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Forum: Pentax Camera and Field Accessories 06-28-2018, 04:55 AM  
Focusing Screen or LV Aid or Tenpa 1.36 Magnifier?
Posted By Tas
Replies: 17
Views: 1,876
I'm talking about a change of system, there's no FF options in Pentax with an Electronic Viewfinder. I don't know what they're like with MF at wide apertures but it had to be mentioned as an option to consider. Lots of money to be throwing away though but if the optical viewfinder is not good enough you either change the viewfinder (again a camera system change or screen in your K-1), get better through lots and lots of practice or consider mirrorless with their new-fangled dark art electronic viewfinder.


Of course you could get boring and stop down or just go AF, but where's the challenge in that? :cool:

Tas
Forum: Pentax Camera and Field Accessories 06-28-2018, 04:05 AM  
Focusing Screen or LV Aid or Tenpa 1.36 Magnifier?
Posted By Tas
Replies: 17
Views: 1,876
Pentax in Oz are CRK, when I contacted them they indicated that it couldn't be changed, I took that as they're unlikely to accept a job where they change a component that they recommend not to change. Of course, they can't say no if you don't ask.

Somewhere around here is a comment in a thread about fogging up the bathroom to do a focusing screen change. It makes sense as the dust will be captured by the moisture though I did my K-1 on the kitchen bench. I got one piece of very annoying dust but compared to the amount of dust I managed to introduce when doing the job with my K5 I saw that as a win. Now I've done this change twice in two cameras if I was to do the swap again I'd automatically remove the standard spacer and replace it with one of the small supplied ones as in both cases I needed to open things up again to swap out the spacer. Considering it's been two from two I think that approach is a gamble well worth taking as it reduces the chances of introducing dust.



When you combine the time I've had one installed in my K5 to my recent change to the K-1 I've spent more time using the S type screen in cameras than not (4 years versus 2). I'd not noticed the darkening when fitted in the K5 though it might be that I'd just forgotten/adjusted to it. Since doing the change in the K-1 the only time I've noticed the 'darkening' issue was with the D-FA 150-450 f4.5-5.6. It was last week whilst shooting a field hockey game at night under lights. The darker screen was noticeable when compared to shooting with the D-FA* 70-200 f2.8. It didn't stop me from shooting but as the aperture range was smaller than f4 it does validate the issue of how much darker the screen can be.

Having said this though, that doesn't mean the standard screen would have been that much better and without a back to back comparison I'm not prepared to say the screen was a poor decision. Especially when you take into consideration that my K-1 lenses are all f2.8 or faster with the exception of the 150-450. So the darkening screen is not an issue unless I'm using the one slower lens I use on the K-1. And even then in the dim light of my living room tonight I tested this theory and can tell you despite being @450mm at f5.6 in the dark I had no problem seeing that the AF was locking onto the correct point.

As you MF with wide aperture I'm only going to recommend installing one as it's made an improvement for me. If you don't think it's worth the gamble then you're going to need to continue working on technique to improve the capture rate. There is another alternative that involves swapping to an EVF though I've no experience with those to know if they would be better. And a system swap is not cheap so I'm not going down that path to find out. You could however post a query in the non-Pentax section of the forums to pose that question.

Tas
Forum: Pentax Camera and Field Accessories 06-26-2018, 05:40 AM  
Focusing Screen or LV Aid or Tenpa 1.36 Magnifier?
Posted By Tas
Replies: 17
Views: 1,876
The S type screen is indeed a Canon screen but it is modified to fit the K-1. The mods aren't extensive and some forum members have done them themselves.

Focusingscreen.com do the mods before sending the screen to you if you get a screen from them. Then all you need to do is install it, test for back/front focus and use the supplied spacers if an adjustment is needed.

Tas
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