Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rating: Thread Rating: 4 votes, 4.00 average. Display Modes
Old 18-03-2012, 12:10   #271
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Re: Any Photographers with DSLR's Around ?

I saw this today and captured it:



Amazing, isn't it? Also, Dutch friends left for a nice little cruise in their HR54:



ciao!
Nick.
__________________

__________________
s/v Jedi is offline   Reply With Quote
Old 18-03-2012, 13:02   #272
Registered User
 
Zanshin's Avatar

Join Date: Feb 2007
Location: Caribbean
Boat: Jeanneau 57
Posts: 1,547
Re: Any Photographers with DSLR's Around ?

I have a D7000 and am posting pictures daily on my blog pages (Trip Blogs). Prior to this trip I also got an Ikelite housing for the D7000 and am starting to learn the ins and outs of underwater photography; in fact I just came back from a dive and am copying pictures from the camera to the PC as I write this.
__________________

__________________
-Zanshin (SV Zanshin)
Zanshin is offline   Reply With Quote
Old 18-03-2012, 14:09   #273
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Re: Any Photographers with DSLR's Around ?

Quote:
Originally Posted by Zanshin View Post
I have a D7000 and am posting pictures daily on my blog pages (Trip Blogs). Prior to this trip I also got an Ikelite housing for the D7000 and am starting to learn the ins and outs of underwater photography; in fact I just came back from a dive and am copying pictures from the camera to the PC as I write this.
Very nice

I'm too much of a coward and don't dare to take our Canons under water. I do have a cheap Canon Powershot with housing for that but that camera is beginning to annoy me... eying the G1-X now, for which a housing is coming also.

Please feel free to link some of your pics into this thread now and then

Here is a Passion flower, also captured this morning:


ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 18-03-2012, 23:15   #274
Registered User

Join Date: Feb 2012
Boat: 35' Piver Lodestar
Posts: 27
Re: Any Photographers with DSLR's Around ?

Zabshin,
I highly recommend the Martin Edge book on underwater photography as a starting point. Watch you ports on the Ikelite. Aside from that, keep it well rinsed and it will last you.
__________________
There is no better bilge pump than a scared sailor with a bucket.
Kai Nui is offline   Reply With Quote
Old 28-03-2012, 13:45   #275
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Re: Any Photographers with DSLR's Around ?

Well, it looks like I'm confined to this thread as the mods keep whacking me in every other one; even in those where I didn't post for weeks or months

We're currently traveling through Panama and here's some sights that I captured:


And here is Vulcan Baru, the highest mountain in Panama at just under 22,000':


Both shots done with the EF 17-40mm f/4L USM on Canon 5D2

ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 03-04-2012, 22:18   #276
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Re: Any Photographers with DSLR's Around ?



__________________
s/v Jedi is offline   Reply With Quote
Old 03-04-2012, 22:35   #277
Registered User

Join Date: Sep 2009
Location: Mackay,QLD, Australia
Boat: planning a approx 45ft cat
Posts: 3,406
Images: 3
Re: Any Photographers with DSLR's Around ?

Well, it looks like I'm confined to this thread as the mods keep whacking me in every other one; even in those where I didn't post for weeks or months

Shame can't imagine why they would want to censor you.

cheers
__________________
downunder is offline   Reply With Quote
Old 03-04-2012, 22:54   #278
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Quote:
Originally Posted by downunder
Well, it looks like I'm confined to this thread as the mods keep whacking me in every other one; even in those where I didn't post for weeks or months

Shame can't imagine why they would want to censor you.

cheers
I'm out & about but no real serious subjects. It's not so much they want to censor me as that they can't handle all the complaints about me I may not debate anymore

ciao!
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 03-04-2012, 23:11   #279
Registered User

Join Date: Sep 2009
Location: Mackay,QLD, Australia
Boat: planning a approx 45ft cat
Posts: 3,406
Images: 3
Re: Any Photographers with DSLR's Around ?

Quote:
Originally Posted by s/v Jedi View Post
I'm out & about but no real serious subjects. It's not so much they want to censor me as that they can't handle all the complaints about me I may not debate anymore

ciao!
Nick.
I always enjoyed those debates and learnt much from both sides.
made for interesting threads as discussion developed. Often boring if everyone always agrees.

cheers
__________________
downunder is offline   Reply With Quote
Old 04-04-2012, 08:06   #280
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Quote:
Originally Posted by downunder

I always enjoyed those debates and learnt much from both sides.
made for interesting threads as discussion developed. Often boring if everyone always agrees.

cheers
Exactly. However, I suppose that participating in those, sometimes heated, debates requires a certain amount of brain cells to keep it non-violent and too many members take me disagreeing with them as a personal attack and report it. They also PM me hate messages etc. I got sick of that and the mods too I guess, so now it's only allowed to sprinkle love and flowers :S

cheers,
Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 04-04-2012, 11:45   #281
Registered User
 
ReMetau's Avatar

Join Date: Oct 2010
Location: Marathon, FL
Boat: Hans Christian 33
Posts: 626
Re: Any Photographers with DSLR's Around ?

Quote:
Originally Posted by Zanshin View Post
I have a D7000 and am posting pictures daily on my blog pages (Trip Blogs). Prior to this trip I also got an Ikelite housing for the D7000 and am starting to learn the ins and outs of underwater photography; in fact I just came back from a dive and am copying pictures from the camera to the PC as I write this.

Cool. How do you like it? We have a housing for our point-n-shoot, and we ruined one camera with it due to a bit of sand on the gasket. It would scare me to use my D7000 with it.

Here is a picture of our boat neighbor's car parked at the marina:
Attached Thumbnails
Click image for larger version

Name:	DSC_2653.jpg
Views:	74
Size:	218.2 KB
ID:	39511  
__________________
Don & Diana
s/v ReMetau - a Hans Christian 33
http://www.remetau.com
ReMetau is offline   Reply With Quote
Old 06-04-2012, 18:26   #282
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,197
Images: 4
Re: Any Photographers with DSLR's Around ?

I know both my camera and my own skills are not anything near what has been shown here by Nick and company. But I am curious about zoom capabilities of all the high end cameras that the posters to this thread own. Mine is 12X optical with image stabilization and digital zoom I don't know, but it is crazy. I just shot this out my balcony overlooking the back yard and distant ridge line, maybe 1 mile distant. Hand held, this first one is normal focal length, note what appears to be a home on the ridge to the left of the tree on the left, near the top.


This is zoomed into that home, still hand held.


Can anyone share their zoom capabilities with those high end DSLR cameras?
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 06-04-2012, 19:32   #283
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Re: Any Photographers with DSLR's Around ?

Quote:
Originally Posted by deckofficer View Post
Can anyone share their zoom capabilities with those high end DSLR cameras?
A term like 12x zoom doesn't really describe how much reach your camera has. It only describes the zoom-range of the lens. For example, if you have a 12-120mm lens, it is a 10x zoom... but 120mm isn't much reach at all.

High quality lenses are not "super zoom". The more zoom range, the more complicated the lens design and the less quality can be delivered. Instead, for high quality lenses, you have to switch to another lens.

But let's see, my standard lens is 24-105mm so just over 4x zoom. Another popular high quality lens is 70-200mm so less than 3x zoom. The best lenses are "prime" lenses which have no zoom at all, like my 100mm f/2.8L IS macro lens.

I just ordered a 8-15mm lens which is still a 2x zoom but ultra-wide fisheye.

So I guess you really mean how much reach one has to pull far away objects closer. To find how much reach a camera + lens combination has, you need to use a focal length number. These get multiplied by a factor determined by the camera sensor size, but most manufacturers tell you the 35mm equivalent directly to make this easier. For example, the Canon G1X is 15.1-60.4mm which is a 4x zoom. The big 1.5" sensor multiplies this to 35mm equivalent: 28112mm. A smaller sensor would have multiplied it to much much more, so there you have it: a big sensor gives high quality but less reach for the same lens. If I would put that 15.1-60.4mm lens on my full frame 5D2 camera, it would just be 15.1-60.4mm because a full sensor gives 1x factor. On my 7D it would be 24-100mm equivalent because it has a 1.6x factor. On the G1X it is 28-112mm because it is 1.85x factor.

I see that Sony has superzoom's that have a 35mm equivalent focal length of 24-384mm which is 16x. At 12x I assume you have 24-288mm equivalent. My longest combination currently is 200 x 2 x 1.6 = 640mm. This means I can make that house more than twice as big as the Sony, but at the cost of a 6 lbs camera + lens + teleconverter combination of many thousands of dollars.

I am looking into buying a 70-300mm L-class lens from Canon which comes near what you can do at the high end, but at 70mm is still a telelens at it's widest setting. Also looking at the good old 100-400mm lens which is compatible with the 1.4x and 2x teleconverters I have.

Okay, here's my pic for today: it is a red-legged honeycreeper This is shot at a whopping 640mm focal length so Canon 7D body (1.6x factor) fitted with a Canon 2x Teleconverter (2x factor) to which is a 70-200mm lens fitted. This gives 200 * 2 * 1.6 = 640mm.


Nick.
__________________
s/v Jedi is offline   Reply With Quote
Old 06-04-2012, 20:19   #284
Registered User
 
deckofficer's Avatar

Join Date: Feb 2011
Location: Northern and Southern California
Boat: too many
Posts: 4,197
Images: 4
Re: Any Photographers with DSLR's Around ?

That is red legs, cool. Blues pretty trippy too. Thanks for taking the time on the explanation, with what quality optics have to do, I wouldn't think zoom lenses could be as true as a single focal length. Next time you get the shot, could you take another at a standard focal length?
__________________
Bob
USCG Unlimited Tonnage Open Ocean (CMA)
http://tbuckets.lefora.com/
deckofficer is offline   Reply With Quote
Old 06-04-2012, 20:31   #285
Do or do not
 
s/v Jedi's Avatar

Cruisers Forum Supporter

Join Date: Feb 2009
Location: in paradise
Boat: Sundeer 64
Posts: 8,868
Re: Any Photographers with DSLR's Around ?

Quote:
Originally Posted by deckofficer View Post
That is red legs, cool. Blues pretty trippy too. Thanks for taking the time on the explanation, with what quality optics have to do, I wouldn't think zoom lenses could be as true as a single focal length. Next time you get the shot, could you take another at a standard focal length?
That's the thing... no . "Standard" on a full frame camera is 50mm. On the 7D it is 31mm. The lens can only zoom out to 70 * 2 * 1.6 = 224mm. In order to make a second shot at standard length, I need to put on another lens... and we don't carry one. You can't see the bird with 50mm lens... we only discovered it because we saw it flying to the tree and found it using the camera viewfinder. I just ordered Nikon 8x42mm binoculars to help find the birds.

p.s.... what do you call "standard" length? The wide end of your zoom isn't standard length... it is a wide angle length. Standard is like you see it with your eyes for both field of view (angle) and size of target.

In terms of magnification: divide focal length by that standard 50mm. So, a 600mm lens (35mm equivalent) gives 12x magnification. You see a target 12 times as big as with bare eyes. Very different 12x as the zoom range on the Sony.

Now I get to post another picture Here's the moon at 320mm


ciao!
Nick.
__________________

__________________
s/v Jedi is offline   Reply With Quote
Reply

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



Our Communities

Our communities encompass many different hobbies and interests, but each one is built on friendly, intelligent membership.

» More about our Communities

Automotive Communities

Our Automotive communities encompass many different makes and models. From U.S. domestics to European Saloons.

» More about our Automotive Communities

Marine Communities

Our Marine websites focus on Cruising and Sailing Vessels, including forums and the largest cruising Wiki project on the web today.

» More about our Marine Communities


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 17:06.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2016, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.