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Forum: Pentax Lens Articles
07-13-2018, 09:18 AM
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By "outer cover" are you talking about the rubber on the hood at he end?
By "inner hood" you mean the plastic part inside this rubber?
Do you know how much needs to be taken off?
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Forum: Pentax Lens Articles
06-19-2017, 08:38 AM
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Did you do tests at multiple focal lengths? I couldn't tell looking quickly at the site.
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Forum: Pentax Lens Articles
08-04-2016, 10:31 AM
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Various results have been reported. Here's a good example of one:
diglloyd: Pentax DA HD Limited 35mm f/2.8 Macro Aperture Series: 'Map' (Pentax K1 SuperRes)
The lens seems to vignette up to about f/5.6 or f/8 per the reports I have seen. However you can crop larger than APSC and less than FF and get pretty useful images as you might surmise from the f/2.8 shot linked above. I'd say it is not really "full frame" but it is pretty close stopped down and offers more than APSC - however to be clear I do not have the lens or a FULL frame DSLR to test it on.
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Forum: Pentax Lens Articles
06-13-2016, 07:23 PM
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What would be interesting is to pit this result against an FA 35 f/2 to see if there is a significant improvement in vignetting.
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Forum: Pentax Lens Articles
05-12-2016, 08:45 PM
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Thank you. I see slight improvements over the Takumar one - but it's hard to see them side by side. It is subtle at best. Thanks again.
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Forum: Pentax Lens Articles
05-12-2016, 08:32 PM
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Mostly just curious, but please.
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Forum: Pentax Lens Articles
05-12-2016, 08:19 PM
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Did you do any without a hood?
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Forum: Pentax Lens Articles
05-06-2016, 12:55 PM
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With the hood or without?
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Forum: Pentax Lens Articles
04-19-2016, 05:10 PM
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I actually agree with the OP. Take it to a new thread and link back if you want.
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Forum: Pentax Lens Articles
04-18-2016, 03:44 PM
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Sorry but this is very confusing - which are not?
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Forum: Pentax Lens Articles
06-24-2015, 01:12 PM
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Broken link? No picture or link as far as I can tell.
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Forum: Pentax Lens Articles
06-23-2015, 09:10 AM
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I'm irrationally happy to see a number of my lenses listed. I say irrationally since I have no plans to buy the FF Pentax body. It's just nice to know the lenses will work in both formats if necessary and if circumstances alter.
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Forum: Pentax Lens Articles
04-03-2015, 11:16 AM
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It might also be possible to have a variable crop ratio and set the crop per lens like you set AF adjustments today. This would only work on modern lenses with communication with the body.
EDIT: To be clear Variable in this case was not meant to be a continuously variable ratio that scales as the lens zooms etc. What I was talking about was the ability to set a specific crop value out of a set of preset ratio choices to be associated/default with the use of a particular (modern) lens based on a user selection.
I realize this might have been mistaken for something more like the continuous zoom crop that was previously mentioned and wanted to clarify what I meant.
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Forum: Pentax Lens Articles
04-01-2015, 10:30 AM
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Forum: Pentax Lens Articles
04-01-2015, 09:59 AM
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I never said it could do SDM. I said the lens can possibly work in Manual Focus because it gets the power to do the POWERED manual focus by wire from the SDM/Power Zoom contacts. Obviously the SDM focusing itself won't work anymore than it works on a K100D.
Do you know for a fact that the lens fails to focus manually on a film camera with power zoom?
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Forum: Pentax Lens Articles
03-31-2015, 11:00 AM
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I'm guessing any power zoom capable body (or SDM) will work for the powered focus by wire option.
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Forum: Pentax Lens Articles
02-08-2015, 09:25 AM
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Forum: Pentax Lens Articles
02-08-2015, 07:06 AM
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I'd like to know this also. In lieu of the ff sensor, a few shots on film would be nice.
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