white balancing raw files

because of technical issues i had to dive with out my strobes today, using only my new olympus E520. (technical issues: i am getting old and keep forgetting things. this time i forgot my tray so i couldnt attach my two strobes to the housing)

i was shooting RAW+jpg. the jpg was at the highest quality setting (probably a bit unnecessary if you have the raw file as well). i was using auto white balance, auto iso and shutter priority on all ambient light photos. i tried some quick white-balancing using picasa and the "pick neutral color" tool on both the jpgs and raw files. i clicked at the same region for the white balancing in both the jpg and raw file (usually a patch of sand or bare rock in the photo).

some samples of post-white-balancing. 

the original (jpg, but the raw is very similar looking, not as sharp and with some more highlights), 

resulting image after manually post-whitebalancing the jpg file (left) or the raw file (right)

  

same deal here: 

white balance done on the jpg versus raw

  

and some more examples of applying white balancing on the raw files (original versus white-balanced):

  

there is a bit of a difference, even with very basic quick fixes (which is all i have time and skill to do). white-balancing raw seems also easier: in the jpg files if you click some seemingly neutral looking color which happens not to be a good area to use, then the photo is all messed up. so some more clicks might be required to get a good result. the raw file is more forgiving it seems. In most of the case in these pictures i used parts of the sand for white balaning (avoiding the highlights on the sand, so i picked the more dark sandy regions). In the photos with the diver (greg) i tried both the sand and the buckles on the tank (good thing he is using steel ones and not black plastic...). the sand was not as good in that particular shot. All photos were taken at bare island east side (left), at roughly  10-12m depth, with seriously crappy weather (rainy windy cloudy cold). visibility was very bad, maybe 4-5m at some points, but maybe a bit more in the last photo above. max auto iso was set to 800 which was not needed, should be ok at 400.

All photos available at my flickr page

new sea & sea DX-2G ?

as i read on digifish.nl/ sea & sea might release the successor to the sea & sea DX-1G. according to what i read on the web, the new sea&sea will be using the ricoh caplio GX-200 (following information from dprview.com):

• 24mm f2.5-4.4 lens, 3x zoom
  
• sensor image stabilization
  
• macro at 1cm
  
• manual focus and raw
  
• hotshoe
  
• no optical viewfinder (an external viewfinder can go on the hotshoe)
  
• ISO to 1600
  
• 12mp

a few reviews for the ricoh camera are listed on dcviews.com. i dont see a lot of differences with the previous model.

panasonic lx3

Might be a great camera underwater. Problem is, no housing exists. Yet. I was reading through some reviews about the lx3, including this one, apparently showing a 2 stop advantage (or some advantage..) over the G9 in terms of noise and lens aperture, as discussed here. 

One link led to another, and i saw this post on dpreview.com about a possibility that UK-germany is planning to make a housing for the LX3. uk-germany was making a housing for the panasonic lx2, as you can see on digideep. odd looking one for sure. 

would be great news. panasonic lx3 looks like a great compact camera: leica f2.0 lens 24-60mm (35mm equivalent), full manual control including manual focus, image stabilization (lens), raw, hot shoe.

cannot find any other information about this at the time. 

is there any other information around?

nimar housing for canon 450D

canon 450D (XSi) is about $700 these days with the kit lens. (USD)

the cheapest housing on the market seems to be the Nimar NI303D, $1150 (USD) including the port (for the standard kit 18-55 lens). 

total under $2K, not bad. the nimar housing has a standard nikonos bulkhead. not sure if it works with inon strobes for TTL. (photos are from the nimar site).  also the housing does not have a hotshoe on top for fixing focus lights.

the dSLR barrier

the barrier to dSLR:
(for the following comparison i use canon G10 versus canon 450D)

price

• top of the line compact is about 600AUD, housing about 300AUD, total of about 1000AUD
  
• entry level dSLR camera with a kit lens is about 700AUD, housing with a port 1500AUD, total 2200
  

weight

• compact is 390gr, and the housing is next to nothing. total of 500-600gr.
  
• dSLR is 425gr without lens, lens is 250gr, housing 3200kg (ikelite housing for canon 450D), total of 4kg.

size

• a compact is compact barely there, can fit in a (big) pocket 
• dSLR needs an extra suitcase and an extra hotel room to fit in when traveling.

features

• a good compact has manual controls, macro, attaching wet lenses, video, all in one
  
• a dSLR is not very flexible (for entry level models), not flexible with strobes
  

So, from a relatively affordable, $1K 0.6kg small, manageable, easy to travel with, all around camera that can do everything at any time, you go to a very expensive 4kg, huge, not-so-flexible-at-all set up. so (entry level) dSLRs are much more expensive, terribly heavier, ridiculously bigger, horribly inflexible.

and that's good: if we take into account all those issues, the price difference between the top compacts and entry level dSLRs is the least of the problem. as for the rest, well, one just has to get used to carrying a closet around while diving. until technology manages to catch up.

new Canon G10 and WP-DC28

canon announced the G10 (top of the line compact) as well as a matching underwater housing WP-DC28. (photos are from the canon website)

about the G10: 

• 28mm wide lens with 5x zoom, 
  
• i-constrast, which is something that claims to boost brightness in order to retain detail in the shadows. sounds great.
  
• one more dial, for exposure compensation
  
• raw, 
  
• 1/1.7" CCD sensor with loads of megapixels.
  

  

the WP-DC28 housing looks a lot like the WP-DC11 for the G7 (and the one for G9) with a large oval shaped lens barrel which made it impossible to use wide angle wet lenses for the previous models. i guess the same will be true for the G10.

any hope ikelite will choose to make one of their new "compact" housings for this camera? that would be great.

fantasea dSLR housings no more?

cannot really find much info on fantasea housings for dSLR cameras. did fantasea give up on making housings for SLRs and only makes compact camera housings now?

panasonic G1 - micro fours thirds

panasonic announced the first micro four thirds camera, the Lumix DMC-G1, along with two micro four thirds lenses, 14-45 and 45-200 that include image stabilization. (the photo is from the panasonic press release)

here are some links to read more:

• imaging resource with hands-on preview
  
• dpreview hands-on preview
  
• dcviews.com (press release)
  
• divephotoguide.com (press release)

Panasonic also announced that we should expect a couple more (micro four thirds) lenses early 2009 (one of them is a 14-140). the new panasonic g1 is smaller than the olympus E420 in every dimension (the imagingresource.com site has a good photo comparing the two cameras). 

 

some good things:

• 23 area auto focus, 
  
• very fast contrast detect auto focus (according to the dpreview preview), 
  
• electronic viewfinder (optical viewfinders with pentaprisms mirrors and all that, are sooo last century)
  
• depth of field preview
  
• shutter speed effect preview (camera changes the refrsh rate of live view to mimic the shutter speed effect)
  
• 3 inch swivel lcd monitor
  

other things:

• video/movie mode? why no video?
  
• and where are the underwater housings?
  

pricing is expected in early october according to the press release. but this site mentions an estimate of 840USD (inc lens). the camera should be available mid november.

new Nikon D90

The new Nikon D90 has been announced (see preview on dpreview). the D90 has a new 12.3MP DX format CMOS sensor, offers a movie mode, live-view with contrast detect AF, ISO 100/200-3200/6400, 3" lcd, and image sensor cleaning. There is also a compact gps unit available that connects on the hotshoe.
the price tag is 1000USD (camera body only) on bhphotovideo.com, expected in october.

hmm. i dont know.

i will just continue to look forward to the first olympus micro four thirds camera...

housing for pentax w60

the pentax w60 was announced on 23-May-2006 (no, no, i am not that late finding out, here, i posted about it earlier..). I just found (through digifish.nl)some information about a Seatool 40m housing for it. But the only page i've seen is in japanese; here is a link to a google-translated version of the seatool.net page.



the page mentions a price of about 350AUD and a release date of august 8. and some accessories, such as M67 adapter, optic fibre adapter, and a close-up lens. Apparently the seatool products are available directly from seatool.net (japanese only) website. You can buy all the w60 goods here (again this is a link through google-translate).
The pentax optio W60 is waterproof itself (4m) has a wide 28mm lens, ISO to 6400 (on a 1/2.33" 10mp sensor..) , manual focus, no image stabilization.

was wondering if anyone has seen this housing available in any other site on the web. the US version of seatool (seatoolUSA.com) only lists dSLR and video camera housings as far as i could see.