mofifying 60-250 for full-frame use and any feedback

Nick Papagiorgio · 11-22-2018, 02:30 PM

I remember seeing an article for modifying the 60-250 zoom lens for use on full-frame camera body.

1 - please point me to where the instructions are at
2 - has anyone had experience with this modification and any got-yas to learn by

Thanks...

Docrwm · 11-22-2018, 02:42 PM

How to Modify the DA* 60-250mm F4 for Full Frame - Articles and Tips | PentaxForums.com

Adam · 11-22-2018, 03:21 PM

Our review of this lens also has FF tests. It works great!

Docrwm · 11-22-2018, 03:44 PM

The baffle replacement files can be found through this post:
DA* 60-250 mod for FF - Page 16 - PentaxForums.com

pschlute · 11-22-2018, 03:47 PM - **1 Like**

If you usually crop your pictures, dont bother with the conversion. It works fine as it is

**clickclick** · 11-22-2018, 06:41 PM

I did the conversion and think it was both simple and well worth the improvement in the corners. If you can figure out how to use a screw driver and are careful, this is really pretty straight forward. The old baffle slides out easy enough, and the new one fits in just fine too. I found the fit about perfect.

bdery · 11-23-2018, 06:41 AM - **1 Like**

I am the one who wrote the article/review.

I love the modification. The 60-250 has become a much more versatile lens, and is just as good optically. After more than a year, I have nothing but good words to say. Go without worries.

**clickclick** · 11-23-2018, 10:23 AM

Originally posted by bdery

I love the modification.

Which flavor of baffle are you using? I have both, but started with the one with the frame, and I think I'm going to stick with this one based on what I'm seeing so far.

bdery · 11-23-2018, 10:44 AM

Originally posted by clickclick

Which flavor of baffle are you using? I have both, but started with the one with the frame, and I think I'm going to stick with this one based on what I'm seeing so far.

The one with the rectangle cutout seems to have a very small positive impact on sharpness, and an obvious negative impact on vignetting. So I use the purely cylindrical one with the circular opening.

**clickclick** · 11-23-2018, 11:56 AM

Originally posted by bdery

a very small positive impact on sharpness

I must confess to suffering from advanced stages of pixel peeping, and went with the rectangular one for this reason. So far, I haven't found the vignetting to be an issue beyond what I could address in post if I felt like it. That said, it was so easy to do, I still might play with the circular one. My baffles have a nice snug interference fit, and I didn't feel any need to glue them together. This makes it really easy to switch between them.

**Scorpio71GR** · 11-23-2018, 03:56 PM - **1 Like**

I designed the baffle that was used in the Pentax Forums revew. I may have a few printed ones around here. If not can always print some up quickly. The modification is fairly simply. Just a set of JIS screwdrivers and work in a very clean area. I use my 60-250 more on the K-1 than the K3.

**clickclick** · 11-27-2018, 06:11 PM

Being able to convert this lens for full frame use really is great. Thanks @bdery and @Scorpio71GR for your work making it so easy.

Docrwm · 11-27-2018, 06:17 PM

I'm even seeing 60-250s on eBay described as modified for FF by changing the baffle.

11-22-2018, 02:30 PM	#1
Nick Papagiorgio New Member Join Date: Mar 2018 Posts: 6	mofifying 60-250 for full-frame use and any feedback I remember seeing an article for modifying the 60-250 zoom lens for use on full-frame camera body. 1 - please point me to where the instructions are at 2 - has anyone had experience with this modification and any got-yas to learn by Thanks...

11-22-2018, 03:21 PM	#3
Adam Administrator Site Webmaster Join Date: Sep 2006 Location: Arizona Photos: Gallery \| Albums Posts: 51,608	Our review of this lens also has FF tests. It works great! Adam PentaxForums.com Webmaster (Site Usage Guide \| Site Help \| My Photography) PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating or purchasing one of our Pentax eBooks. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

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11-22-2018, 02:42 PM	#2
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	How to Modify the DA* 60-250mm F4 for Full Frame - Articles and Tips \| PentaxForums.com

11-22-2018, 03:44 PM	#4
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	The baffle replacement files can be found through this post: DA* 60-250 mod for FF - Page 16 - PentaxForums.com

11-22-2018, 03:47 PM - 1 Like	#5
pschlute Moderator Loyal Site Supporter Join Date: Mar 2007 Location: Surrey, UK Photos: Gallery Posts: 8,216	If you usually crop your pictures, dont bother with the conversion. It works fine as it is

11-22-2018, 06:41 PM	#6
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,904	I did the conversion and think it was both simple and well worth the improvement in the corners. If you can figure out how to use a screw driver and are careful, this is really pretty straight forward. The old baffle slides out easy enough, and the new one fits in just fine too. I found the fit about perfect.

11-23-2018, 06:41 AM - 1 Like	#7
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,362	I am the one who wrote the article/review. I love the modification. The 60-250 has become a much more versatile lens, and is just as good optically. After more than a year, I have nothing but good words to say. Go without worries.

11-23-2018, 10:23 AM	#8
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,904	Originally posted by bdery I love the modification. Which flavor of baffle are you using? I have both, but started with the one with the frame, and I think I'm going to stick with this one based on what I'm seeing so far.

11-23-2018, 10:44 AM	#9
bdery Pentaxian Join Date: Mar 2008 Location: Quebec city, Canada Photos: Gallery Posts: 9,362	Originally posted by clickclick Which flavor of baffle are you using? I have both, but started with the one with the frame, and I think I'm going to stick with this one based on what I'm seeing so far. The one with the rectangle cutout seems to have a very small positive impact on sharpness, and an obvious negative impact on vignetting. So I use the purely cylindrical one with the circular opening.

11-23-2018, 11:56 AM	#10
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,904	Originally posted by bdery a very small positive impact on sharpness I must confess to suffering from advanced stages of pixel peeping, and went with the rectangular one for this reason. So far, I haven't found the vignetting to be an issue beyond what I could address in post if I felt like it. That said, it was so easy to do, I still might play with the circular one. My baffles have a nice snug interference fit, and I didn't feel any need to glue them together. This makes it really easy to switch between them.

11-23-2018, 03:56 PM - 1 Like	#11
Scorpio71GR Loyal Site Supporter Join Date: Nov 2014 Location: Michigan Photos: Gallery \| Albums Posts: 6,023	I designed the baffle that was used in the Pentax Forums revew. I may have a few printed ones around here. If not can always print some up quickly. The modification is fairly simply. Just a set of JIS screwdrivers and work in a very clean area. I use my 60-250 more on the K-1 than the K3.

11-27-2018, 06:11 PM	#12
clickclick Loyal Site Supporter Join Date: May 2016 Location: East Coast Posts: 2,904	Being able to convert this lens for full frame use really is great. Thanks @bdery and @Scorpio71GR for your work making it so easy.

11-27-2018, 06:17 PM	#13
Docrwm Veteran Member Join Date: Sep 2010 Location: Somewhere in the Southern US Photos: Gallery \| Albums Posts: 12,285	I'm even seeing 60-250s on eBay described as modified for FF by changing the baffle.