[BruceBanner]

I assume that is a cropped image - am I making an ass of me?. How are the corners from the PLM on full frame? Is there much vignetting?

It's a great image, BTW.

Nah no crop, just twisted/straightened. Click the pic, visit the image and zoom in to see it's not a crop.

I'm starting to get a reputation for 'Mr Compromise' and often use a lot of crop lenses on FF Mode on the K-1, I even have albums so that people can inspect the images better;

55-300PLM

HD DA 20-40

DA 12-24


So in these albums every image is in FF mode.

In regards to the PLM, I would avoid if the edging and corners matters to you, I would suggest that for a lot of crop glass in FF mode (you're essentially using parts of the lens elements that the designers did not account for so quality is likely going to be subpar. I like to think that you can get a good degree of usability out of a crop lens however in FF mode, just depends on what you're happy to compromise on. With the 55-300 I think there is heavy vignetting from about 70-120, all other focal lengths it seems to be quite usable, especially if content with some kind of crop such as 5:7 etc.
Maybe one day I will take test shots at different FL for the PLM, and then show how it is natively and want you can manage with some simple LR vignette removal tricks, hopefully these albums however give you an idea of what can be done in a finalised edited version.

My issue was size and weight, I tried the DA* 60-250, was too heavy, the DFA 70-210 might be a better alternative (as I still saw vignetting with my 60-250 copy I had on loan), but the DFA 70-210 is twice as heavy as the PLM and also 3x the price. I'll just soldier on with my PLM I think

[Canada_Rockies]

Nah no crop, just twisted/straightened. Click the pic, visit the image and zoom in to see it's not a crop.

I'm starting to get a reputation for 'Mr Compromise' and often use a lot of crop lenses on FF Mode on the K-1, I even have albums so that people can inspect the images better;

So in these albums every image is in FF mode.

In regards to the PLM, I would avoid if the edging and corners matters to you, I would suggest that for a lot of crop glass in FF mode (you're essentially using parts of the lens elements that the designers did not account for so quality is likely going to be subpar. I like to think that you can get a good degree of usability out of a crop lens however in FF mode, just depends on what you're happy to compromise on. With the 55-300 I think there is heavy vignetting from about 70-120, all other focal lengths it seems to be quite usable, especially if content with some kind of crop such as 5:7 etc.
Maybe one day I will take test shots at different FL for the PLM, and then show how it is natively and want you can manage with some simple LR vignette removal tricks, hopefully these albums however give you an idea of what can be done in a finalised edited version.

My issue was size and weight, I tried the DA* 60-250, was too heavy, the DFA 70-210 might be a better alternative (as I still saw vignetting with my 60-250 copy I had on loan), but the DFA 70-210 is twice as heavy as the PLM and also 3x the price. I'll just soldier on with my PLM I think

Thanks for the clear explanations. I don't have an FF body any more; my son was interested in getting back into film so I gave him my SF-1 the last time he was here.

[paulh]

A big old eucalyptus, Carpinteria, Calif. DA18-135 on K10D:

[Sir Nameless]

A big old eucalyptus, Carpinteria, Calif. DA18-135 on K10D:

Very nice, great light!

[paulh]

Very nice, great light!

thank you, Sir

[paulh]

DA18-135 on K10D:

[BruceBanner]

DA 12-24 on the K-1

[BruceBanner]

55-300PLM

[BruceBanner]

K-1+DA 12-24 (FF Mode)

[Canada_Rockies]

K-1+DA 12-24 (FF Mode)

Very nice, Bruce. Is that the full frame or cropped a bit?

[BruceBanner]

Very nice, Bruce. Is that the full frame or cropped a bit?

Um I think hardly cropped, maybe straightened just, it's 7586x5318 making it 40mp, (but this includes the bordering).

[BruceBanner]

55-300PLM (FF mode on K-1).

[Canada_Rockies]

Um I think hardly cropped, maybe straightened just, it's 7586x5318 making it 40mp, (but this includes the bordering).

I was just wondering because the corners aren't badly darkened on a 24x36 frame. Thanks for answering.

[BruceBanner]

I was just wondering because the corners aren't badly darkened on a 24x36 frame. Thanks for answering.

Yeah even at 19mm with the hood on you can resolve the vignetting pretty decently. IMO it's not the vignetting you have to be concerned with, it's about edge and corner IQ. Whenever using a crop lens on a FF system (in FF mode) and trying to 'wing it' you'll never have great edge and corner sharpness because essentially you're using part of the optics the designers never intended. Now it might be that they hold up ok, but that would be more fluke than intentional (by them). So if wide angle and edge to edge IQ is important then don't use lenses, get a proper FF lens (15-30, Irix 15).
But that doesn't rule out the use of these lenses in FF mode, there are lots of scenarios and shooting styles that don't care at all about edge and corner IQ. So you just have to be mindful of the intention.

[BruceBanner]

K-1+HD DA 20-40, FF Mode @40mm (cropped to 4:3).