Pentax lens


Mar 20, 2011
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Ang Mo Kio
#1
Can anyone tell me pentax lens which is the sharpest ? And which pentax lens is the best to make background blur ?
 

fengwei

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#2
It's hard to say which lens is the sharpest. But from photodo tests, the F50/2.8 macro got the highest MTF among all Pentax lenses tested there.

As to make background blury, it depends on the subject distance, background distance, focal length and aperture used. In general to shoot a closer distance target with a longer focal lens would give your blurier background. Normally a 50mm or longer focal length would be good enough to isolate background from the main subject if it's within 1 to 1.5m distance.
 

pinholecam

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Jul 23, 2007
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#3
This would be a bad way to approach lens selection and understanding. :)
Not to mention that every one has their own preference/poison and you'd end up with too many choices and suggestions.

I suggest you do some read up on the basics of photography (eg. shutter speed, ISO, aperture )
YouTube also has a good resource "Photography one on one" from Adorama, so don't even need to read :D

Fengwei gave some good advice above on how to get less depth of field to make the background blur.


To me most of the Pentax primes (old and new) are generally sharp (or rather sharp enough). No need to be sharpest.
All the DA* lenses are sharp as well.
I've only encountered really not so sharp lenses with a Sigma super zoom and a couple of odd ball no name old lenses (maybe they were just bad copies :think:)
 

Last edited:

creampuff

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Jul 11, 2006
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#4

edutilos-

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#5
lionel lim said:
Can anyone tell me pentax lens which is the sharpest ? And which pentax lens is the best to make background blur ?
That's a very weird question. If I want to shoot a wide view and you give me a very sharp 200mm lens, I will stitch 400 images together to get 10mm FOV??

You should be comparing within comparable focal lengths..

For second question, same applies. Without a context it is hard to advise.
 

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