tom1234567
Senior Member
is there an adapter for my Pentax K3 lens to fit the X-T1
Thanks
Tom G
Thanks
Tom G
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Quick question re Fuji / Pentax lens
- Thread starter tom1234567
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Hi,
I came from Pentax to Fuji. There are essentially two types of Pentax lenses - those with an aperture ring and those without, ie the DA lenses - and two types of adapters to suit. Both are manual focus only.
Cheers, Rod
I came from Pentax to Fuji. There are essentially two types of Pentax lenses - those with an aperture ring and those without, ie the DA lenses - and two types of adapters to suit. Both are manual focus only.
- A PK lens with an aperture ring works easily and well on a plain adapter once you enable 'shoot without lens' in the camera menu.
- If you have a lens without an aperture ring you need to buy an adapter with its own control ring to control the aperture on the lens. These work, but in my experience, not all that well. The problem is that they tend to close the lens diaphragm from wide open to fully stopped down in a very small movement of the ring. They aren't marked for aperture because the adapter doesn't know which Pentax lens is mounted. You have to gauge the aperture change from the change in shutter speed as you stop down or actually look at the hole to see the approximate aperture. This loses precision and slows things down. Although it works, I gave up using Pentax lenses without an aperture ring on my XT1, which was a pity because two of the lenses that Fuji doesn't offer anything like are the 70/2.4 Limited and the 100/2.8WR macro that I had.
Cheers, Rod
tom1234567
Senior Member
Hi Rod the lense that I want to keep for the x-t1 is my Tamron 90mm macro it works great on a k3 so I would like to use it with the x-t1
thank you all for the answers
Tom G
The Tammy macro should work fine since it has an aperture ring. You just lose AF which isn't a big deal at all for macro work. That is a very good lens and good to bring over since there is no equivalent macro in that range. Only thing left is to choose an adapter. Most seem to say the cheap ones on Ebay and Amazon work well enough.
Since it was mentioned, the Pentax 100mm WR would look fantastic on the X-T1. I'd love to see a picture of that. Too bad there isn't a good adapter option.
That lens is the main reason I haven't jumped to Fuji yet (along with uncertainty on how well MF would work for adapted long teles). However, with the upcoming 90mm I think I may finally make the switch.
Since it was mentioned, the Pentax 100mm WR would look fantastic on the X-T1. I'd love to see a picture of that. Too bad there isn't a good adapter option.
That lens is the main reason I haven't jumped to Fuji yet (along with uncertainty on how well MF would work for adapted long teles). However, with the upcoming 90mm I think I may finally make the switch.
PentaxNick
Senior Member
What advantage do you see to switching from the Pentax to Fuji? I know there is a small saving in size and weight for the camera, but the lenses seem as large and sometimes heavier, and the sensor has less Mp, at least for the K3. You lose access to the Limited primes.
i'm only asking because I keep going through this debate myself as I'd like a smaller Kit. I like the handling and interface of the Fuji, but keep looking at the Olympus too.
Nick
i'm only asking because I keep going through this debate myself as I'd like a smaller Kit. I like the handling and interface of the Fuji, but keep looking at the Olympus too.
Nick
Hi Nick,
I switched from a K5 to the XT1 so the 16mpx were the same. For me it was all about getting a smaller kit, a camera whose ergonomics I really liked, the best EVF going, and the best 14mm and 18-55 lenses in the business. I honestly don't think you could find a better lens in those two FLs from anyone else (including Pentax). Fuji XF lenses generally are every bit as good as the Pentax Limited Series.
You don't lose access to the Pentax Limited lenses - you just lose AF. OTOH, although most Pentax lenses work fine on an adapter, there are issues with DA lenses on adapters. My main regret was about the DA70/2.4 and the DFA100mm WR macro. These were the FLs Fuji doesn't offer and would have complemented my 18-55 zoom very nicely. (There is a 120mm macro due out next year, but there's nothing like the tiny 70mm now or on the Fuji road map.) I did try DA lenses on an adapter with an aperture control. They were usable, but only just - the adapter closed the diaphragm from wide open to f22 in such a small movement that they were very imprecise and fiddly. I stopped trying to use them and bought a 90mm with an aperture ring.
Overall, it's been a beneficial changeover for me. I love the XT1. The mirror-less 'small kit' equation works if you keep the kit small because the main savings of weight are in the smaller body. That suits me fine - I'm still using the 14, 18-55 and CV90/3.5 as my usual three lens kit. I have bought the 60mm macro and the 55-200mm zoom and take them if I know I'm going to need them. I do still have a swathe of Nikon and Pentax lenses and use them occasionally, but TBH, it's getting less and less.
Cheers, Rod
I switched from a K5 to the XT1 so the 16mpx were the same. For me it was all about getting a smaller kit, a camera whose ergonomics I really liked, the best EVF going, and the best 14mm and 18-55 lenses in the business. I honestly don't think you could find a better lens in those two FLs from anyone else (including Pentax). Fuji XF lenses generally are every bit as good as the Pentax Limited Series.
You don't lose access to the Pentax Limited lenses - you just lose AF. OTOH, although most Pentax lenses work fine on an adapter, there are issues with DA lenses on adapters. My main regret was about the DA70/2.4 and the DFA100mm WR macro. These were the FLs Fuji doesn't offer and would have complemented my 18-55 zoom very nicely. (There is a 120mm macro due out next year, but there's nothing like the tiny 70mm now or on the Fuji road map.) I did try DA lenses on an adapter with an aperture control. They were usable, but only just - the adapter closed the diaphragm from wide open to f22 in such a small movement that they were very imprecise and fiddly. I stopped trying to use them and bought a 90mm with an aperture ring.
Overall, it's been a beneficial changeover for me. I love the XT1. The mirror-less 'small kit' equation works if you keep the kit small because the main savings of weight are in the smaller body. That suits me fine - I'm still using the 14, 18-55 and CV90/3.5 as my usual three lens kit. I have bought the 60mm macro and the 55-200mm zoom and take them if I know I'm going to need them. I do still have a swathe of Nikon and Pentax lenses and use them occasionally, but TBH, it's getting less and less.
Cheers, Rod
The Soul Hunter
Senior Member
There is a cheap adapter on ebay from about a dozen different vendors. I have one and it is fine with older lenses that have aperture rings.
If you want to adapt the newer lenses that don't have aperture rings, the only adapter I know of is the Novaflex
Link to B&H Photo website:
Novoflex Adapter for Pentax K Mount Lenses to Fujifilm X Mount Digital Cameras
I used a Pentax FA 77/1.8 on a Fuji X camera. It works, MF of course, and the result is fine.
Fuji has a small 27mm pancake lens. I like MF legacy primes, and there are small ones, mostly rangefinder mounts, that produce fine images.
I get shots of higher image quality from an X-E1 than I got from a Pentax K-5.
Rod can give you much better information than I can since I haven't actually had any Fuji experience yet, but I don't anticipate any image quality advantage. Until proven otherwise, I expect at least a minor downgrade in IQ at least from the 31mm and k5IIs sensor combo.
For me it is all about the handling and size. I need something that I want to pick up and bring with me, not to mention something my wife would actually use so that I can be in a picture for once. I've always preferred the size and handling of the old film SLRs. The X-T1 just looks like it would give me some part of the enjoyment I used to have shooting film bodies without losing too much (or anything at all) on IQ or capability.
A big kicker for me is also the large quality viewfinder with the EVF technology finally getting to where it needs to be. APS-C VF has always annoyed me - feels like looking through a tunnel. The X-T1 VF is big, bright, and loaded with functionality.
You are right about some of the lenses, but even just the fuji 35mm/touit 32mm would give me a small kit with a normal view that can go anywhere. The fuji 18mm looked pretty small as well. It is strange that Fuji can't put out some lenses like the Pentax 100mm WR or even something the size of the F* 300mm. Seems like a no brainer to me.
You have to ask yourself what meets your needs. From what I've read, the X-T1 probably can't be the all round work horse that the K3 is. Whether that is the case or not, I don't need that right now. Olympus looks like a really good option on many levels, but I fear (maybe irrationally) the step down even further in sensor size.
For me it is all about the handling and size. I need something that I want to pick up and bring with me, not to mention something my wife would actually use so that I can be in a picture for once. I've always preferred the size and handling of the old film SLRs. The X-T1 just looks like it would give me some part of the enjoyment I used to have shooting film bodies without losing too much (or anything at all) on IQ or capability.
A big kicker for me is also the large quality viewfinder with the EVF technology finally getting to where it needs to be. APS-C VF has always annoyed me - feels like looking through a tunnel. The X-T1 VF is big, bright, and loaded with functionality.
You are right about some of the lenses, but even just the fuji 35mm/touit 32mm would give me a small kit with a normal view that can go anywhere. The fuji 18mm looked pretty small as well. It is strange that Fuji can't put out some lenses like the Pentax 100mm WR or even something the size of the F* 300mm. Seems like a no brainer to me.
You have to ask yourself what meets your needs. From what I've read, the X-T1 probably can't be the all round work horse that the K3 is. Whether that is the case or not, I don't need that right now. Olympus looks like a really good option on many levels, but I fear (maybe irrationally) the step down even further in sensor size.
The Soul Hunter
Senior Member
I'm using both the K3 and the X-T1. There are a few things the K3 does better, but the X-T1 is a pretty good all rounder.
The Fuji X system is about 3 years old. Fuji is filling it out at a good pace with excellent lenses. There is a 120 macro as well as a longer telephoto zoom (100-400), though I expect it will be slower, probably f/4.5-5.6 coming next year, and they have already introduced a 90mm, 35mm and 16mm this year.
These things don't happen overnight, and rarely as quickly as we would like.
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I have no issue with what Fuji is doing, hence why I will be buying in to the system. The speed of development and quality is impressive. Good to hear your comparison to the k3. Also a good point to bring up the coming 35mm as it shows some commitment to compact design.
PentaxNick
Senior Member
The lenses I'd really miss are the 15mm Ltd, the 35mm Macro Ltd (the best all round walkabout lens ever), the 70mm Ltd and the 100mm WR Macro. I sometimes use the 16-50mm* when the weather is really bad or the 18-135mm for flexibility at new events.
Fuji seem to be missing most of these, or the Fuji option is even bigger and heavier than the Pentax. I'm torn because I love the output from the X-trans, owning the X20 and X30 and having used the X100s.
BTW I think the X30 is the best in it's class for handling, if only it had a larger sensor for its size
Nick
Fuji seem to be missing most of these, or the Fuji option is even bigger and heavier than the Pentax. I'm torn because I love the output from the X-trans, owning the X20 and X30 and having used the X100s.
BTW I think the X30 is the best in it's class for handling, if only it had a larger sensor for its size
Nick
I see your dilemma with that lineup, especially if you rely on going close to 1:1 for macro. The decrease in body size could offset some differences like the fuji 14mm to the 15mm limited, but you have some very compact lenses.
Have you considered the K-S2? It is a little smaller and lighter.
Have you considered the K-S2? It is a little smaller and lighter.
PentaxNick
Senior Member
Yes I might look at the KS2. I guess what I'd really like is a smaller EVF Pentax with an adaptor allowing full functionality with all Pentax lenses. Something the size of the ME Super would be great! I guess the XT10 is getting that way.
Nick
Nick
The Soul Hunter
Senior Member
If there is anything really off kilter to be said about the Fuji system, it is that many of the lenses are rather large , and they are quirky to say the least. Some lenses have aperture rings, some don't. The ones that do, on most the apertures are marked, on the 14-24 they aren't though. On some lenses, manual focus is selected by pushing the focus ring forwards (or is it pulling backwards, I don't recall), on some (most) it's the switch on the camera body.
They haven't quite figured out that consistency of operation is important for a camera system. What is important is that you know you are buying into a design philosophy. Fuji is not ever likely to make a camera that looks like the plastic blobs that everyone else makes, for example.
Hi again Nick,
I'm not sure why you'd be missing out on all of these. Like Pentax, Fuji does offer an excellent high grade 16-55 f2.8 and an 18-135, both of which are sealed. The Fuji 14mm is larger than the Pentax 15mm Ltd (which I owned) but it remains a light lens at 235g. A good thing about being its size is that the filter ring matches the filter ring of the 18-55, so if you use a few filters, that's handy. And IMO it's a much better lens - the corners are sharp from f4, it matches it in great resistance to flare, and there is even less distortion than the minimal level of the Pentax 15mm. Yes, I can only lament the omission of a small short tele lens like the Pentax 70/2.4, but Rome wasn't built in a day - it may come in future. A 120mm macro is on their road map for next year, though it's a big IF lens like the Canikon lenses.
The Pentax and Fuji systems are both excellent systems. It really comes down to what you like..... Enjoy your decision-making.
Cheers, Rod
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