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Forum: Pentax Lens Articles
01-30-2012, 06:44 PM
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(Posted as a request) . If anyone can take this a step further and elaborate on the rear elements I'd be grateful!
Also note: I am using made-up names for some of the parts (front element assembly?) Any corrections will be appended to the text of the post.
Step 1: focus the lens at 4 meters (< 14 feet).
Step 2: grip the lens by the aperture ring (or mount, or anything attached to the mount, ie: a camera) and the front protective cover and twist the front protective cover clockwise until it falls down and hangs loosely.
 
Step 3: grip the focus ring and the front element assembly and twist the front element assembly counter-clockwise until it disengages.
Step 4: remove the lens hood from the front protective cover and set aside.
Step 5: attach the front element assembly securely to the lens by turning it clockwise
Step 6: attach the front protective cover to the front element assembly by pressing it up and turning it counterclockwise.
(I could swear I took a picture of this...)
Step 7: continue turning the front protective cover counterclockwise until the front half of the lens disengages from the back half and set the back half aside.
Step 8: remove the front element assembly from the front protective cover by turning counter clockwise.
Step 9: twist the front element assembly apart by rotating the front element counter clockwise.
In this state of disassembly you can clean most of the lens surfaces and the aperture blades.
I think that's it for the easy stuff. Pretty sure the rest requires unscrewing tiny little screws on the mount but I haven't gone that far yet.
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Forum: Pentax News and Rumors
02-13-2012, 05:54 PM
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Well, I made the following image in photoshop so... Here's your disclaimer!
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Forum: Pentax Q
06-25-2011, 01:00 PM
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Q=Queen, if you don't want to read up on the history of the K(ing) mount you can just look at the ad on pentaximaging.com. what card do you see the Q hiding behind? :p
Also: +1 on the pickup line!
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Forum: Pentax News and Rumors
09-23-2012, 01:16 PM
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Can someone re-host the new map for those of us on facebook-prohibited networks?
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Forum: Pentax News and Rumors
08-07-2012, 06:58 PM
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won't = would not[/quote]
Wouldn't ?[/quote]
yep.. [/quote]
wouldn't = would not
won't = will not
wouldn't ≠ won't
Just clearing that up.
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Forum: Pentax News and Rumors
07-31-2012, 09:09 PM
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Pentax News, Rumors, and Speculation: where everything's made up and the posts don't matter!
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Forum: Pentax News and Rumors
06-11-2012, 09:01 AM
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The lens protrudes > 40mm into the body? I wonder what the rear cap on this lens is going to look like. Maybe I can use it as a shot glass when the lens is mounted!
:lol:
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Forum: Weekly Photo Challenges
05-29-2012, 10:35 AM
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Starter:
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Forum: Weekly Photo Challenges
05-22-2012, 09:16 AM
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Forum: Pentax Full Frame
05-08-2012, 01:50 PM
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- Some people want FF, some people find it pointless.
- When asked about FF Pentax reps smile and/or laugh.
- Innummerable rumors
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Forum: Mini-Challenges, Games, and Photo Stories
04-29-2011, 11:51 AM
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People on flickr just love butterflies, This picture gets about 1/5th of my total views
(click image for full size) |
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Forum: Pentax Full Frame
02-22-2012, 04:01 PM
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My two sources: (Falclumo and Ricehigh) listed it as usable so that's what I was going off of. I do not have a 55-300 to test myself.
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Forum: Pentax Full Frame
02-21-2012, 11:34 PM
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You sparked my interest and I figured I'd elaborate on this. The following lenses are currently available new, directly from the manufacturer, for Full Frame Pentax K mount.
Pentax: (some lenses are only sold in japan, check this site for more)
DA* 55 1.4
DA* 200 2.8
DA* 300 4
DA 35mm 2.4
DA 40mm 2.8 Limited
DA 70 2.4 Limited
DA 55-300 4-5.8
D FA Macro 100mm 2.8
D FA Macro 50mm 2.8
FA 31mm 1.9 Limited
FA 35mm 2
FA 43mm 1.9 Limited
FA 50mm 1.4
FA 77mm 1.8 Limited
FA J 28-80mm F3.5-5.6
FA J 75-300mm F4.5-5.8
Tamron:
28-75mm 2.8
70-200mm 2.8
90mm 2.8 Macro
28-200mm 3.8-5.6
70-300mm 4-5.6
Sigma:
15mm 2.8 Fisheye
20mm 1.8
24mm 1.8
28mm 1.8
50mm 1.4
85mm 1.4
300mm 2.8
500mm 4.5
50mm 2.8 Macro
70mm 2.8 Macro
105mm 2.8 Macro
24-70mm 2.8
70-200mm 2.8
100-300mm 4
12-24mm 4.5-5.6
28-300mm 3.5-6.3
50-500mm 4.5-6.3
70-300mm 4-5.6
120-400mm 4.5-5.6
150-500mm 5-6.3
Vivitar/Samyang/Bower:
13mm 2.8
35mm 1.4
85mm 1.4
Zeiss:
Distagon T* 21mm 2.8
Distagon T* 25mm 2.8
Distagon T* 28mm 2
Distagon T* 35mm 2
Planar T* 50mm 1.4
Planar T* 85mm 1.4
Makro-Planar T* 50mm 2
Makro-Planar T* 100mm 2
Gee, I wonder if that's enough? (rectilinear primes at: 13, 20, 21, 24, 25, 28, 31, 35, 40, 43, 50, 55, 70, 77, 85, 100, 105, 200, 300, 500)
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Forum: Monthly Photo Contests
01-29-2012, 12:21 PM
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Forum: Pentax News and Rumors
01-31-2012, 08:43 PM
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So..... Is it this?
Not K, but everything else fits the bill... sort of?
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Forum: Weekly Photo Challenges
12-16-2011, 03:48 PM
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Forum: Weekly Photo Challenges
12-08-2011, 10:52 AM
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Forum: Monthly Photo Contests
07-23-2011, 02:53 PM
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Forum: Monthly Photo Contests
07-05-2011, 11:45 AM
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It just sounded to me like he was simply expressing his disinterest in the multitude of child photos he's seen over the years. Much in the same way I would not be fond of the same meal, even if it was my favorite, if served every day for a month.
FWIW: it did not sound like he was directing it at you, and he certainly did not sound offended, merely tired.
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Forum: Sold Items
06-18-2011, 12:03 PM
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Forum: Pentax K-5 & K-5 II
06-24-2011, 08:47 PM
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I completely missed the banding at first, I was looking for something more readily-apparent like what you get when you push shadows in a 7D photo!
If your photo software has a separate slider for reducing color (chroma) noise just use that to get rid of the offending banding. The way we see is much less sensitive to fine differences in color than to differences in luminosity; those extra bits of color won't even be missed! |
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Forum: Weekly Photo Challenges
06-17-2011, 11:54 AM
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The moon is only going to be a few degrees off of the horizon this week for me, and that means I won't be able to see it behind the mountains, I'll have to enter an older photo this week!
(click to view photo large on flickr) |
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Forum: Pentax SLR Lens Discussion
05-25-2011, 11:29 AM
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Could this be the work of the A - 35-105/3.5 ?
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Forum: Pentax SLR Lens Discussion
05-02-2011, 11:42 PM
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The DA 18-135 will set you back about $500
The limited trio will run you $750 + $785 + $1000 = $2535
Given your choice of camera (Kx) I am going to make the assumption that you would be better served price-wise, and be more than happy performance-wise, with the DA 18-135.
Of course, should you choose to not limit yourself to the fabled three and instead choose more modest, manual focus takumars, K series, or other older, less appreciated, lenses I'm sure you could put together a more than satisfactory assortment of primes for that same amount. Just ask RioRico, I think you could add up the cost of the "cheap" half of his collection and it wouldn't cost as much as the 18-135...
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Forum: Pentax SLR Lens Discussion
04-30-2011, 08:45 PM
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This is what an A 50 f/1.2 looks like:
(click picture for larger sizes) |
