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11-20-2017, 01:53 PM - 1 Like   #271
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QuoteOriginally posted by Antoine_Pentaxian Quote
In time i might trade the 60-250mm with a tamron 70-200 mm
YMMV, but having used both extensively, there is no way the Tamron could replace the 60-250 for me. Especially now that I've modified the 60-250 for full frame. It's a much better lens in my opinion.

11-20-2017, 01:59 PM - 1 Like   #272
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QuoteOriginally posted by bdery Quote
YMMV, but having used both extensively, there is no way the Tamron could replace the 60-250 for me. Especially now that I've modified the 60-250 for full frame. It's a much better lens in my opinion.
I agree completely and that is why I have both. Right now I am having a hard time getting the 60-250 off the K-1.
11-20-2017, 02:00 PM - 1 Like   #273
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QuoteOriginally posted by Antoine_Pentaxian Quote
Ill get the DA 200mm prime as well then for its faster lens and ill play with the shooting distance. I can get All three lenses the 50mm the 200mm and the 60-250mm for a really good price and ill start with those. In time i might trade the 60-250mm with a tamron 70-200 mm
I don't think i should miss that offer for the 60-250mm now.
I agree as well good choice. The DA*200 is more compact than a 70-200 zoom.
12-29-2017, 02:35 PM   #274
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QuoteOriginally posted by bdery Quote
YMMV, but having used both extensively, there is no way the Tamron could replace the 60-250 for me. Especially now that I've modified the 60-250 for full frame. It's a much better lens in my opinion.
Cream and quality seems to be forgotten - I LOVE MY 60-250mm - sad it's not a pancake and does not directly fit my pocket. Damned Ricoh/Pentax.

04-17-2018, 12:14 AM   #275
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Thank you for you all guys in here, especially with the trials and error, all the effort, Gutta, Scorpio/Michael etc.
Now I am using Michael file to order 3D print, it is cheap, only 3.5usd here, I order 2 pcs for reserve (because it is cheap).
It will be ready in the next 2 days, finger cross, I hope I can do all the mod.

As the owner of DA200, DA300, DFA150-450 and DA60-250, I really want to get rid this lens, but my several trip really teach me to hold this DA60-250 instead to replace it with DFA 70-200.
DFA70-200 F2.8 is as big as DFA150-450,-- they are not for travelling lenses, but DA60-250/F4 is.

Btw, DA200 and DA300 are the fantastic lenses on K1.

Now my K1 is going to Ricoh Japan to upgrade to K1ii, repair the crack because I dropped it and replace the scratch focusing screen, it cost a lot, but I am willing to pay, because I love the IQ of K1, it will take 2 months.

I am very happy, my camera is repairing in Japan !!! it takes time, but me it is no problem, I want the Japanese/Ricoh Japan service, I am more confident with them.

Last edited by Kesha; 04-17-2018 at 12:20 AM. Reason: additional words.
04-17-2018, 04:34 AM   #276
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it is fast, here are the 2 baffles.Now, I have to find a way to make the inner matte, maybe using spray matte paint, or let it be shining?
I can not test on K1, my K1 is on repairing, I can test it with analog Pentax KX.

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04-17-2018, 08:18 AM   #277
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QuoteOriginally posted by bdery Quote
YMMV, but having used both extensively, there is no way the Tamron could replace the 60-250 for me. Especially now that I've modified the 60-250 for full frame. It's a much better lens in my opinion.
Hi,
What makes it much better lens in your opinion?
Cheers

04-17-2018, 10:02 AM - 2 Likes   #278
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QuoteOriginally posted by Ketsuppi11 Quote
Hi,
What makes it much better lens in your opinion?
Cheers
Numerous reasons.

The 60-250 is shorter, narrower, lignter, WR, has silent AF, has in-camera corrections (not valid for FF, of course), has an easily removable foot, is optically better (the Tamron even things out at approximately F5.6 or F8 depending on the focal length). The 60-250 has more reach (that extra 10mm at the wide end really makes a difference), the build quality is better, switching to MF on the lens is much easier, it is much more comfortable to carry on a strap or camera mounting clip (like Peak Design's Capture clip). There is no way I'd ever walk around with the Tamron on a clip, much too cumbersome. I prefer the Pentax's general rendering (bokeh, colours, etc).

The two flaws of the 60-250 when compared to the Tamron 70-200 are that it extends when zooming (that can be a problem or not) and that at close distances and long focal lengths, it shows some focus breathing (the effective focal length changes). Walking one step to the front or the back solves this. Of course there's the one stop of aperture difference, it might be a deal breaker for some. I can use the FA77 or DFA 100 macro WR if I ever need a faster short tele, or crank up the ISO.

I hope I have answered the question. Others might put more emphasis on some perks or flaws, I've explained my point of view.
04-17-2018, 01:00 PM   #279
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QuoteOriginally posted by Kesha Quote
I can not test on K1, my K1 is on repairing, I can test it with analog Pentax KX.
You may want to try a newer body so you get to keep aperture control during your test...

Might even be worth buying a working ZX-5 or something cheap...

-Eric
04-17-2018, 08:01 PM   #280
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I think I will wait for next 2 months after my K1 back from service.

@ketsuppi11 I agreed with @bdery, I know this thread for a long time and I did not do the "surgery" because I want my DA60-250 in its original, but after I got DFA150-450 and I have a chance to try DFA70-200, and I understand that I will not buy DFA 70-200 because the weight and size is almost same with DFA150-450.
It is painful if in my trip I carry DFA70-200 and DFA150-450, and for stage shots that usually took more than 1 hours, I think I need to add monopod, that mean I have to add my stuff.

focal length for my photoshoot style:

- FA20-35 for trip and model
- DA200/f2.8 for model
- DA300/F4 for model
- DFA 150-450 for birding and model

This DA 60-250 will be for stage shot, that don't need F2.8 lens (because today sensor is very good, ISO6400 very acceptable, the F4 lens will be best choice).
I have DA 28-105 but I never use this lens.
And they are some tamron and sigma lenses that I don't like their rendering, color, bokeh.

---------- Post added 04-18-2018 at 10:38 AM ----------

For printed the baffle, I tried to paint it with matte spray paint but it is still shiny in the inner, still has a reflection.
The original baffle has a very good material to absorb the light.

Last edited by Kesha; 04-17-2018 at 08:20 PM.
04-17-2018, 09:55 PM   #281
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QuoteOriginally posted by Kesha Quote
I think I will wait for next 2 months after my K1 back from service.

@ketsuppi11 I agreed with @bdery, I know this thread for a long time and I did not do the "surgery" because I want my DA60-250 in its original, but after I got DFA150-450 and I have a chance to try DFA70-200, and I understand that I will not buy DFA 70-200 because the weight and size is almost same with DFA150-450.
It is painful if in my trip I carry DFA70-200 and DFA150-450, and for stage shots that usually took more than 1 hours, I think I need to add monopod, that mean I have to add my stuff.

focal length for my photoshoot style:

- FA20-35 for trip and model
- DA200/f2.8 for model
- DA300/F4 for model
- DFA 150-450 for birding and model

This DA 60-250 will be for stage shot, that don't need F2.8 lens (because today sensor is very good, ISO6400 very acceptable, the F4 lens will be best choice).
I have DA 28-105 but I never use this lens.
And they are some tamron and sigma lenses that I don't like their rendering, color, bokeh.

---------- Post added 04-18-2018 at 10:38 AM ----------

For printed the baffle, I tried to paint it with matte spray paint but it is still shiny in the inner, still has a reflection.
The original baffle has a very good material to absorb the light.
Did you sand first? You might try that and FLAT not matte paint.
05-14-2018, 05:19 PM   #282
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QuoteOriginally posted by Kesha Quote
I think I will wait for next 2 months after my K1 back from service.

@ketsuppi11 I agreed with @bdery, I know this thread for a long time and I did not do the "surgery" because I want my DA60-250 in its original, but after I got DFA150-450 and I have a chance to try DFA70-200, and I understand that I will not buy DFA 70-200 because the weight and size is almost same with DFA150-450.
It is painful if in my trip I carry DFA70-200 and DFA150-450, and for stage shots that usually took more than 1 hours, I think I need to add monopod, that mean I have to add my stuff.

focal length for my photoshoot style:

- FA20-35 for trip and model
- DA200/f2.8 for model
- DA300/F4 for model
- DFA 150-450 for birding and model

This DA 60-250 will be for stage shot, that don't need F2.8 lens (because today sensor is very good, ISO6400 very acceptable, the F4 lens will be best choice).
I have DA 28-105 but I never use this lens.
And they are some tamron and sigma lenses that I don't like their rendering, color, bokeh.

---------- Post added 04-18-2018 at 10:38 AM ----------

For printed the baffle, I tried to paint it with matte spray paint but it is still shiny in the inner, still has a reflection.
The original baffle has a very good material to absorb the light.
I bought some self adhesive felt material from a hobby store that I lined the inside of my baffles with. After nearly a year I have not had an issue.
01-29-2019, 12:31 PM   #283
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Pentax 60-250mm Baffle Mod - K1 - Samples

Hey guys.
Huge thanks to all those that have commented on this thread and provide instruction and guidance. I have just completed the modification on my 60-250mm by removing the baffle and tube completely. I think the biggest concern is that the gearing and motors are now exposed greatly when changing lenses, which obviously in poor weather and conditions is something to pay extra care an attention too. If I can get my hands on one of the 3d printed replacements, I will re-mod to include the tube, I think this would give me more peace of mind.

Reasoning for the mod, for me at 200mm and above the vignetting on the K1 is too high and even in post I found I was cropping my images aggressively, and even with LR lens corrections it was still more than I really wanted. So hence trying the modification.

So I shot a before and after to see what sort of difference it makes i have attached the image below and uploaded a hi res version to flickr for those who want a closer look.
Please note this wasn't a scientific approach to testing. Simply 3x images with the default lens, focused on my monitor at 60mm F4 / 200mm F4 and 250mm F4 - Then performed the mod and repeated the x3 test shots at the same settings. So if anyone is interested here the results and findings...

60mm not much of a difference perhaps a slight improvement in general.
200mm / 250mm a huge improvement over the stock lens to my eyes and tastes

These images are straight out of camera, no lens corrections applied. I suspect the improvements would be even more pronounced with Lens Corrections applied.

FLICKR > Pentax 60-250mm Baffle Mod - K1

As a plug! if you guys like the above, show your support for a fellow Pentax shooter, why not give me a like, subscribe and view on my Youtube Landscape Photography Channel

Regards
Geoff
Attached Images
 
01-30-2019, 10:57 AM   #284
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Thanks for posting. I did the baffle 'mod' a while back and it helped - seems from your results there is more to be had by removing the thing completely, maybe I need to check on this w/my lens one more time. Guess I find I don't use the lens very much, and when I do I tend to stop down to F/8, tho not always. The darn auto focus drive motor quite working after it was repaired and of course it went kaput AFTER warranty expired on the repair work, ugh....disappointing to say the least. I'm stuck w/manual focus which works fine in some cases and in others I really miss the AF.
Thanks/Bill
01-30-2019, 01:11 PM   #285
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QuoteOriginally posted by wgosma Quote
Thanks for posting. I did the baffle 'mod' a while back and it helped - seems from your results there is more to be had by removing the thing completely, maybe I need to check on this w/my lens one more time. Guess I find I don't use the lens very much, and when I do I tend to stop down to F/8, tho not always. The darn auto focus drive motor quite working after it was repaired and of course it went kaput AFTER warranty expired on the repair work, ugh....disappointing to say the least. I'm stuck w/manual focus which works fine in some cases and in others I really miss the AF.
Thanks/Bill
Ugh - Bill you are one of a small minority but I hate that for you. The DA* 60-250 doesn't seem to have sdm failure often but when it does the conversion process isn't an option. I wish I could convert it for you but we've never figured out the magic reason that lens won't convert.
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