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Cerianthus

Member Since 15 Aug 2005
Offline Last Active Today, 01:44 PM
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#380650 Using Teleconverters on Full Frame

Posted by Cerianthus on 15 January 2017 - 11:59 PM

PS; if you read German (or dont mind google translate), an interesting test of converters is found on http://www.traumflie...er/overview.php




#380649 Using Teleconverters on Full Frame

Posted by Cerianthus on 15 January 2017 - 11:53 PM

If you need a teleconverter on all your lenses, would you not be better off shooting with a crop camera ?

 

My Kenko teleplus 1,4 converter has exactly the same type number as the tamron telconverter you are mentioning, so there might be something in it that they are the same. At my camera (canon70D)  the displayed f stop does take the converter to account. Also in the exif, the focal length is adapted. I think it is odd that the info is displayed and adjusted in my camera and not in yours.

 

when I use it with my f2.8 USM 100mm macro (not the L lens), I have to take care to avoid using microfocus adjust. for some reason, the camera will lock up (or just not release the shutter) if I use this combination (100mm, teleconverter + microadjust). If it is working, it is reasonably fast.

 

If you would use a teleconverter and a diopter together, you need a good focus light, or be probably better off prefocussing at 1:1 and shooting when the image is sharp in the viewfinder.

 

The canon teleconverters are really only aimed at the longer lenses, and wont work with wide angle and macro lenses (although they would match up nicely with your 70-200mm )




#380299 Tokina 10-17 lens with 8 inch Nauticam dome

Posted by Cerianthus on 06 January 2017 - 12:42 AM

And keep in mind that he lens is still not a ff lens.


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#379777 WTB Ultralight Clamps and Arms

Posted by Cerianthus on 20 December 2016 - 12:10 PM

If Andreas needs another reference, I can give a positive one too on the clamps I bought from him.


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#379715 Mares fin bungee breakage

Posted by Cerianthus on 18 December 2016 - 08:52 AM

Sometimes stuff breaks. Get a bit of bungee for a few $$ and repair it... I dont really see the problem...For unbreakable, move to spring straps....




#378839 Will TTL still work with 1/64 Built In Strobe?

Posted by Cerianthus on 17 November 2016 - 09:34 AM

Ttl mimics the on camera flash, so no.


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#378614 DIY Ball clamps for underwater photo/video light arms system

Posted by Cerianthus on 09 November 2016 - 06:56 AM

Its a special gemeente (council), so yes....  and now, you're right on the mission.

 

A nice joke on this is the underwater photographer who says on his deathbed 'dont sell all my uw gear for the price i told you it costs'

 

Vinkeveen is allright as a freshwater dive, but Zeeland is really nice, and it is not always raining here like in Manchester (my wife is british and lived there). If you ever feel the need (maybe when its warmer again), give me a PM....




#376270 Zen and the Art of Housing Flood Prevention.

Posted by Cerianthus on 21 August 2016 - 07:45 AM

i heard (on the ancient medium of an email list) a tip from the late Jim Church : put a q-tip in your mouth when you are preparing your housing. It will help you not be distracted by talking....




#374367 new website

Posted by Cerianthus on 06 June 2016 - 09:59 AM

Pretty nice Albert. Started to follow you on Flickr as well.




#373535 For Sale: Sea & Sea, Nauticam & FIT...

Posted by Cerianthus on 12 May 2016 - 01:15 AM

Hi John, thanks for the answer. I am looking for ulcs ones, so I am no longer interested.




#373395 Remote Strobe Trigger

Posted by Cerianthus on 08 May 2016 - 01:56 AM

I dont know what remote slaves Alex uses, but the ikelite ones are quite sensitive. Also possible to use an extension cord to increase the distance. I picked 2 old ones up on ebay . Played around on one dive last year. The regular little bit of cord is about 50-60 cm (2 foot), but you can use an extension. Only works with ikelite strobes though.

 

19634166709_92126a53f4_z.jpg20150606-IMG_8890 by Gerard Wijnsma, on Flickr




#371415 Canon 100 macro USM or canon 100 macro USM IS or 60 macro

Posted by Cerianthus on 11 March 2016 - 01:44 AM

Not if I click it.

wetpixel.com/forums/index.php?/topic/56878-Definitive-Macro-for-Canon%3F


#371367 Canon 100 macro USM or canon 100 macro USM IS or 60 macro

Posted by Cerianthus on 10 March 2016 - 01:49 AM

Check this thread among similar ones. Definitive Macro for Canon?
http://wetpixel.com/...acro-for-Canon?


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#367635 Definitive Macro for Canon?

Posted by Cerianthus on 28 November 2015 - 12:05 PM

depends, if you dive often in low viz, and also are interested in fish portrait etc, then the 60mm would be better (shorter focus distance, less water and gunk in between). In clear water the 100m gets more interesting... check if the sigma 105 mm has internal focus (otherwise there might be a length difference between infinity and close focus....  (in the end, get both the 60 and 100 mm :-)




#363522 Lightning trouble

Posted by Cerianthus on 23 July 2015 - 12:25 PM

The floaters people use are to balance the buoyancy of the whole setup, not to keep arms up, if the arms are too loose just turn m a bit tighter
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