ARClark

ARClark

Lives in United States Raleigh, United States
Works as a Retired Env Planner turned Nature Photog
Has a website at http://arclark.smugmug.com/
Joined on Nov 5, 2005
About me:

Serious amateur photographer for over 40 years. Primary interest these days is nature photography, especially birds (stationary and on the wing), macros and landscapes.

Comments

Total: 58, showing: 1 – 20
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On photo Tundra Swans Take Flight in the Random Items - Challenge 25 challenge (2 comments in total)
In reply to:

Highlands: What a beautiful shot! Very elegant. Congratulations.

Thanks, Highlands!

Link | Posted on Sep 19, 2016 at 20:32 UTC
In reply to:

FuhTeng: Good, first time I've seen a mention of a Tamron-equivalent to the Sigma dock (I haven't kept up with the newer Tamron lenses). I'm intrigued.

So how would a 1.4x TC on this work on my Nikon D7100? I assume it'd work poorly, if at all.

FYI. was just reading the Tamron TC press release and saw this table. The footnote indicates that AF will work when using the 1.4x TC on cameras that offer f/8 autofocus. However, for low contrast/luminosity subjects, images may be out of focus. Will be interested to see how this works out in user testing.

Available focusing mode when used with SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022)
When using viewfinder When using live view mode
With 1.4x teleconverter AF*1*2/MF AF*2/MF
With 2.0x teleconverter MF AF*2/MF

*1 Autofocus functions normally on any camera that offers F/8 autofocusing (see your camera's instruction manual for your camera's ability).
*2 Subjects with low contrast and/or luminosity values can sometimes result in out-of-focus images.

[1]Compatible model is SP 150-600mm F/5-6.3 Di VC USD G2 (Model A022) (As of September 1; Tamron)

Link | Posted on Sep 1, 2016 at 21:53 UTC
In reply to:

FuhTeng: Good, first time I've seen a mention of a Tamron-equivalent to the Sigma dock (I haven't kept up with the newer Tamron lenses). I'm intrigued.

So how would a 1.4x TC on this work on my Nikon D7100? I assume it'd work poorly, if at all.

Oops. You're right, and so was Kharan. :)

Link | Posted on Sep 1, 2016 at 21:06 UTC
In reply to:

FuhTeng: Good, first time I've seen a mention of a Tamron-equivalent to the Sigma dock (I haven't kept up with the newer Tamron lenses). I'm intrigued.

So how would a 1.4x TC on this work on my Nikon D7100? I assume it'd work poorly, if at all.

AF should work with the 1.4x TC for those cameras that can AF with a max. f/8 lens opening. I believe the f/6.3 shuts down to about f/7.1 with the 1.4x TC. The 2x would pose a problem, though.

Link | Posted on Sep 1, 2016 at 17:49 UTC
On photo Tuscany in the The Green Green Grass of Home. challenge (2 comments in total)

Thank you. Perhaps it wasn't green enough for the reviewers. ;) Nonetheless, I appreciate your comment.

Link | Posted on Mar 11, 2016 at 12:59 UTC as 1st comment
On photo Ice Slabs in the Shades of Grey in Nature challenge (4 comments in total)
In reply to:

cjf2: I thought this a great entry for this challenge too. Nice shot.

Thanks, almost I must say yours is a deserving winner. Amazing detail!

Link | Posted on May 3, 2014 at 21:06 UTC
On photo Ice Slabs in the Shades of Grey in Nature challenge (4 comments in total)

Thanks for the kind words, Ruth. Much appreciated.
Alan

Link | Posted on May 3, 2014 at 16:09 UTC as 2nd comment
On photo Spinner in the Rear View #2 challenge (8 comments in total)

FYI - I need to make a correction to the Exif data, above. I actually shot this with a Nikon AF-S 300mm f/4 lens with a 1.4x teleconverter and with the camera set on a 1.2x crop. That all adds up to the stated 500mm focal length.

Link | Posted on Jan 11, 2014 at 23:21 UTC as 2nd comment
On photo Spinner in the Rear View #2 challenge (8 comments in total)
In reply to:

The Mick: Congratulations on a great shot! That's harder to capture than you've made it look. ;o)
Regards,
Mick

Thanks, and yes, I took more than a few shots to get this image. :)

Link | Posted on Jan 11, 2014 at 22:23 UTC
On photo Spinner in the Rear View #2 challenge (8 comments in total)

Thanks, Ruth, and I appreciate you hosting the challenge.
Alan

Link | Posted on Jan 11, 2014 at 00:08 UTC as 6th comment
On photo Unfurling Squash Bud in the Flowers - But Different challenge (6 comments in total)

Thanks for the kind remarks. I was thrilled to find this bud in my back yard and grateful I was able to do it justice in photographing it.

Link | Posted on Jan 3, 2014 at 22:23 UTC as 1st comment
On photo White Sands of gold in the New Mexico challenge (6 comments in total)

Congratulations on a beautiful capture! By the way, what's up with the shutter speed? :)

Link | Posted on Oct 20, 2013 at 14:05 UTC as 1st comment
On photo Ruby Throated Zeroing In in the My best picture this week challenge (4 comments in total)

Love the sharp foreground detail contrasted against the beautiful bokeh. Nicely done!

Link | Posted on Sep 21, 2013 at 12:38 UTC as 1st comment | 1 reply
On Challenge:8683 (11 comments in total)

If I was judging this, I'd say about half of the entries met the 5 objects rule. And at least one is a streetscape, not a still life.

Posted on Aug 30, 2013 at 00:43 UTC as 4th comment | 2 replies
On photo snake with frog in the Survival Of The Fittest challenge (2 comments in total)
In reply to:

Bufalochip: Striking image. Congratulations.

Agreed, but not one I'd want to face first thing in the morning. :)

Link | Posted on Jan 21, 2013 at 14:56 UTC
In reply to:

lxlex: Nice shot, makes me feel like jumping.

Don't do it. :)

Link | Posted on Dec 24, 2012 at 02:37 UTC
In reply to:

Chris Noble: I thought contest entries are supposed to be anonymous?

No problem, but didn't want to respond till after the voting. :)

Link | Posted on Dec 4, 2012 at 02:47 UTC
In reply to:

Chris Noble: I thought contest entries are supposed to be anonymous?

You know, I never even thought of that when I responded. It was just reflexive to a compliment. Had not received one before while in this phase of a challenge.

Link | Posted on Nov 23, 2012 at 15:10 UTC
In reply to:

Jen003: Brilliant - good luck!

Thanks!

Link | Posted on Nov 21, 2012 at 23:36 UTC
On photo July Beauty in the Beautiful Bokeh (Background) challenge (2 comments in total)
In reply to:

The Mick: This one is beautiful! Fine job!

Thanks very much.

Link | Posted on Oct 24, 2012 at 16:31 UTC
Total: 58, showing: 1 – 20
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