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Pleasant Surprise!

Started Feb 16, 2020 | Discussions
ozdean
ozdean Forum Pro • Posts: 28,665
Pleasant Surprise!

My K5IIs 's are now autofocusing my 55-300plm!

I am certain they weren't doing this originally? It was only from K50 on.

https://www.dpreview.com/forums/thread/4118041

Does anyone know when/how this came about?

I have 1.07 installed, did it happen with this version? I though I had this version installed when originally testing.

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Regards Dean - Capturing Creation
N.B. All my Images are Protected by Copyright

 ozdean's gear list:ozdean's gear list
Pentax MX-1 Pentax K-5 IIs Pentax K-3 Mark III Pentax smc DA* 55mm F1.4 SDM Pentax smc DA 15mm F4 ED AL Limited +14 more
Pentax K-50
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altis Senior Member • Posts: 1,109
Re: Pleasant Surprise!

I think that AF works but the diaphragm does not:

http://www.ricoh-imaging.co.jp/english/products/lens/k/telephoto/hdpentax-da-55-300_re/

So, unless you are trying to shoot at the widest aperture, your image will be overexposed.

ozdean
OP ozdean Forum Pro • Posts: 28,665
Re: Pleasant Surprise!
1

Yes you are right it is the diaphragm - won't stop down. AF is fine.

My Error - nice surprise has evapourated LOL

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Regards Dean - Capturing Creation
N.B. All my Images are Protected by Copyright

 ozdean's gear list:ozdean's gear list
Pentax MX-1 Pentax K-5 IIs Pentax K-3 Mark III Pentax smc DA* 55mm F1.4 SDM Pentax smc DA 15mm F4 ED AL Limited +14 more
PentUp
PentUp Veteran Member • Posts: 4,188
Re: Pleasant Surprise!

ozdean wrote:

Yes you are right it is the diaphragm - won't stop down. AF is fine.

My Error - nice surprise has evapourated LOL

I guess nice while it lasted though

 PentUp's gear list:PentUp's gear list
Panasonic Lumix DMC-FZ300 Canon G7 X II Pentax K-x Pentax K-5 II Pentax K-50 +12 more
ozdean
OP ozdean Forum Pro • Posts: 28,665
Re: Pleasant Surprise!

Yes - LOL.

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Regards Dean - Capturing Creation
N.B. All my Images are Protected by Copyright

 ozdean's gear list:ozdean's gear list
Pentax MX-1 Pentax K-5 IIs Pentax K-3 Mark III Pentax smc DA* 55mm F1.4 SDM Pentax smc DA 15mm F4 ED AL Limited +14 more
MrB1 Contributing Member • Posts: 605
Re: Pleasant Surprise!

ozdean wrote:

Yes you are right it is the diaphragm - won't stop down. AF is fine.

My Error - nice surprise has evapourated LOL

You might still be surprised - this lens performs well at open aperture, giving good central sharpness, where it usually matters for longer focal lengths. Open aperture also allows faster shutter speeds and lower ISO helping to reduce camera shake blur and noise at higher magnifications.

Philip

ozdean
OP ozdean Forum Pro • Posts: 28,665
Re: Pleasant Surprise!

Yes Phillip it is very good for a consumer grade lens.

I have my K50 that it works well on.

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Regards Dean - Capturing Creation
N.B. All my Images are Protected by Copyright

 ozdean's gear list:ozdean's gear list
Pentax MX-1 Pentax K-5 IIs Pentax K-3 Mark III Pentax smc DA* 55mm F1.4 SDM Pentax smc DA 15mm F4 ED AL Limited +14 more
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