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-   -   The continuing softbox adventure (https://www.dvinfo.net/forum/photon-management/15559-continuing-softbox-adventure.html)

Josh Bass October 9th, 2003 02:03 PM

The continuing softbox adventure
 
Ok, so I tried to use this softbox for the first time the other day, and noticed after having it on for 20 minutes or so that it was sagging in an unnatural way. After disassembling it and closely inspecting things, it seems the sag was caused by the plastic base around one of the rods attached to the speed ring melting.

Anyway, I asked the guy who sold it to me if has any rods with metal bases, but if he doesn't for some reason, anyone know where I can find 'em? The softbox itself seemed to be okay, except where it came in physical contact with the Tota-light inside it after sagging (flaking off of the reflective interior. . .burn marks).

I just need the rods. It's for a 24x36" box.



By the way, what separates those boxes made for strobe lighting from those made for hot lights?

Mike Rehmus October 9th, 2003 05:27 PM

In a word, materials.

I visited the Channel 7 news studio in San Francisco. They use softboxes made for use with strobes because they like the light. But they admitted to having a few fire extinguishers handy all the time.

You have to have all-metal construction. Plastic just won't make it when you use a softbox with halogen lights.

Josh Bass October 9th, 2003 07:44 PM

Sorry, all metal construction where? You mean the speed ring and support rods?

Mike Rehmus October 9th, 2003 08:02 PM

Yes, the rods and ring. I don't think the plastics they use for intake manifolds on automobile engines would last for long.

Maybe if you had a fan on the setup plastic would survive but then you'd have the fan noise to contend with.

My portable softbox is all metal and the fabric is really heat-proof.

Ken Tanaka October 9th, 2003 08:48 PM

Josh,
When I was first looking into softboxes I, too, considered getting a unit that did not specifically say it was designed for "continuous lighting". Ultimately I shrugged, ponied-up for the extra scratch and got a Photoflex. Many months later I was watching a fashion photo shoot and noticed that their strobe boxes were, indeed, manufactured quite differently than my Photoflex or my Chimera.

As Mike said, "materials".

Josh Bass October 10th, 2003 12:55 AM

Well, the speed ring is from photoflex, and the rods are metal, it's the thick part at the base of each rod that is plastic. . .i just need some aluminum tipped rods or just the aluminum tubing to fit around the bare metal


As for the box, like I said, it was on for 15-20 minutes in my estimation, and seemed fine except where it physically touched the tota after sagging. If I turn out to be wrong, oh well, I'll get a real photoflex box. . .can't be too expensive if I don't get a light or a speed ring with it.

Mike Rehmus October 10th, 2003 11:29 AM

As long as any problem you might have happens when there isn't a customer around, you'd probably be OK.

But if the box goes up in flames and/or it causes damage, you could be in for some problems.

I'd certainly keep a fire extinguisher handy.

What you will probably see is the fabric will delaminate and discolor over time.

Might not be too late to sell what you have to a still photog and get a setup rated for continuous use.

John Jackman October 10th, 2003 08:16 PM

Josh, you don't mention what brand the softbox is. Sounds like you have a strobe bag instead of a hot light unit. Phtoflex hot light bags have metal rod ends.

You may also be using higher wattage in the box than it is rated for. Softbanks are rated for heat, larger ones can handle more watts. Though I think most 24x36 bags would be rated at around 1000 watts -- IF they are for hot lights.

Whoever is doing the lighting at Channel 7 in SF is a moron. There is no difference in light quality between the strobe units and the hot light units, only heat rating. I truly hate to see an unsafe situation justified in such an asinine way.

Bryan Beasleigh October 10th, 2003 08:51 PM

I have a Photoflex softbox, speedring and rods and i can assure you there is no danger of anything melting. This scenario is why i refuse to buy anything except from a reputable retailer. I will buy online but there has to be a bricks and mortar establishment at the end of the line.

In an effort to salvage the situation, it is important to know exactly what brand and model each of the components are. We know you have a Tota and you say it's a photoflex speedring. Worst case is $180 for a new brimstone lined soft box and the metal rods that come with it. Brimstone is the fabric that the Photoflex silverdome is made out of and believe me it doesn't flake. The westcott and chimera are also great stuff but cost more.

Wayne Orr October 10th, 2003 08:53 PM

Seems to me Josh must shoulder some of the blame for his predicament. This thread has really been going on for a few pages under different names, winding inexorably to this unhappy conclusion. Buying gear piecemeal off the internet, in an effort to save money and be "clever," can yield poor results. Josh has received some good advice along the way, from people like Richard Veil of Chimera, which he has chosen to ignore as he marches to his own drummer. Now, it appears he has been sold the wrong gear from some fellow on e-bay who does not care whether Josh burns down the house or not; he just wants his cash.

I fully understand the desire to save money, but the old saw about being "pennywise and pound foolish" certainly applies in this instance. Before you can buy piece-by-piece, you best know what it is exactly you are after.

Sorry if it sounds like I am picking on you Josh, but I have helped you enough in the past to call you on this one. Hopefully, others will learn from your experience.

Wayne Orr, SOC

Josh Bass October 10th, 2003 10:53 PM

Well, as I said, this is a brandless box. . .the seller said, and still says, it works for up to 1000 watts of continuous light. However, he now tells me, this is with his universal speed ring, not the photoflex one which I bought. His speed ring has two parts that keep heat transmission between light and ring way down. However, as there was no way to attach a Tota to the one he was selling, I purchased the photoflex ring.

Of course I accept some responsibility, but having bought 15 or so items off "the bay" and having had no problems 'til just now, I'll keep with it.

John Jackman October 11th, 2003 09:07 PM

If the rib tips are plastic, he fibs.

Some things aren't worth saving a couple of bucks.

Josh Bass October 11th, 2003 10:22 PM

Sigh. . .you're probably right.

It isn't a couple of bucks though. The cheapest softbox I'd be interested in (medium silverdome or movie dome is around $250.

While it was on. . .it was such a beautiful quality of light. . .so it quite pisses me off.

Bryan Beasleigh October 12th, 2003 01:32 AM

Josh
the medium siverdome is $180 at B&H and the cinedome is $190. For the $179.95 the medium silverdome comes with a kit.

All due respects , but you\'ve been given this info before. I know because i gave it to you. You\'ve been given the correct info yet you choose not to listen. When the shortcut backfires, it becomes a catastrophe everytime.


http://www.bhphotovideo.com/bnh/cont...=152322&is=REG


http://www.bhphotovideo.com/bnh/cont...=197002&is=REG

Josh Bass October 12th, 2003 09:44 AM

The cinedome\'s only meant for fresnels, though, right?

Also, it says the silverdome will handle up to 400 degrees Farenheit. Will my Tota be okay in there, even if I lamp it up to 750 watts?

I lost $55 and melted some plastic. . .catastrophe\'s a little dramatic, don\'t you think?

I\'d just like to conclude by thanking everyone involved for making me feel extraordinarily stupid, instead of just mildly so.


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