Messages

31

Lenses / Re: Do you wish your 70-200L were black?

« on: May 22, 2013, 05:10:29 PM »

I started with Nikon and when I switched to Canon I missed the black lens.  White lens show wear faster - plus stand out too easily.  If I had a choice, I would pick black over white

32

EOS Bodies / Re: Patent: Canon Foveon Sensor

« on: May 22, 2013, 05:02:31 PM »

Interesting .. wonder how Canon plans to incorporate this into their product line.

Will they start at the top or place it in a middle level camera?

Years ago introduced technology on a one off basis.  For example eye control went no where, DO has stalled but may eventually go somewhere.  Recently Canon seems to have upped their game regarding quality.  Wonder how they will position a Foveon - type sensor.

33

EOS-M / Re: EOS M Announcement in the Summer? [CR2]

« on: May 16, 2013, 05:23:57 PM »

to be successful, need good (if not great AF) and an adaptor (already have this, but needs to continue to work) for EOS EF and EF-S lenses.

34

Lenses / Re: When is the New 100-400 Coming?

« on: May 16, 2013, 05:20:50 PM »

If they wait for sales on the 200-400 it could be 6 months before the initial rush is over. 

May use the demand to determine price - if there is resistant to the 200-400 they may price the 100-400 higher since they will think everyone is waiting for a lower priced alternative.  If 200-400 sales are strong, then they go with a lower price since they have already milked the market.

Wait and wait and wait and eventually see - maybe

35

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:14:41 AM »

None of the options apply to me so I cannot vote ... I'm saving for the 600mm f/4 II. Based on my usage, I don't see where this lens fits my requirements.

see no use for it .. I listed examples of other lens that may be of interest to you.

36

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:13:08 AM »

Where's the option "i want one but by doing so my wife would kill me, hire a hit man, or divorce me" option?

just added it

37

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:11:56 AM »

I had the chance to play a little with the lens.

I don´t want a build in TC and I don´t want such a heavy lens for travelling. I am happy with my big white telephotos.

A EF 100-400 L IS replacement for travelling is what I want and what I need.

Nice if Canon would make a 100-400 fixed 4.5 without built in for around $6,000.

38

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:09:21 AM »

Too expensive, too heavy, too short. But then I am not a pro so its just an amateur's opinion.

Still, the 500mm f/4 IS II is very tempting even for an amateur...     

Me, too.  Amateurs "want" and "lust", pros justify with ROI.  More fun to be an amateur I can buy want I can afford without justifying that it makes business sense.   

39

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:07:08 AM »

I will and I will concurrently have to file for divorce. Which I guess means my (ex) wife will own half the lens. I wonder which half she wants?

why not get a chain saw, and cut it half, lengthwise 

40

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:05:46 AM »

stupid  poll.   why isn't there an option that says,  I'd rather buy a used car.

well if you want a car, then perhaps this is not the forum for you Or would you rather have a 14-24 or some other lens (and there is an option for that one)

 

41

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 16, 2013, 02:03:25 AM »

I think there should be another option: I'd get it but I want to stay married...

Good point, I missed that option.  I'll add it to the list.

42

Lenses / Re: Who has pre-ordered or will order 200-400

« on: May 15, 2013, 01:05:52 PM »

I ordered two.  Always good to have backups.

why not 3 - double backup?

43

Lenses / Who has pre-ordered or will order 200-400

« on: May 14, 2013, 03:17:24 PM »

just wonder if many people will jump on this opportunity.

Grant it is a lot of $ but then again we have had ample warning this day would arrive.

I put myself in line last night, not sure I won't cancel my pre-order (or perhaps I can sell my place in line)

44

Lenses / Re: EF 200-400 f/4L IS 1.4x Announcement Tonight

« on: May 14, 2013, 03:10:34 PM »

Shoot, if I had $12K, I'd get it.

Hell if I had $6K, I'd get an old 400mm Prime f/2.8.

Is it too soon to speculate on a 200-400 f/2.8 with 1.4x?  How expensive and how heavy would that lens be?

    

Basically everytime you add a stop, you increase the size of glass by 4.  So rather than 8 lbs, 32 lbs.

45

Lenses / Re: AFMA Accuracy vs. Precision

« on: May 14, 2013, 03:04:41 PM »

Hello Everyone,

Just wanted to pose a question to those with sufficient experience AFMA testing and adjusting several lenses and bodies.  Specifically, I want to discuss Accuracy (how 'spot-on' focus is relative to a target) and Precision (the repeat-ability of focus).

Ref: http://www.the-digital-picture.com/Photography-Tips/AF-Microadjustment-Tips.aspx

I have found that more often than not, zero AFMA adjustment on a body for a given lens yields more precision (repeatable results) even if the depth of focus is "off" (front or back) rather than once you adjust the AFMA in either direction, even by +/- 1.  This is why I am starting to believe factory calibration of body to lens is better than AFMA tweaks.

Sometimes, but less frequently, higher precision (repeat-ability) is found on an AFMA setting other than zero, but it isn't always the "best" AFMA offset in terms of image accuracy/sharpness.

I believe this is why the FoCal AFMA testing application has a AF Consistency test, which allows you to test various AFMA values in a repeatable fashion, to seek-out the best AFMA setting with the most repeatable results.

Have any of you found the same to be true?  That sometimes you may want to trade accuracy for better precision (repeat-ability).

Thanks

Good discussion.  I have not yet tried to AFMA my cameras but I agree I want the best setting to get the maximally sharp pictures all the time.