Forgot Password
Pentax Camera Forums Home
 

Showing results 1 to 25 of 108 Search:
Forum: Photographic Industry and Professionals 09-30-2020, 07:54 PM  
Will this mean even less third party lenses for Pentax?
Posted By sjwoodworth
Replies: 27
Views: 1,648
I chose the Zeiss ZK Distagon 35mm f/2 and the Irix 150mm f/2.8 macro over Pentax OEM choices, and not exactly for cost. It’s nice to have choices and of course it hurts when other brands abandon the mount.
Forum: Monthly Photo Contests 08-11-2020, 09:05 AM  
The Sun
Posted By sjwoodworth
Replies: 3
Views: 50
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 09:04 AM  
To the sun and back
Posted By sjwoodworth
Replies: 8
Views: 129
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 09:03 AM  
Sunset flight
Posted By sjwoodworth
Replies: 11
Views: 110
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:59 AM  
Sunset - Tantalus Range
Posted By sjwoodworth
Replies: 4
Views: 67
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:58 AM  
Sunset
Posted By sjwoodworth
Replies: 6
Views: 135
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:57 AM  
sunset
Posted By sjwoodworth
Replies: 37
Views: 338
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:56 AM  
anza beach
Posted By sjwoodworth
Replies: 5
Views: 74
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:55 AM  
Sunset
Posted By sjwoodworth
Replies: 5
Views: 142
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:54 AM  
Red Sky at Night
Posted By sjwoodworth
Replies: 9
Views: 87
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:53 AM  
Telescopic sunset
Posted By sjwoodworth
Replies: 49
Views: 461
I would like to nominate this photo
Forum: Monthly Photo Contests 08-11-2020, 08:53 AM  
North Animas Valley
Posted By sjwoodworth
Replies: 3
Views: 59
I would like to nominate this photo
Forum: Troubleshooting and Beginner Help 07-15-2020, 12:25 PM  
Help opening up a 77 ltd
Posted By sjwoodworth
Replies: 8
Views: 680
hmm, I hope not! Speaking against fungus is the pattern of distribution of the foreign materials --- there are only disconnected specks on the lens, though I agree way too many of them for my liking---, and the fact that I really can't see anything without the help of the flashlight, at exactly the right incidence. Argh, I do wish I had this problem with a lens less dear to me!
Forum: Troubleshooting and Beginner Help 07-15-2020, 07:55 AM  
Help opening up a 77 ltd
Posted By sjwoodworth
Replies: 8
Views: 680
Thanks for this, aslyfox. I was thinking my dust probably qualifies as a coating that reduces transmission and contrast... the amount is definitely pronounced compared to my other lenses. That, coupled with the fact that I think it’s at the easiest place to reach, and I wouldn’t try to clean other elements, has me leaning toward going for it. But will definitely take this into consideration!

---------- Post added 07-15-20 at 08:01 AM ----------

By the way, here’s the amount. Would be interested to hear if you still think the same.



Forum: Troubleshooting and Beginner Help 07-14-2020, 07:56 PM  
Help opening up a 77 ltd
Posted By sjwoodworth
Replies: 8
Views: 680
Thank you both for these helpful resources!
Forum: Troubleshooting and Beginner Help 07-14-2020, 06:11 PM  
Help opening up a 77 ltd
Posted By sjwoodworth
Replies: 8
Views: 680
Hi all,

I'm planning to open up my FA 77 ltd so that I can clean up a significant amount of dust from the back of the front element/first group (for more on this see here).

I'm wondering whether anyone knows if these Japan Hobby Tool Vacuum Pads will do the trick in getting the lens front ring off. 45mm is the closest size to the 49mm filter thread. It looks to me like 45mm should be sufficient, but I'm not sure with the concave of the lens, so I'm hoping someone will have experience, or at least a more educated guess than mine. If not, perhaps this, at 48mm, is another option?

Otherwise I guess a last resort is a spanner, but without having practiced with one before I'm a bit nervous about using it on the 77, which doesn't leave much room to wiggle between the ring and lens!

Once I get the front ring off, I'm just expecting to see a few JIS screws, to get the filter thread off and gain access to the front element group. I shouldn't need to go deeper than that, and I wouldn't want to. I really want to avoid any flying springs.

Can anyone confirm whether my plan is sound? Unfortunately I couldn't find a video of the 77mm being disassembled from the front.

Thanks so much in advance!
Forum: Troubleshooting and Beginner Help 07-13-2020, 05:36 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
Thanks for the video, maw! Actually I have been mulling it over. Most of the dust is deposited behind the front element though... I'm not so sure I'd want to disassemble it that far... I see too that there is a camera repair shop not far from me... hard to get in touch with so far with the shelter-in-place orders, but am hoping to get through soon.

---------- Post added 07-13-20 at 05:49 PM ----------

Though looks like I can just go in through the front of the lens, so long as I get the right tools...
















Youtu.be



Forum: Troubleshooting and Beginner Help 07-12-2020, 07:09 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
You're probably right, maw, that I should have had a better look at it on arrival! I actually got it just as I started having some eye issues that took a string of surgeries to resolve, so it hasn't gotten nearly enough use. Though my experience with it has for the images I have captured been overwhelmingly positive... as Hans is saying was the case for him, I don't feel I've run up against IQ problems.

Still, you aren't wrong to be worried: with a very bright light reflecting the right way though I do believe contrast would be severely affected.. managed to hit this angle... not quite perpendicular to the optical path, when the dust becomes much harder to see, but not too far off either...

Forum: Troubleshooting and Beginner Help 07-12-2020, 04:53 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
Looking back at the order it was actually through Adorama on Amazon, listed as a demo copy, used - like new. This was a couple years ago at this point though. Without the help of the flashlight the glass looks flawless to me and always has. So it's just the flashlight test which I did for the first time today that has revealed the (hopefully) dust.

I'm sure I could have sent it back at the time, had I noticed (if it's dust I imagine it hasn't gotten much worse with me, since I have been fairly vigilant keeping it in a case).. Adorama is great for returns.. though honestly I don't think I would have at the price I paid. To regret the purchase someone would have to come forward to convince me I've got a very big problem my hands :D
Forum: Troubleshooting and Beginner Help 07-12-2020, 04:06 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
Will do! I doubt i'll ship it unless it gets worse, or I notice some problem with image quality. But next chance i get to take it into a camera store I will, and will report back :)
Forum: Troubleshooting and Beginner Help 07-12-2020, 03:51 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
ahh ok, ho capito. grazie mille!!
Forum: Troubleshooting and Beginner Help 07-12-2020, 02:52 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
Hi Maw: Just to make sure I'm understanding, is your thought that there was mold, and it was cleaned, but in such a way that left a ton of dust (and possibly the mold left some inner etching?) Or is the thought that the lens might have mold now? I don't see any sign of typical mold growth patterns --- just many unconnected flecks.

And thanks for weighing in, Haris. I wouldn't describe what I see as a blue/grey foggy layer; just a surprising number of point size obstructions (the flecks). Picture #2 is the best image I have of it at it's worst: torch at an angle to the lens from below, and the lens too is angled away from me. Think I'm with you that this isn't going to be worth a CLA, at least for the time being!
Forum: Troubleshooting and Beginner Help 07-12-2020, 01:30 PM  
dust or haze?
Posted By sjwoodworth
Replies: 16
Views: 801
Hi all,

I recently moved to a more humid environment so am setting up a dry box. I took the opportunity to shine a flashlight through all my lens for the first time and I discovered this lurking in my 77 ltd, purchased used through Amazon a while back. It looks to me like it's primarily on the back of the front element. I'm wondering if anyone has any guesses as to whether it's just a heavy dose of dust, or whether it's rather haze. I'd also be curious to hear any views as to how much it might be affecting image IQ and whether it's worth trying to get serviced. I haven't noticed anything in my images myself.







(I hope the run and gun iPhone photos are sufficient for a diagnosis... if not let me know and I'll get set up to do a proper photo!)
Forum: General Photography 07-11-2020, 12:35 PM  
Taschen sale photography books
Posted By sjwoodworth
Replies: 3
Views: 624
Thanks for posting! I've now got Genesis on the way, along with a collection of Edward Weston :)
Forum: General Photography 07-11-2020, 12:14 PM  
eBay purchases from JAPAN
Posted By sjwoodworth
Replies: 32
Views: 1,371
I had a great experience with mapcamera out of Japan last week: I ordered a lens Sunday night and it arrived in California (through a hub in Cincinnati) Tuesday afternoon. Everything as described, used with very light scratches on the lens itself but the glass is flawless and in perfect working condition, as far as I can tell. There were no import duties, but this will depend on where you're purchasing from.
Search took 0.01 seconds | Showing results 1 to 25 of 108

 
Forum Jump


All times are GMT -7. The time now is 10:31 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top