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02-26-2011, 01:21 AM   #1
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Upgrade from *ist DL

Hi All,

I have purchased my Pentax *ist DL with the kit lens (18-55) , almost 5 years back. Mean while I have purchased couple of lenses like Sigma 70-300 and a Tamron 90 (Macro).

Now I want to upgrade my camera to K-5 / K-7 (depending on my available funds) or may be K20D

My biggest concern is whether my these lenses will be still compatible with the new camera body ?

Can anyone confirm please ?

Thanks,
Achirangshu

02-26-2011, 02:16 AM   #2
hcc
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I believe that all the 3 lenses are compatible with the K-7 and K20d, and I would assume with the K-5, although there were a few threads about lens compatibility issues with the K-5.
02-26-2011, 03:20 AM   #3
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New issue on the K-5? I have lots of lenses and never had such problem with K-5. Can you elaborate more on this topic.

To OP: These lenses will work, probably a lot better that they did on the DL (SR, faster AF, beter metering...)
02-26-2011, 03:54 AM   #4
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I just got a K-5 to add to my K100D.

I have the APO version of your Sigma zoom.

It is OK on the K-5. Definitely focuses better than the K100D. The cam does have significantly more resolution than the lens at larger apertures.

However, the added light sensitivity of the K-5 allows me to use the lens where before I could get NOTHING usable.

Think school plays, indoor sporting events, etc.

I recently shot an indoor basketball game at ISO 6400 and was able to get a keeper rate of about 90%. (ignoring composition) The shots on the longer end of the lens weren't as sharp as I hoped but considering it was a $250 lens I was happy.

With my K100 in the same lighting I would have got around a 10% "keeper" rate.

The only catch with the K-5 is that I REALLY want a $1000K long zoom lens now. The body is that good - it begs for it.

Get that K-5 - I doubt you will regret it.

Is it perfect- no. But to hear some of the complaints around here you would miss that its orders of magnitude better in low light than past generations.

If you expect perfect autofocus in all conditions YMMV but if you have been happy with your istD all this time you will be thrilled with the K5.

02-26-2011, 03:56 AM   #5
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Oh yeah,

I did hours of macro shooting yesterday with a sigma 50mm macro and found the autofocus STELLAR.
02-26-2011, 04:52 AM   #6
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That's one problem I doubt we'll ever have with Pentax - backward compatibility is likely here to stay for good with this system.
02-26-2011, 10:37 AM   #7
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QuoteOriginally posted by elho_cid Quote
New issue on the K-5? I have lots of lenses and never had such problem with K-5. Can you elaborate more on this topic.
There have been a few earlier threads on thrid-party lens compatibility.

*On the Tamron 90mm and K-5:
https://www.pentaxforums.com/forums/pentax-k-5-forum/127099-problems-my-tamron-90mm-macro.html

* Another thread:
https://www.pentaxforums.com/forums/pentax-k-5-forum/127525-new-k5-lens-issue.html
02-26-2011, 11:40 AM   #8
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Thanks a lot to all of you.. that's a saver for me (read my mind ). Now I guess I can focus on my fund :ugh: than on K-5

~Achi

02-26-2011, 11:46 AM   #9
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hcc: I don't think this is a reason to worry. Actually before I got myself the K-5 I never thought I could easily autofocus on birds flying by using a Sigma macro lens. In some cases adjustment is necessary, perhaps even in service.
02-28-2011, 08:45 PM   #10
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I upgraded from the *ist dl to the K20D. Every lens that I had with the *ist dl worked on the K20D. My Tamron 70/200 2.8 works on both as well.
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