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07-28-2013, 07:40 AM   #16
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By "screw covers" you mean the covers for the film transport and film rewind? Just to be sure, when these are removed to install the winder, they are screwed into the top of the winder - on either side of the name Winder LX, for storage. Hopefully they are still there?


Last edited by LesDMess; 07-28-2013 at 08:02 AM.
07-28-2013, 12:04 PM   #17
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I suppose that a skilled machinist with a metal lathe could make replacement covers, but at what cost? Its possible that the LX shares these covers with other Pentax cameras, but I don't know for certain. If you attach a winder no covers are needed of course, but without a winder attached and without the covers there is a good possibility of light fogging the film through the left port, and dirt and grit entering the camera through the right port. Neither good things! You could cover them with a bit of opaque tape, or opaque "stuff" held on with perhaps rubber cement.

Re: the AF400T flash, the accessory shoe cord is fine if it has contacts matching the LX's accessory shoe. It's certainly much faster to attach than the cord for the LX's body contacts. BTW, watch for the external battery pack for the AF400T; that flash eats AA cells at an alarming rate!
07-28-2013, 01:01 PM   #18
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LesDMess - you are absolutely right - they are there! Thanks for pointing it out!
grhazelton - thank you for an information regarding AF400 - I will check its appetite tomorrow Btw, nice disclaimer in your post, hope I may quote it?
07-28-2013, 01:38 PM   #19
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BTW, this site Welcome to Bojidar Dimitrov's Pentax K-Mount Page covers the entire Pentax SLR and DSLR product line very completely. This site http://www.mir.com.my/rb/photography/hardwares/classics/pentaxlx/ if it is still valid is an excellent survey of the LX and its major competitors.

07-28-2013, 08:23 PM   #20
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QuoteOriginally posted by konradsiekierski Quote
LesDMess - you are absolutely right - they are there! Thanks for pointing it out!
grhazelton - thank you for an information regarding AF400 - I will check its appetite tomorrow Btw, nice disclaimer in your post, hope I may quote it?
Re the disclaimer: Be my guest!
07-31-2013, 03:30 PM   #21
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Thank you, I appreciate your generosity Coming back to AF400 - do you know in which modes should I use it with K-5 so that they will "speak" with one another?
07-31-2013, 10:06 PM   #22
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QuoteOriginally posted by konradsiekierski Quote
Thank you, I appreciate your generosity Coming back to AF400 - do you know in which modes should I use it with K-5 so that they will "speak" with one another?
Sadly with the K5 it can only be used in manual mode, or via the sensor built into the AF400's handle. You will have to select "X" and the ISO on the K5, set on the calculator on the AF400 and then use one of the switchable f stops available for that ISO as noted on the AF400. The AF400 is a TTL flash; with the LX, 645n, etc it will read the light reflected off the film, but it will not operate in PTTL mode with Pentax DSLRs. Once again, Mike Butkus comes to the rescue: Pentax Flashes, AF280t, af200s, af200t, Pentax AF220T, af160, AF330FTZ, pentax AF 360 FGZ, Pentax AF 400T, Pentax AF 500 FTZ instruction manual, Pentax flash instruction manual, user manual, free PFD camera manuals. Be careful with the power of the AF400, legend has it that it can blister paint at close range...
08-08-2013, 11:23 PM   #23
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Eh, still no time to play with it.... But one more issue came to my mind - how can I check if camera's mirror is working with a proper/indicated/selected speed...? Thanks!!

08-09-2013, 01:12 PM   #24
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QuoteOriginally posted by konradsiekierski Quote
Eh, still no time to play with it.... But one more issue came to my mind - how can I check if camera's mirror is working with a proper/indicated/selected speed...? Thanks!!
I'm afraid I don't understand the question. If the shutter completes its cycle the mirror is working properly, and of course its return is indicated by the return of the image in the viewfinder. If the mirror "hangs" then the shutter won't/can't close.
08-09-2013, 10:15 PM   #25
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QuoteOriginally posted by konradsiekierski Quote
how can I check if camera's mirror is working with a proper/indicated/selected speed...?
As noted above, the mirror/shutter mechanism has an interlock such that the shutter will not open unless the mirror is fully up. Likewise, the mirror will not drop until the shutter is closed. Soooo...if the shutter cycles, it is working.


Steve
08-11-2013, 11:29 AM   #26
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Thanks for your answers! So there is no chance that the mirror is working slower than it should? Let's say I am choosing 1/2000 but in fact the speed of the mirror is, for example 1/500?
08-11-2013, 12:35 PM   #27
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QuoteOriginally posted by konradsiekierski Quote
Thanks for your answers! So there is no chance that the mirror is working slower than it should? Let's say I am choosing 1/2000 but in fact the speed of the mirror is, for example 1/500?
No chance. The mirror on your camera is fairly slow. It takes about 1/15s to raise and another 1/15s to lower. Interestingly, the shutter on your LX is also pretty slow (never faster than 1/75s between leading curtain start to trailing curtain finish). Here is the sequence for shutter set at 1/2000s (assuming no time lags between phases):
  • Shutter button down time=0.0s
  • Mirror starts up time=0.0s
  • Mirror full up time=0.07s
  • Shutter starts time=0.07s
  • Shutter finishes time=0.083s
  • Mirror start down time=0.083s
  • Mirror full down time=0.153s
Total time to cycle at 1/2000s ~= 0.153s

(Number for mirror speed was pulled out of thin air. What is known is that the total time to cycle with the motor drive is under 0.2s including film transport. Also known is the x-sync speed (1/75s) which is bound by the base curtain transport speed. What is most important is showing that the shutter does not start until the mirror is up and that the timing for this action only gates shutter button latency and maximum fps.)

Steve
08-11-2013, 02:24 PM   #28
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QuoteOriginally posted by konradsiekierski Quote
Thanks for your answers! So there is no chance that the mirror is working slower than it should? Let's say I am choosing 1/2000 but in fact the speed of the mirror is, for example 1/500?
What is it that makes you think the mirror may not be working correctly?
08-11-2013, 02:55 PM   #29
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If it helps, this is a video of my LX at sync speed - http://www.fototime.com/0CED272804525B3/orig.mpg or http://www.fototime.com/0CED272804525B3/convx264.mp4
08-11-2013, 02:56 PM   #30
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QuoteOriginally posted by John Poirier Quote
What is it that makes you think the mirror may not be working correctly?
Very insightful John...


Steve
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