. I am curious the results more than anyone, although I will use the same CinePort optics.

Hawk lenses (or any anamorphics) may suffer from astigmatism through a dome. Not sure.

The Arri LWZ-1 should be good as a variable prime with advantage of using same lens and ability to configure with flat port for longer focal lengths. Also, it will accept Master Diopters for domes with small curvatures.

PS: There is no problem criticising images (that's why they are posted here in the first place) or debating techniques and technical matters. But there is absolutely no need to make personal remarks if someonce's approach is different or doesn't suit someone else's ego.
 
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