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07-03-2018, 07:49 AM   #1
Magio
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Vignetting

Hello and Hola to every one.
I recently made the jump from Nikon to Pentax.
I am really happy with the Pentax colors and the quality of both the camera and the lenses, but I am having an issue with Vignetting with the 35mm 2.8. Every time I used the camera in full frame mode I get extreme vignette. Is this normal or did I get a lemon.
I never had this issue with Nikon.

07-03-2018, 07:56 AM - 1 Like   #2
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Hello there...

I assume you're talking about the DA 35mm f/2.8 Macro Limited lens? If so, that lens is designed for an APS-C sensor. The "DA" designation on Pentax lenses tells you this - much like Nikon DX lenses which are designed for APS-C, while FX lenses are for full-frame. The image circle produced by the lens isn't sufficient to cover a full frame sensor without significant vignetting.

Hope this helps
07-03-2018, 08:08 AM   #3
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The 35mm f2.4 and f2 lenses are better at full frame. The 2.4 isn't technically full frame but it is close enough. The F2 is a film era lens that does a great job.

But the da 35 macro f2.8 is strictly a crop lens.
07-03-2018, 08:58 AM   #4
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For future reference:

DA and DA-L are crop only.
DFA / FA / F are autofocus full frame. The FA and F are film era.

Generally "all" Pentax brand manual focus k mount lenses are full frame.

Generally "all" Pentax brand m42 screwmount lenses are full frame and can be adapted to the K-1.

07-03-2018, 08:59 AM   #5
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QuoteOriginally posted by UncleVanya Quote
The 35mm f2.4 and f2 lenses are better at full frame. The 2.4 isn't technically full frame but it is close enough. The F2 is a film era lens that does a great job.

But the da 35 macro f2.8 is strictly a crop lens.
UncleVanya is correct but it is only so because of the vignetting on FF. Vignetting is a kind of religious concept which can lead to endless debates about what is acceptable but I think under many conditions the 35 2.8 vignetting is acceptable on the K-1. Many others will disagree. Some violently
07-03-2018, 09:31 AM   #6
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QuoteOriginally posted by Mikesul Quote
UncleVanya is correct but it is only so because of the vignetting on FF. Vignetting is a kind of religious concept which can lead to endless debates about what is acceptable but I think under many conditions the 35 2.8 vignetting is acceptable on the K-1. Many others will disagree. Some violently
I defer to those with experience using the lens. Maybe posting a few examples of what can be expected from the DA 35 f2.8 Macro here or pointing to the samples taken on the K-1 would help the OP determine if they are experiencing the same level of vignetting or more.
07-03-2018, 09:48 AM   #7
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QuoteOriginally posted by UncleVanya Quote
I defer to those with experience using the lens. Maybe posting a few examples of what can be expected from the DA 35 f2.8 Macro here or pointing to the samples taken on the K-1 would help the OP determine if they are experiencing the same level of vignetting or more.
Good idea I will try to get to this.
07-03-2018, 09:54 AM   #8
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QuoteOriginally posted by Magio Quote
Hello and Hola to every one.
I recently made the jump from Nikon to Pentax.
I am really happy with the Pentax colors and the quality of both the camera and the lenses, but I am having an issue with Vignetting with the 35mm 2.8. Every time I used the camera in full frame mode I get extreme vignette. Is this normal or did I get a lemon.
I never had this issue with Nikon.
That one happens to be a crop lens. You can see and filter which lenses are FF and crop here:

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