September 17, 2014, 06:08:33 PM

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Messages - Jim Saunders

Pages: [1] 2 3 ... 56
1
Lenses / Re: how to get 300 2.8
« on: Today at 12:05:07 AM »
Two fliers on the plot:

200 f/2.8 & crop; it could work if you're not producing big prints.

300 f/4: Sharp, cheap, light weight, if you can afford a stop.

I put these to you as questions to consider to make sure you need to spend for a 300 f/2.8; you're the one who knows for sure.

Jim

2
EOS Bodies / Re: How can we improve on 5D3 to 5D4?
« on: September 16, 2014, 11:58:35 PM »
-carbon fiber or Ti body. hell my inexpensive tennis racket from Walmart is made from a Ti carbon weave. it cost like $30-40 weights nothing, is super tough.  really, get it done canon.

This is a joke, I presume.

I assume as much; titanium and carbon fibre in any meaningful application does not change hands that cheaply.

Jim

Dunno, how much metal is in a tennis racket compared to a camera body?  I found a titanium racket at Amazon for $35.

I could be convinced otherwise but I expect marketing had more to do with titanium mentioned in the context of the racket than engineering.  It could be titanium whiskers in the matrix of carbon fibers to essentially pin the layers together, in which case it would be a fairly small proportion by weight.  (Then again it could be white titanium dioxide paint.)

Titanium sheet alone is miserably expensive never mind anything cast and machined from it.

The relevant question is whether either material would make a meaningfully better body; magnesium is affordable and easier to cast and machine than titanium.  It also conducts heat and electricity well enough to be useful; titanium conducts both poorly. Carbon fiber isn't really suited to the job of filling fine details and supporting many threaded bosses.

I'd like everything to weigh less, but I'm pretty sure Canon's engineers have a solid grasp what works and is still reasonably affordable.  I would dearly like to sit in on their brainstorming though...

Jim

ETA - If I was going to machine a tennis racket out of anything I'd try beryllium; it'd be heavier and your machinist might get lung cancer but it'd be stiff.

3
Lenses / Re: Lenses that you want Canon to release next
« on: September 16, 2014, 11:24:50 PM »
135L II

With IS the budget be damned; that and a 200 f/2 for indoor sports.

Jim

4
EOS Bodies / Re: How can we improve on 5D3 to 5D4?
« on: September 16, 2014, 11:23:44 PM »
-carbon fiber or Ti body. hell my inexpensive tennis racket from Walmart is made from a Ti carbon weave. it cost like $30-40 weights nothing, is super tough.  really, get it done canon.

This is a joke, I presume.

I assume as much; titanium and carbon fibre in any meaningful application does not change hands that cheaply.

Jim

5
EOS Bodies / Re: How can we improve on 5D3 to 5D4?
« on: September 15, 2014, 11:57:50 PM »
ISO compensation in M.
Integral dovetail on the bottom or dual mounting screws.
Stiffer spring or second action for the lens release button.

Jim

6
Animal Kingdom / Re: Show your Bird Portraits
« on: September 15, 2014, 10:01:47 PM »
I don't know what it is.  I didn't shop it either, I wish I had because then it would make more sense.   ???  It is however the triumph of five-figure ISO and LR5 over good lens selection.

Jim

7
Lenses / Re: Should I try to fix my Canon EF 28-70mm f/3.5-4.5 II?
« on: September 15, 2014, 09:09:05 PM »
Roger Cicala, the white courtesy phone...

Jim

Well, thanks for the advice Jim, such a helpful bunch.

If he reads this, he'll probably have a useful answer for you.  If he doesn't answer here, perhaps an e-mail in his direction is worth it.  I don't know about fixing this lens, but I'd appreciate it if you'd keep in mind my taking the time out of my life to point you in the direction of an answer to your question.

Jim

Jim,

Your response went over my head, I apologize, I have no idea who Roger is, let alone the white courtesy phone.
Now that you explained your response, I get it...10-4

In that case I should apologize for being testy; for context Roger's blog is at lensrentals.com/blog and there's an awfully good chance he has seen the inside of one of these.

The white courtesy phone is directly a nod to this but to white courtesy phones everywhere.  I mean if you can still find one...

Jim

8
Lenses / Re: Which Tilt/Shift lens to choose?
« on: September 15, 2014, 08:37:39 PM »
Anyone try the Schneider 2.8/50?  It it expensive, heavy, and who knows about filters but I think it is the right length for a job I have in mind.  I expect it is a lens where I can do well enough on resale to make it cheaper to own briefly rather than rent.

Jim

9
Lenses / Re: Should I try to fix my Canon EF 28-70mm f/3.5-4.5 II?
« on: September 15, 2014, 08:35:09 PM »
Roger Cicala, the white courtesy phone...

Jim

Well, thanks for the advice Jim, such a helpful bunch.

If he reads this, he'll probably have a useful answer for you.  If he doesn't answer here, perhaps an e-mail in his direction is worth it.  I don't know about fixing this lens, but I'd appreciate it if you'd keep in mind my taking the time out of my life to point you in the direction of an answer to your question.

Jim

10
Lenses / Re: Should I try to fix my Canon EF 28-70mm f/3.5-4.5 II?
« on: September 15, 2014, 08:01:21 PM »
Roger Cicala, the white courtesy phone...

Jim

11
EOS Bodies / Re: What about this new battery- the LP-E6N?
« on: September 15, 2014, 02:23:34 PM »
^I think somebody posted here in CR that the N has additional juice ???; oh well good to know. .

The specs listed at Adorama's product pages list them same capacity.  I see no reason to buy the new batteries for older bodies, and the new ones are an extra $20.

Jim

12
Animal Kingdom / Re: Show your Bird Portraits
« on: September 14, 2014, 11:15:58 PM »
Sunshine at last.

Jim

13
Software & Accessories / Re: Lightroom 5 Plugin for focus points?
« on: September 14, 2014, 09:22:41 PM »
I'm pleased to note that this plugin is the exception to the too-good-to-be-true rule; well done that man.

Jim

14
Software & Accessories / Re: Lightroom 5 Plugin for focus points?
« on: September 14, 2014, 11:51:09 AM »
Hi, I published a plugin for this recently, maybe you'll find it of interest.
http://www.lightroomfocuspointsplugin.com
It shows focus points for all all (post-2002) Canon DSLR and all Nikon DSLR. Currently needs Lightroom 5.

-Chris

If this is legit and not just well-tailored click bait then you're about to become popular around here.

Jim

15
Lenses / Re: What New Lens are You Most Excited About?
« on: September 14, 2014, 12:01:51 AM »
I just caught wind of the Schneider 50mm f/2.8 tilt-shift.  I'm not sure if I want more to use it or look at it, but either way I want one.

Jim

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