Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
01-26-2010, 11:46 AM   #16
graphicgr8s
Guest




QuoteOriginally posted by Wheatfield Quote
What do I call what?
What do you call the effect of the smaller sensor compared to a film frame.

01-26-2010, 11:55 AM   #17
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
QuoteOriginally posted by graphicgr8s Quote
What do you call the effect of the smaller sensor compared to a film frame.
why would you compare the two :P
01-26-2010, 11:57 AM   #18
New Member




Join Date: Dec 2009
Posts: 24
Original Poster
QuoteOriginally posted by Damn Brit Quote
Can you explain what you mean by that?
I mean that due to the fact that this camera does not have a full frame sensor, I am only seeing a cropped piece of the intended 50mm field of view. It's identified as 1.5x, correct? I just want a wider field of view, but with the other characteristics of my 50mm f1.4 as apposed to that of the stock lens.
01-26-2010, 12:00 PM   #19
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
QuoteOriginally posted by jeans Quote
I mean that due to the fact that this camera does not have a full frame sensor, I am only seeing a cropped piece of the intended 50mm field of view. It's identified as 1.5x, correct? I just want a wider field of view, but with the other characteristics of my 50mm f1.4 as apposed to that of the stock lens.
so why did you buy a 50mm?

buy a 30mm if you want a wider field of view.

If you want a 50mm as it acts on a full frame camera.. then you should have bought a full frame camera!

01-26-2010, 12:10 PM   #20
New Member




Join Date: Dec 2009
Posts: 24
Original Poster
QuoteOriginally posted by Gooshin Quote
so why did you buy a 50mm?

buy a 30mm if you want a wider field of view.

If you want a 50mm as it acts on a full frame camera.. then you should have bought a full frame camera!
Okay I will, just as soon as you send me that 2 grand you owe me from that night in Ottawa

Wow!

I sure didn't mean to start a bunch of semantics arguments. Thanks to everyone who is trying to be helpful.
01-26-2010, 12:22 PM   #21
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
QuoteOriginally posted by jeans Quote
Okay I will, just as soon as you send me that 2 grand you owe me from that night in Ottawa

Wow!

I sure didn't mean to start a bunch of semantics arguments. Thanks to everyone who is trying to be helpful.
This is what Wheatfield meant by "there is no crop factor"

You purchased a cheap camera which is cheap by virtue of its design. There are limitations with which you are going to have to live with.

If a 500 dollar lens is expensive for you, forgive me, but you have chosen the wrong hobby.

PS, i'm too good looking to pay for sex, but thanks for trying.
01-26-2010, 12:32 PM   #22
New Member




Join Date: Dec 2009
Posts: 24
Original Poster
QuoteOriginally posted by Gooshin Quote
This is what Wheatfield meant by "there is no crop factor"

You purchased a cheap camera which is cheap by virtue of its design. There are limitations with which you are going to have to live with.

If a 500 dollar lens is expensive for you, forgive me, but you have chosen the wrong hobby.

PS, i'm too good looking to pay for sex, but thanks for trying.
Welcome to a future of "good enough" technology. I'm sorry you're confused, time travel is disorienting.

In all seriousness you have taught me something. I now know someone can be a Troll and a Dinosaur at the same time. Good night old man.
01-26-2010, 12:33 PM   #23
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
ive been called alot of things on this forum, but never an old man, HAHAHAHA

01-26-2010, 12:55 PM   #24
Veteran Member
Ben_Edict's Avatar

Join Date: Jul 2007
Location: SouthWest "Regio"
Photos: Albums
Posts: 3,303
QuoteOriginally posted by GerryL Quote
I don't think this is always the case as when you want to do some macro and attach the Raynox DCR-150 0r DCR-250.
A lot of people will attest to the quality of Raynox.
Just take a look at the Raynox Macro club: https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/74221-raynox-macro-club.html
I wasn't referring to macro lenses, which can be had in very good quality, if you go for an achromat. I was only referring to the thread openers question about these wide-angle attachments.

A friend used to use one in the past on his film camera and I ofcourse took the opportunity to make my own trials. It was quite an expensive attachment, not those 20 bucks bargains. But the results were crap: internal reflexes, very visible colour aberrations *quite like in your example, in which I cannot see a single really sharp pixel and hefty barrel distortion.

Ben
01-26-2010, 01:03 PM   #25
Site Supporter




Join Date: Oct 2006
Location: Dayton, OH
Photos: Gallery
Posts: 4,091
QuoteOriginally posted by jeans Quote
Of course I did already look at the front of the lens, which says 50mm. I just wasn't sure that automatically meant thread size. Can this be confirmed?
Sorry about that. I know that the filter size is 49mm on my lens and I thought I remembered seeing the filter size on the front of the lens. Can't trust my memory any more.

I do have a 49mm to 52mm step up ring, so that any filter I buy for my kit lens will fit my M50.

Tim
01-26-2010, 01:13 PM   #26
New Member




Join Date: Dec 2009
Posts: 24
Original Poster
QuoteOriginally posted by GerryL Quote
I tried this once and it actually worked.
I just tried it for the kick of it and was surprised that it worked.
I had a Canon S3 IS before and played with the additional lens you can attach to these P&S since they have fixed lenses, because of this I bought a Raynox DCR-730 which was a wide converter (0.7x).
Raynox makes good glass so the image I got still seemed good and didn't deteriorate.
You might know Raynox as making the well known macro conversion lenses DCR-150 and DCR-250.
Here it is: DCR-730 Wideangle conversion lens 0.7X for Digital camera and High Definition camera
If you want to toy around with it, this is the lens to consider.
The 18mm kit (widest end) won't work with this though as it catches the edges of the kit lens and causes vignetting.
Thanks for the suggestion, I'll look into it. Even if I decided to spend the $400 on the Sigma 30mm f/1.4 EX DC HSM, I've read a lot of mixed impressions, so I don't know that I'd be getting much if any better image anyway. For the price, I'm thinking a converter lens is worth an experiment. I'm certainly no purist. Thanks also for the comparison shots.
01-26-2010, 01:23 PM   #27
graphicgr8s
Guest




QuoteOriginally posted by Gooshin Quote
This is what Wheatfield meant by "there is no crop factor"

You purchased a cheap camera which is cheap by virtue of its design. There are limitations with which you are going to have to live with.

If a 500 dollar lens is expensive for you, forgive me, but you have chosen the wrong hobby.

PS, i'm too good looking to pay for sex, but thanks for trying.
Serge you're out of line here. Wrong time, wrong thread for this garbage.
01-26-2010, 01:30 PM   #28
Veteran Member
keyser's Avatar

Join Date: Aug 2009
Location: Tsawwassen, BC
Posts: 376
Brilliant! I love a bit of trolling....

It's a crop factor because the sensor is smaller than the lens mount was designed for. The field of view hasn't changed, you're just not recording all of it. Yes, it's a design limitation, but also indicative of the fact that people start off in photography wanting to go longer. Only after a series of disapointing shots do they realise that going long doesn't make for good pictures.

Anyway; conversely, people don't like being told that if they won't spend $500 on a lens then they're in the wrong hobby... what kind of elitist nonsense is that? I bought an SLR (film) with a 50 f/2 lens for $5. If you can't make nice pictures with minimal equipment, THEN you're in the wrong hobby!

Ok, the guy wants the moon on a stick (a fast 50 with the FoV of a 30mm) when really, you'd be better off just walking further away from what he's shooting... still, no need to insult the guy, even if his end result will be somewhat lomographic.

Jeans: if you're going to perform sex acts for money, at least make sure you get the money up front!
01-26-2010, 01:30 PM   #29
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
QuoteOriginally posted by graphicgr8s Quote
Serge you're out of line here. Wrong time, wrong thread for this garbage.
What garbage? Am I wrong in my statements?

There is no lens in the pentax lineup that will emulate a 50mm f1.4 lens, you would need a 30-31mm F1.1ish.. Leica.. maybe..

As for elitist..

If you want to take pictures.. go ahead, he (or she?) wants niche lenses, or the effects that a niche lens would generate.. then yes, i guess its rather elitist.
01-26-2010, 01:40 PM   #30
Damn Brit
Guest




QuoteOriginally posted by jeans Quote
I mean that due to the fact that this camera does not have a full frame sensor, I am only seeing a cropped piece of the intended 50mm field of view. It's identified as 1.5x, correct? I just want a wider field of view, but with the other characteristics of my 50mm f1.4 as apposed to that of the stock lens.
Once you've had the camera for a while you'll realise that the crop factor discussion is a bit old and tired. If it doesn't get old and tired for you then you definitely need to get a FF camera.
To get a wider field of view you need a wider lens, it's as simple as that. I'm not sured what you mean characteristics of the 50mm f/1.4. If you mean the large aperture, you won't get that on a wider lens. Your only alternative is to take a few steps back to get a similar field of view as 50mm on a FF.

At the end of the day, it's only a problem if you let it be.
Reply

Bookmarks
  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
50mm, 52mm, angle, camera, crop, dslr, factor, k-x, lens, photography, size, smc, thread
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Crop factor demonstration. Stratman Troubleshooting and Beginner Help 19 06-25-2010 08:41 AM
K200D crop factor martc Troubleshooting and Beginner Help 10 02-18-2010 08:18 AM
? Crop Factor and Old Lenses twokatmew Troubleshooting and Beginner Help 3 01-30-2010 12:55 PM
Aperture x Crop Factor BBear Photographic Technique 24 07-03-2008 08:54 PM
Crop Factor Wheatfield Pentax DSLR Discussion 32 06-28-2008 01:20 AM



All times are GMT -7. The time now is 04:10 AM. | See also: NikonForums.com, CanonForums.com part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top