RE: lens of the week: 2000/13.5 and M 2000/13.5

2001-04-19 Thread O'Neill, William


Pl said:
If you can focus it! I had troubles with the 1000/11. Try to stop down any lens to 
F:11 and try focusing it. A 2000mm will be 10 times worse; remeber the focusing 
accuracy involved. Its pretty much hopeless in my experience. Focusing bracketing is 
mandatory.

I say:
Yes, but Pl, in the domestic spy business, all you need to do is be able to recognize 
the guy/gal cavorting with the other guy/gal.  Wall hanging quality isn't such an 
issue for most of the clients.
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RE: to PZ1-P experts. About TTL Flash

2001-04-17 Thread O'Neill, William

Alex,

Question:
1. Is the TTL flash metering region the same as the light metering? Let me explain: if 
I set the exposure metering to multi-segment, will the TTL flash use the same metering 
mode to decide the flash exposure or will it use only spot, or something else?

Answer:
It is not the same.  It uses an OTF sensor that provides a centre-weighted reading.  
This reading is not the same as the centre-weighted reading for normal exposure either.


Question:
2. If I set PF-7 to program the IF button to set the exposure to the background, which 
metering mode will it use? Let me explain again: I set the metering exposure to spot 
and I pop up the flash but I would like to have the proper exposure for background. 
So, as I set PF-7 to do that, I press IF button. What happens? Does it shift to 
multi-segment to have the proper exposure for background or does it use the spot 
metering I choose for correction without change the flash configuration or 
something else

Answer:
This is just my hypothesis and you will have to check it out...Since the flash 
exposure is calculated real-time using a different sensor, it cannot be used to 
determine the ambient background exposure.  Likewise, the multi-segment (ambient) 
meter cannot measure background lighting if it is in spot mode, so for things to be 
consistent the multi-segment meter will have to switch into multi-segment mode to 
determine the background exposure when you press the IF button.  However, check it out.


Question:
3. I am using fill flash. So, I set the exposure for background and I would like to 
program de flash to fill a subject that is not in the centre spot. How can I do that 
without change the exposure for the background Is it possible with the camera 
metering only? 

Answer:
Since the ambient and flash exposure are handled in the PZ1-p by two completely 
separate systems.  In this particular case, if I were using slide film I would set the 
ambient exposure compensation to -0.5 and the flash exposure compensation to about -1 
and bracket a bit on the flash compensation.  For print film I would not bother to 
bracket as a little over exposure will do not harm.

Bill O'Neill


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RE: Incredible Pentax Spotmatic Knock-off available on eBay

2001-04-17 Thread O'Neill, William

I too have one of these Yashica 'Electro 35' cameras.  Not an awfully bad camera.  I 
got mine for about $3 US at a garage sale.  However, it is no Spotmatic work-alike, 
look-alike, or anything-else-alike.  The lens is fixed, there is no depth of field 
preview and (of course) no mirror to lock up.  There is also no meter to look at, nor 
is there a battery check feature.  The battery, now there is another problem.  It 
takes a 5.6 volt Mercury cell.  Not all that easy to find these days.

Bill O'Neill
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