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Forum: Pentax SLR Lens Discussion 09-20-2018, 12:22 PM  
HD Pentax-DA 55-300mm F4.5-6.3 ED PLM WR RE - Show us what it can do, what it CAN'T!
Posted By azath
Replies: 1,500
Views: 158,624
it can !
Quite good image quality for a budget lens, and good handling.
Forum: Pentax SLR Lens Discussion 09-02-2018, 02:44 PM  
A lens gets stuck forever on your brand new K-1...
Posted By azath
Replies: 43
Views: 2,410
Waiting for the postman to bring me my just acquired K-1 II + 28-105!
Happy to read so many of you enjoying this kit.
Forum: Pentax K-1 & K-1 II 09-01-2018, 03:14 PM  
K-1 II just ordered! and a few questions
Posted By azath
Replies: 13
Views: 1,092
4800x3200 is very 3:2 to me ! ;)
Forum: Pentax SLR Lens Discussion 08-26-2018, 02:40 PM  
What's your favourite vintage / film-era manual focus lens, and why?
Posted By azath
Replies: 147
Views: 15,269
The M 50/1.4 !
Cheap, great M handling, vintage rendition and wonderful bokeh.
Forum: Pentax SLR Lens Discussion 07-12-2017, 11:15 AM  
DA* 60-250 F4 : autofocus failure, twice.
Posted By azath
Replies: 15
Views: 3,598
Hello,

Reviving this thread as I now know more.
After 2 copies sent back under warranty, I had my third copy and... boom, happened again recently. Autofocus stuck.
Which lead to asking myself what the hell am I doing wrong : it always happened while zooming back (say from ~200mm to ~80mm) somehow quickly, and autofocusing at the same time threw AF-AEL button. Nothing dramatic on this point...

Then I saw the light (yes, it took time :/), that it might me originating from my K3II, or the from connection between the DSLR and the telezoom.
So I switched AF->M on the DSLR and manual focus was indeed working without a flaw. I forgot now if this had been the case with my former copies... but I feel really stupid not having tried that if this was the case !
Switch again M->AF and was working again.
Happened a couple of times again since, and I just switched AF->M, manually turn the focus ring, and M->AF : it solved it.

I tried to have a look on the connection since, cleaned it, nothing seems wrong with it, and after a few days of extensive use I didn't have the problem again.

So in the end, it just seems to be a gentle connecting problem / maybe the K3II AF/M switch.
I've never had this happen with any other lens than my 60-250 tho. It's also the one I use extensively...

I hope this experience can bring light to someone having this problem !
Forum: Pentax SLR Lens Discussion 08-08-2016, 12:20 PM  
DA* 60-250 F4 : autofocus failure, twice.
Posted By azath
Replies: 15
Views: 3,598
Frustrating is a better word then. And agreed about the excellence of this lens which I always considered my best lens and always been happy with until this. That thread, as reh321 said, at least indicates that it does not seem to be a common problem so that is a good point.


Yes as I said before, I needed immediate solution and that was my quick choice, that the 55-300 will become my second choice telezoom lense (with other pros than IQ). Now I'll take some time to consider the options for the next first choice FF telezoom, basically : 150-450, 70-200, 60-250, or even Canon. It was the opportunity to reconsider. But I do not exclude that lens from possibilities because I really enjoyed it.
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