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09-08-2012, 09:12 AM   #1
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FA 50mm f/1.4 or DA 50mm f1.8?

i was planning on buying the 50mm f/1.4 but i don't have too much money and i noticed that the f/1.8 is a hundred dollars cheaper
Is the difference between the two worth the 100 dollars?
comparison between the two in bokeh and low light situations?
I've only used the 18-55mm before and my camera is k-r

09-08-2012, 09:26 AM   #2
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Check the comparison shootout done in this forum. Lots of info and samples.

Pentax 50mm Prime Lens Shootout - Introduction -

09-08-2012, 10:40 AM   #3
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No aperture ring will limit some of your opportunities to accessorize, such as buying cheap extension tubes for close up work for example .

That being said, had I not already acquired a FA 50/1.4, I likely would purchase a DA 50/1.8 - the difference in max aperture opening is more than made up in the light weight, and 52mm filter thread (same as the kit lens 18-55).

Besides, FA 50 1.4 gets pretty soft wide open, and is a real bugger to nail focus with my stock Kr.
09-09-2012, 01:54 AM - 1 Like   #4
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In my opinion - the FA501.4 is better closed down to F2.0, the new one is a little better wide open. Both will do the job if you are not pixel peeper, if you are - go for second hand FA501.4, it is the better lens I think. And you must buy a good hood too! In low light the better choice is M 50 1.7, it is sharper than DA501.8 and FA501.4 with better contrast and almost none CAs and if this is not enough to convince you - try using the FA501.4 in real low light conditions - the AF is awful even with K-r.

A good companion to the FA501.4/DA501.8 will be one MF 50 1.7 for example M 50 1.7 or something exotic like Zenitar-M or Auto Chinon they are opticaly better than the FA50 and DA50 wide open and being MF lenses are good for macro job.

Zenitar-М 50 1.7 + extension tubes - isn't it great, it has such soft OOF render and no CAs with sharp details in focus. 100% sure that M 50 1.7 or FA 50 1.4 can't do that, the 50 1.4 has CAs.

And some with M 50 1.7

09-16-2012, 01:22 AM   #5
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i will choice FA 50/1,4... 1,4 is 1,4 and have aperature ring... use step down ring (f.e. 49-30 as hood) and it will be perfect... i think it have same optics as older A50/1,4, that i own

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