Go Back   Steve's Digicams Forums >

LinkBack Thread Tools Search this Thread
Old May 29, 2007, 11:56 PM   #11
Senior Member
ennacac's Avatar
Join Date: Mar 2005
Posts: 4,198

bilybianca wrote:
robar wrote:
no, roy does not have one.
Hmmm, I do remember a closer-than-close shot of a tick, :shock:,and a shot of the setup with the bellows on a tripod and the tick in a glass bowl. Was it Tom??

Yes it was me, but I don't remember what lens I used (M42) on the bellows and I was hard to use because the tick was alive and kept moving.

ennacac is offline   Reply With Quote
Old May 30, 2007, 12:39 AM   #12
Senior Member
Dal1970's Avatar
Join Date: Aug 2006
Location: Essex, UK
Posts: 1,868

This is the only decent shot I kept using the bellows.

Clover about 2-3mm in size, using a 55mm screw lens onthe M42 bellows.


Attached Images
Dal1970 is offline   Reply With Quote
Old May 30, 2007, 5:43 AM   #13
Senior Member
ejbrusselsprout's Avatar
Join Date: Feb 2006
Posts: 137


never had a bellows but use extension tubes a lot. since tubes or bellows have no glass any quality differences in the image will come from the lens you mount on them. i kind of think you lose your automatic aperture (focussing and composing with the lens wide open which then stops down to the chosen aperture) with bellows. a lot of tubes keep the auto aperture and some have the contacts for auto focus and exposure.

i'm experimenting now with a couple of m prime lenses on tubes to see if the results are better than my sigma 70-300 macro.

all the best, eric
ejbrusselsprout is offline   Reply With Quote
Old May 30, 2007, 7:44 AM   #14
Senior Member
mtngal's Avatar
Join Date: Nov 2005
Location: Frazier Park, CA
Posts: 16,177

Tom - amazing picture of the tick (yuck!), though if it were me, that tick would have been dead before I tried to take a picture of it.
mtngal is offline   Reply With Quote
Old May 30, 2007, 8:25 AM   #15
Senior Member
ennacac's Avatar
Join Date: Mar 2005
Posts: 4,198

I tried to kill some, but they looked strange, so I chased it around the dish (put DEET on the rim and it wouldn't go past it) with the belows setup.

The advantage to a bellows is it will tilt and swing unlike extension tubes for perspective issues and it is faster to change the length which is unlimited up to the total linit of the bellows.


ennacac is offline   Reply With Quote
Old May 30, 2007, 4:08 PM   #16
Senior Member
Join Date: Jun 2006
Posts: 400

I have bellows, Pentax II, with the lens that came with it, 50mm (IIRC).

The bellows are fun to use though lighting is a real challenge, there does not seem to be any obvious problems with extending even further than the length of the bellows and I have tried mine with all the extension tubes I have! It is possible to do very high magnification that way.

The depth of focus is about as thin as a gnat's pay checque which limits subjects somewhat, for example photographing a small coin while the raised parts may be in focus the rest of the coin is not, closing the aperture and long exposure may ease this?

Such critical focussing is very difficult to do in the view finder and of course the camera cannot auto focus this lens rig.

Bellows make camera copying of slides easy.

John Hill is offline   Reply With Quote
Old May 30, 2007, 4:34 PM   #17
Senior Member
baltochef920's Avatar
Join Date: Apr 2007
Posts: 188

Thank you Tom, John, Harriet, Darren, tjsnaps, & ejbrusselsprouts for the comments & information..Much appreciated!!

Thanks to Tom & Darren for posting the pics..The tick is defineatly unusual..Never seen a red one before.

Does anyone know if using shorter focal length lenses will improve the depth of field?? Say 35mm as opposed to 50mm or 100mm??

Or is the amount of extension that the bellows is set for what determines the focal length??

There are several books I'm trying to locate to read so I won't have to ask so many questions..Until then THANKS for being patient & amswering all my questions.

baltochef920 is offline   Reply With Quote

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

All times are GMT -5. The time now is 10:25 PM.