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05-19-2009, 08:55 AM   #1
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Pentax FAJ 75-300 vs DA 55-300

have you info about Pentax FAJ 75-300 vs Pentax DA 55-300?

Pentax FAJ 75-300 is similar to DA 50-200 or better?

05-19-2009, 09:09 AM   #2
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QuoteOriginally posted by gemini Quote
have you info about Pentax FAJ 75-300 vs Pentax DA 55-300?

Pentax FAJ 75-300 is similar to DA 50-200 or better?
I have access to both the FA J and DA 55-300. They're not with me at the moment though. Give me a week or two and I'll post some crops.

Note that the FA J has a rotating front element, which is bad if you want to use a circular polarizer.
05-19-2009, 09:12 AM   #3
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QuoteOriginally posted by asdf Quote
I have access to both the FA J and DA 55-300. They're not with me at the moment though. Give me a week or two and I'll post some crops.

Note that the FA J has a rotating front element, which is bad if you want to use a circular polarizer.
thanks asdf (nice nickname!)

if you tell me more info about sharpness i will be happy!

about AF:
FA J is fast? better then DA 55-300?
05-19-2009, 09:19 AM   #4
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QuoteOriginally posted by gemini Quote
thanks asdf (nice nickname!)

if you tell me more info about sharpness i will be happy!

about AF:
FA J is fast? better then DA 55-300?
They've been used on different bodies, so I don't know. I'll comment once I compare them side by side on K20D. Right now, they're in two different cities being used by other Pentaxians.

05-19-2009, 03:42 PM   #5
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I have the FAJ 75-300, and my comment would be that it's somewhat soft at the long end on my K100D Super. It's special value is that it's the cheapest Pentax lens you can buy that goes all the way to 300mm. But at only half the cost of a 55-300 you shouldn't expect it to be it's equal.
05-19-2009, 11:02 PM   #6
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QuoteOriginally posted by asdf Quote
Note that the FA J has a rotating front element, which is bad if you want to use a circular polarizer.
Considering that you loose 1.5-2 stops with a circ polarizer, and the lens is f5.6, it is bad enough already, you don't need to worry about the rotating front element.
07-03-2009, 10:12 PM   #7
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QuoteOriginally posted by gemini Quote
have you info about Pentax FAJ 75-300 vs Pentax DA 55-300?

Pentax FAJ 75-300 is similar to DA 50-200 or better?
Here's a video of DA 55-300 on K20D:

YouTube - Pentax K20D + DA 55-300 Autofocus

Here's my video of FA J 75-300 on a k-m:

YouTube - Pentax k-m vs FA J 75-300
07-04-2009, 04:03 AM   #8
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I had the FAJ 75-300. It was the first lens I sold. I shed no tears upon its departure.

07-04-2009, 09:01 AM   #9
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Given the less than stellar optical performance of the FAJ lenses, is it any wonder if the FAJ equates to FA Junk
07-04-2009, 10:27 AM   #10
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QuoteOriginally posted by asdf Quote
Here's a video of DA 55-300 on K20D:

YouTube - Pentax K20D + DA 55-300 Autofocus

Here's my video of FA J 75-300 on a k-m:

YouTube - Pentax k-m vs FA J 75-300
very thanks!

very kind!

07-06-2009, 01:38 AM   #11
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I ... surprisingly have kept my FA-J 75-300mm lens ... as I think i got one of the rare good ones.

I hardly use it though ... but if I am going somewhere that I don't want to take my better lenses ... it comes along with me.

Just don't use a teleconverter with it ... or if you do ... make sure it is a bright sunny day.
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