September 19, 2014, 11:57:19 PM

Show Posts

This section allows you to view all posts made by this member. Note that you can only see posts made in areas you currently have access to.


Messages - Jim Saunders

Pages: [1] 2 3 ... 56
1
Regional Boards / Lens rentals in western Belgium?
« on: Today at 08:13:45 PM »
Anyone know a place?  I'd prefer a Schneider 2.8/50 PC but a Canon 24 TS is probably useable.

Jim

2
Lenses / Re: Brand New 300mm f/2.8L IS II or 2nd Hand 400mm f/2.8 L IS
« on: September 18, 2014, 11:53:06 PM »
I'd factor the cost of service into the 400, but I'd lean in that direction.

Jim

3
Lenses / Re: Lenses that you want Canon to release next
« on: September 18, 2014, 08:33:39 PM »
I want a work over of the normal to short telephoto lenses with is, like the 24, 28, and 30 is.

Maybe I get you wrong (or incompletely) but what is missing for you from the 16-35 f/4?

Jim

4
EOS Bodies / Re: LP-E6N on the 7D MK II
« on: September 18, 2014, 09:56:28 AM »
The advertised figures show no difference in capacity between them, so why worry?

Jim

5
EOS Bodies / Re: LP-E6N in 5DMK III
« on: September 18, 2014, 12:18:19 AM »
If the N batteries are built to more recent Japanese safety standards, they might end up being easier to carry on flights; they're small compared to laptop batteries but non-trivial.  Other than that I don't see any reason other than availability to make the change.

Jim

6
EOS Bodies / Re: LP-E6N in 5DMK III
« on: September 17, 2014, 11:39:19 PM »
We need someone who has used the new battery for 1D X (LP-E4N) in a 1DsIII, 1DIII or 1DIV and can tell if it had a longer life compared to the LP-E4.

That wouldn't be a directly useful comparison: the LP-E4N is advertised as having an additional 150 mA·h capacity over the LP-E4, while the capacity for the LP-E6 and E6N is advertised at 1800 mA·h.

Jim

7
Lenses / Re: Lenses that you want Canon to release next
« on: September 17, 2014, 10:55:05 PM »
Lenses that I think Canon has the capability to produce in the near future:

Now for the lenses I *personally* fantasize about seeing Canon make, but doubt they can or will:

8.  EF 300/1.8L USM.  Canon has designed and patented it, at least on paper.  It would be a beast, but without a doubt, there would be nothing remotely comparable in the 135mm format world.

Your first four seem probable.  #8 not so much, but I guarantee you I'd rent the hell out of one if it ever happened!

Jim

8
EOS Bodies / Re: AE-1 Styled DSLR from Canon?
« on: September 17, 2014, 10:12:38 PM »
Do I need something like that?  No.  Would I play with it at a camera store?  Probably.  Maybe run off enough to keep one at each camera store just for the sake of a conversation piece.

Jim

9
Another angle:  If I was going to buy your lens, I'd give you its value given its cosmetic condition less repairs and shipping; as long as you have the box etc then I regard it as worth fixing.

Jim

10
EOS Bodies / Re: How can we improve on 5D3 to 5D4?
« on: September 17, 2014, 08:01:53 PM »
actually i wasn't kidding at all. i get the sense i know a great deal more about Ti and carbon fiber than you guys do. not only that you guys must not very active people, tons of stuff is made from these products these days. you certainly can buy a Ti carbon weave racket just about anywhere. expensive? well, not in the amount we're talking about for a camera body. In the fields of racing/aero/space these items have been around for decades.... my watch is solid Ti, my motorcycle is made up many large pieces of Ti, carbon, aluminum, mag, a ceramic aluminum sintered matrix, and some good old steel as well. i know what i'm talking about. berylium? please, how about econel? you don't know nuthin' about metals or tennis.

Perhaps you mean Inconel?  Show me a titanium camera housing, or a carbon fiber one, and we'll talk.

Jim

11
Lenses / Re: how to get 300 2.8
« on: September 17, 2014, 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

12
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.

13
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

14
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

15
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

Pages: [1] 2 3 ... 56