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Forum: Pentax SLR Lens Discussion 07-29-2018, 08:58 PM  
Comparing the FA 50/1.4 and D FA* 50/1.4
Posted By Wheatfield
Replies: 52
Views: 6,641
I hardly ever really test lenses, but as a service to this fine group, I have made an exception.
This is going to be a pretty big page, as it comprises 16 1000x1000 pixel details ranging from f/1.4 to f/16 for both lenses, as well as smaller full frame images (1024x683 pixel) at f/1.4, f/2.8, f/5.6 and f/11.
This is by no means definitive, it's just old Wheatfield setting up a tripod in his backyard and photographing some flowers.
I've arranged the pictures to make direct comparison by aperture value as easy as possible.

I hope this doesn't break the internet.
Please don't quote this post ad infinitum. It's just far too much bandwidth to take up if the files get repeated numerous times.

FA 50/1.4 @ 1.4


D FA* 50/1.4 @ 1.4


FA 50/1.4 @ 2


D FA* 50/1.4 @ 2


FA 50/1.4 @ 2.8


D FA* 50/1.4 @ 2.8



FA 50/1.4 @ 4


D FA* 50/1.4 @ 4


FA 50/1.4 @ 5.6


D FA* 50/1.4 @ 5.6


FA 50/1.4 @ 8


D FA* 50/1.4 @ 8


FA 50/1.4 @ 11


D FA* 50/1.4 @ 11



FA 50/1.4 @ 16


D FA* 50/1.4 @ 16


And the rendering comparisons. I jumped 2 f/stops for this.

FA50 @ 1.4


D FA50 @ 1.4


FA50 @ 2.8


D FA50 @ 2.8


FA50 @ 5.6


D FA50 @ 5.6



FA50 @ 11



D FA50 @ 11
Forum: Post Your Photos! 07-29-2018, 11:19 AM  
Night Andromeda Galaxy
Posted By fewayne
Replies: 26
Views: 1,254
This is the image that pretty much made me give up and buy a telescope. You don't have to look all that closely at the star shapes to see the aberrations. 19 exposures of 124 seconds each, stacked in Photoshop. And then some editing :-)

Forum: Post Your Photos! 07-29-2018, 08:43 AM  
Night Lunar Way
Posted By Nitrogliserin
Replies: 24
Views: 838
Thanks. I shot them manually and composed with using photoshop
Forum: Pentax DSLR and Camera Articles 01-04-2017, 06:54 AM  
Shutter Count
Posted By photolady95
Replies: 16
Views: 5,015
Forum: Pentax DSLR and Camera Articles 01-04-2017, 04:27 AM  
Shutter Count
Posted By kenhough
Replies: 16
Views: 5,015
Shutter count can be found very easily via 'exiftool' which is available for Windows and for Linux. I have used only the Linux version, as follows:

The command 'exiftool imgpxxxx.pef' will read a RAW/PEF file to present you with a very long list of stuff which should include a line headed "Shutter Count".

Instead of having to read through this list, use 'exiftool imgpxxxx.pef | grep "Shutter Count".

Easy!

New online tool: Check Camera Shutter Count and Manufacture Date
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