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EstaDive

Member Since 19 Jul 2018
Offline Last Active Feb 03 2019 01:03 AM
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Topics I've Started

WTB: sync cable for ikelite housing to 2x nikonos/sea&sea strobe

03 January 2019 - 02:27 PM

Im looking to buy a sync cable to go from an ikelite housing to two sea and sea strobes.

Autofocus: Contrast detect vs. Phase detect?

27 December 2018 - 10:35 AM

I have been using a Canon EOS-M and have found the autofocus pretty terrible. Even using the focus lights on my YS-D2, the camera struggles to focus on the subject correctly, and it often tries to focus on particulate matter. Its basically useless when trying to focus on far away, low contrast subjects such as schools of sharks or rays.

 

I am trying to figure out if this is a problem inherent in contrast detect autofocus, or more of a specific issue with the EOS-M. I was looking at upgrading to a Powershot G7XII, given the affordability of the camera and housing, but wondering if it will be sufficient or if I would need to go up to a mirrorless camera with phase detect autofocus like the EOS-M5.


WTB: Mirrorless Camera and Housing

26 December 2018 - 11:46 AM

I've gotten tired of my EOS-M's constantly trying to focus on the backscatter and missing the subject and am looking to upgrade.

 

I'm looking to buy a underwater setup (housing and camera) with good phase-detect autofocus capabilities.  I'm not particularly concerned about the model and would be interested in: Nikon 1, Canon EOS M5/M6/M50, Fujifilm X-Pro2/X-T2/X-T20/X-H1/X-A5/X-E3, Olympus E-M1II, or Sony A6xxx/A7/A9 models.


Looking for advice on how to improve photo sharpness

05 August 2018 - 07:07 PM

I just got a strobe, which has improved the quality of my photos tremendously, however I am still struggling with sharpness.  I'd appreciate any suggestions on what I can do to achieve sharper pictures.

 

Here is a photo of a white lined dirona that I took, and a full size enlargement. I was using a Canon EOS-M, 18-55mm lens, shot at f/8, @1/125th, ISO 200, +1 diopter filter, with an Sea&Sea D2 strobe on TTL metering.

 

 

TLguElZ.jpg

 

wYwDnhM.jpg

 

 

[edited to include shutter speed]


Optical flash trigger for EOS-M without built-in flash

19 July 2018 - 10:38 AM

I have an EOS-M with a Meikon housing and I am trying to figure out the best way to trigger an external strobe. I got a 90EX speedlite, which works fine to trigger the strobe. It works with the camera's TTL to instruct the Sea & Sea strobe to output the correct power. HOWEVER, it has an annoying auto-off feature: whenever the camera turns off, the strobe shuts down as well. 

 

I can enable the camera screen power down and disable the camera system auto-off, so the camera will stay on the whole dive. However, I would really like to be able to turn off the camera between dives, and not need to open the housing again to turn the 90EX back on. 

 

I was wondering what my options are and if anyone has reccomendations. So far I have considered:

  1. Just open up the housing to turn the flash back on every dive. Works okay, but I'm worried about getting water into the housing when reopening it.
  2. Leave the camera on between dives. Potentially okay, but I battery barely lasts two dives as it is. Maybe I just need a fresh battery?
  3. Find another flash that doesn't auto power off. I've looked at some others, but they seem to also have power-save features that can't be disabled.
  4. Get a dedicated underwater strobe system. TRT-electronics makes one, but it's really expensive. For that price, I could get an EOS-M3 with a built in flash, and a new Meikon housing for it.
  5. Try to add a new bulkhead to the housing to use an electrical flash trigger
  6. Either try to add a new button to the housing to turn the flash on, or solder something on to the flash button and link it to a new button on top of the camera power button so that the power button turns on/off both the camera and flash.

     

 

Any recommendations, or other, simpler options that I have overlooked?