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Andaman Sea Blackwater

Started Jan 20, 2022 | Photos thread
OP Barmaglot_07 Contributing Member • Posts: 633
Re: Andaman Sea Blackwater

gokhankuzu wrote:

I couldn't find enough small objects in the night shoot.

In other words, having shot underwater for 25 years, you have failed to produce a single postable image using the settings that you advocate others using. That's, uh, inspiring confidence, oh yeah.

I didn't do the Blackwater dive either. If I do, you'll see very good photos.

Uh huh.

At values above f11, it is not possible to take good photos according to the laws of physics. There is diffraction. It does not provide you any benefit in Dof range, on the contrary, it gives bad photo always.

Bwahahahahaha.

Are you using your pop-up flash to trigger?

No.

Then why 1/160 ?

Because 1/160s is the maximum normal sync speed of all Sony Alpha APS-C cameras. Sony Alpha full-frame cameras can do 1/160s with manual triggers and 1/250s with TTL triggers that have more precise timings. Sony A1 can do 1/400s in full-frame mode and 1/500s in APS-C crop mode.

You told me you have UW Technics TTL converter and I checked it has HSS support, your camera also has HSS support.

Yes.

Go HSS with your converter and flash.

I feel like I'm arguing with a brick wall here. I'll try to make it as clear as I can.

This wonderful close-up image of a sofa cushion is taken from about 15 centimeters away with a 90mm macro lens, using a single Retra Pro flash firing at full power in manual mode, f/22, 1/160s, ISO 100:

The next image was taken with everything exactly the same (camera position, strobe position, focus, strobe settings, etc), but with exposure set to 1/250s:

And this is, again, the same image, still at 1/250s, but with HSS mode activated on the strobe (still doing a full dump):

See the difference?

YS 250s shoots 10fps and continuously burn. I will post a video about it. The battery matters. I triggered YS250s over on 580EXII (in housing-6 pin) TTL-HSS mode, 1/2000 perfectly synchronized.

YS-250 does not do HSS, and it does not do 10fps at anything above minimal power levels.

For macro shots, the power of the flash does not decrease in HSS, you do not feel it.

Examples I have posted above to the contrary.

The flashlight is effective up to 3-5 meters.

The hell it is.

HSS and TTL work together.

Not always. On my system, HSS is available only in manual power adjustment mode.

If you trigger HSS, and Flash triggers as slaves, there is no point in having HSS support in a flash.

This sentence makes no sense whatsoever.

I've heard that Red 64 (HSS ready) is triggered in HSS.

You heard wrong. The only underwater strobes currently on the market with HSS support are Retra Prime/Pro (and the X refresh models) and Seacam SeaFlash 60D/160D. Seacams can do TTL with HSS, but they only support Canon and Nikon TTL; Retras rely on external triggers (UW-Technics and Turtle are the most popular) so they're brand-agnostic, but HSS function is manual-only.

I don't know what you re talking about.

Clearly. The bigger issue is, however, that you don't know what you're talking about either.

 Barmaglot_07's gear list:Barmaglot_07's gear list
Sony a6300 Canon EF-S 60mm f/2.8 Macro USM Sony E 30mm F3.5 Macro Sony E 18-200mm F3.5-6.3 OSS LE Sony E 10-18mm F4 OSS +5 more
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